From patchwork Thu May 27 21:43:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285533 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2D473C4708E for ; Thu, 27 May 2021 21:43:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1D2C7613C9 for ; Thu, 27 May 2021 21:43:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234845AbhE0Vp3 (ORCPT ); Thu, 27 May 2021 17:45:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34060 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234696AbhE0Vp1 (ORCPT ); Thu, 27 May 2021 17:45:27 -0400 Received: from mail-lf1-x12b.google.com (mail-lf1-x12b.google.com [IPv6:2a00:1450:4864:20::12b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D4BEC061760; Thu, 27 May 2021 14:43:52 -0700 (PDT) Received: by mail-lf1-x12b.google.com with SMTP id f30so2281282lfj.1; Thu, 27 May 2021 14:43:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=zKZDR8p/L3oeefldCNHrdGkondf8D1T4dxfFGeyIb9I=; b=u6OL1Ff0LXWgtiyBjffPVwjho3f8AMZUy+BulZSek4Te3FnnESR58Rte83b31wcIVM 2DhVn1TvDyXu/Wj6HYaaaWGyjCHfHzCgX/T+H3bIhtxVaCq7zBFZo3BQVc9xrekUqfin oREH3wrvfL0wG/L0OfOkJQT0fgo0UN+MAGSIcac4t1bMQEkNgkRCVmJgsgxoGBjVhktb G/dbzT80NEKLVenGSgN9YL6LBukjy4dYBS1ydHb0uBUhAyOiErQMnib4eymdK/skbNMI P+22K3ebIJ++PWWCXTAmr66eJB9PI2xxYOuXNVpfoIk8b6Ckk5sC/Vca3BQwNNb2OQwe B07w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=zKZDR8p/L3oeefldCNHrdGkondf8D1T4dxfFGeyIb9I=; b=dNhzmQIOWXCulz/jcXXbpO8wnXzknn7ph5X3mCUGy/YpK9orBEqxR56vBLjrnwEo9q xN7x1UyPHIXYfPxN1VAHcgxkeiSpaPViFLDHVdGYIUhi+dQQC8ElYrgOxJHd7UtRqrxh 5VDi5p1D6Cq6t6s87O10R5iil5A+qXW2M9FZUQINcIVkikp0vlehbCfDjGYWHKJflpHs OGoWli04btbRaN0OCCZ+SuzFsvD1VBBRG7x1Ettnaq6dFsNnuVX01seBUQF/vlaOdHez gnTw3pKO7V/U1Ux7DeTYwwjcFNlo3VprtTenJTN8UWvNNoQDuFL2L4yi38+SHiXjHRVa /T7w== X-Gm-Message-State: AOAM530rmD7JvFKY037rZ9yoIXmg5UBlU6BgaAZAbPnTfVpKulVNvCH3 ZAIyzCzCiWqFmtqsOC/tzJBrWhagUvA= X-Google-Smtp-Source: ABdhPJw+cGDlr8DI/VTgW1R/9+NZQuJEDpg++/Q73Mo9Fq0BberyjfZkqRZJl8MTX0wGgvYoxc/oPg== X-Received: by 2002:a05:6512:220b:: with SMTP id h11mr3621511lfu.17.1622151831012; Thu, 27 May 2021 14:43:51 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.43.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:43:50 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 01/14] regulator: core: Add regulator_sync_voltage_rdev() Date: Fri, 28 May 2021 00:43:04 +0300 Message-Id: <20210527214317.31014-2-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Some NVIDIA Tegra devices use a CPU soft-reset method for the reboot and in this case we need to restore the coupled voltages to the state that is suitable for hardware during boot. Add new regulator_sync_voltage_rdev() helper which is needed by regulator drivers in order to sync voltage of a coupled regulators. Acked-by: Mark Brown Signed-off-by: Dmitry Osipenko --- drivers/regulator/core.c | 23 +++++++++++++++++++++++ include/linux/regulator/driver.h | 1 + 2 files changed, 24 insertions(+) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index e20e77e4c159..aae978c0c148 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -4111,6 +4111,29 @@ int regulator_set_voltage_time_sel(struct regulator_dev *rdev, } EXPORT_SYMBOL_GPL(regulator_set_voltage_time_sel); +int regulator_sync_voltage_rdev(struct regulator_dev *rdev) +{ + int ret; + + regulator_lock(rdev); + + if (!rdev->desc->ops->set_voltage && + !rdev->desc->ops->set_voltage_sel) { + ret = -EINVAL; + goto out; + } + + /* balance only, if regulator is coupled */ + if (rdev->coupling_desc.n_coupled > 1) + ret = regulator_balance_voltage(rdev, PM_SUSPEND_ON); + else + ret = -EOPNOTSUPP; + +out: + regulator_unlock(rdev); + return ret; +} + /** * regulator_sync_voltage - re-apply last regulator output voltage * @regulator: regulator source diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 4ea520c248e9..35e5a611db81 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -540,6 +540,7 @@ int regulator_set_current_limit_regmap(struct regulator_dev *rdev, int regulator_get_current_limit_regmap(struct regulator_dev *rdev); void *regulator_get_init_drvdata(struct regulator_init_data *reg_init_data); int regulator_set_ramp_delay_regmap(struct regulator_dev *rdev, int ramp_delay); +int regulator_sync_voltage_rdev(struct regulator_dev *rdev); /* * Helper functions intended to be used by regulator drivers prior registering From patchwork Thu May 27 21:43:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285535 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D459DC47089 for ; Thu, 27 May 2021 21:43:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B769F613F0 for ; Thu, 27 May 2021 21:43:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234903AbhE0Vpa (ORCPT ); Thu, 27 May 2021 17:45:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34066 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234877AbhE0Vp3 (ORCPT ); Thu, 27 May 2021 17:45:29 -0400 Received: from mail-lj1-x22a.google.com (mail-lj1-x22a.google.com [IPv6:2a00:1450:4864:20::22a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C35E9C061761; Thu, 27 May 2021 14:43:53 -0700 (PDT) Received: by mail-lj1-x22a.google.com with SMTP id 131so2740408ljj.3; Thu, 27 May 2021 14:43:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=i3Db6hbvHeZRlQz3yJZ5MPocVpsCmv5ymDT86VWu2zQ=; b=lrcU2pfdthHB9kZq0v+9tMJcWDvikv/NC/Qdf9whpd7b5dGWTlttBtAnosg/UTAhVO 15340n7jl5mQ2RkxSTqFoZV2rb4Sgv/BTRCAkULR57oY9rmkKzGaPumOApcZ9Uv9VLOA 8QYERFjIAN2Wb2CLSsFHuQ8uZgt97UAYsDcelA+O2J4oi66WVHXcHPojOGzbRSl7J3bE SQpGPSgix9VbgrvW7r+Y33IsnMMKsZ0lwhzO8dlCzHqhjCJuPKoPWat09+SovpfpHxRw 2xmi5dgbC+315B824IR+U68fuSI3zPwTzqcDkHFMb3I6mBl1BDdlPUf8El0Xm9ESBcUO knRw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=i3Db6hbvHeZRlQz3yJZ5MPocVpsCmv5ymDT86VWu2zQ=; b=Wcdt43SRboDUOEccyTW39jCtON5DnYa9KqwoGXZcldKlusc0a5Ts0rq5raAhsTR0oN xf+Uluo/4vhGpn/VCBEWP+QkifK5xZNRKDPPij1gQuyETXwkXEmdNJG4Y29TL7wSUX1f FWa8gH6tylLe2hnL6mlfW/PILwbMZOYiMQgWVgeU7GZG3xHrqosr0dNZeyE+wB6+z1rN 5JKyn36DefhiPLldvpKGWb7cmK/zTaF7Wx7m+gOje6WqneVlPuiBvejfAe+UkRCkXZa7 BM1fHJtqNLAtx+LFhJM6+iSF/B4zjJWAFcDsQ94mxeP/X90WZ3KRhZaCwz9xmOeD0ES5 YYmw== X-Gm-Message-State: AOAM533TQCMlA+z4XeKiVf+mpm7TMV2LOkx4Y1DBr8iMpqv11bvgfTo4 A+P2Io4SRt8tYc083MgTnD8= X-Google-Smtp-Source: ABdhPJzvUSjxtlptbjCI22B03ljquqmnP0oLXJENbmVAO6O632zjM0mspqqWoNcitrHbQLlaKFDoQA== X-Received: by 2002:a2e:bf20:: with SMTP id c32mr4109004ljr.311.1622151832156; Thu, 27 May 2021 14:43:52 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.43.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:43:51 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 02/14] soc/tegra: regulators: Bump voltages on system reboot Date: Fri, 28 May 2021 00:43:05 +0300 Message-Id: <20210527214317.31014-3-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Ensure that SoC voltages are at a level suitable for a system reboot. This is important for some devices that use CPU reset method for the rebooting. SoC CPU and core voltages now are be restored to a level that is suitable for rebooting. This patch fixes hang on reboot on Asus Transformer TF101, it was also reported as fixing some of reboot issues on Toshiba AC100. Reported-by: Nikola Milosavljević Tested-by: Nikola Milosavljević # TF101 Signed-off-by: Dmitry Osipenko --- drivers/soc/tegra/regulators-tegra20.c | 75 +++++++++++++++++++++++++- drivers/soc/tegra/regulators-tegra30.c | 75 +++++++++++++++++++++++++- 2 files changed, 148 insertions(+), 2 deletions(-) diff --git a/drivers/soc/tegra/regulators-tegra20.c b/drivers/soc/tegra/regulators-tegra20.c index 367a71a3cd10..3479be5ee494 100644 --- a/drivers/soc/tegra/regulators-tegra20.c +++ b/drivers/soc/tegra/regulators-tegra20.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -21,7 +22,10 @@ struct tegra_regulator_coupler { struct regulator_dev *core_rdev; struct regulator_dev *cpu_rdev; struct regulator_dev *rtc_rdev; - int core_min_uV; + struct notifier_block reboot_notifier; + int core_min_uV, cpu_min_uV; + bool sys_reboot_mode_req; + bool sys_reboot_mode; }; static inline struct tegra_regulator_coupler * @@ -242,6 +246,10 @@ static int tegra20_cpu_voltage_update(struct tegra_regulator_coupler *tegra, if (cpu_uV < 0) return cpu_uV; + /* store boot voltage level */ + if (!tegra->cpu_min_uV) + tegra->cpu_min_uV = cpu_uV; + /* * CPU's regulator may not have any consumers, hence the voltage * must not be changed in that case because CPU simply won't @@ -250,6 +258,10 @@ static int tegra20_cpu_voltage_update(struct tegra_regulator_coupler *tegra, if (!cpu_min_uV_consumers) cpu_min_uV = cpu_uV; + /* restore boot voltage level */ + if (tegra->sys_reboot_mode) + cpu_min_uV = max(cpu_min_uV, tegra->cpu_min_uV); + if (cpu_min_uV > cpu_uV) { err = tegra20_core_rtc_update(tegra, core_rdev, rtc_rdev, cpu_uV, cpu_min_uV); @@ -290,6 +302,8 @@ static int tegra20_regulator_balance_voltage(struct regulator_coupler *coupler, return -EINVAL; } + tegra->sys_reboot_mode = READ_ONCE(tegra->sys_reboot_mode_req); + if (rdev == cpu_rdev) return tegra20_cpu_voltage_update(tegra, cpu_rdev, core_rdev, rtc_rdev); @@ -303,6 +317,51 @@ static int tegra20_regulator_balance_voltage(struct regulator_coupler *coupler, return -EPERM; } +static int tegra20_regulator_prepare_reboot(struct tegra_regulator_coupler *tegra, + bool sys_reboot_mode) +{ + int err; + + if (!tegra->core_rdev || !tegra->rtc_rdev || !tegra->cpu_rdev) + return 0; + + WRITE_ONCE(tegra->sys_reboot_mode_req, true); + + /* + * Some devices use CPU soft-reboot method and in this case we + * should ensure that voltages are sane for the reboot by restoring + * the minimum boot levels. + */ + err = regulator_sync_voltage_rdev(tegra->cpu_rdev); + if (err) + return err; + + err = regulator_sync_voltage_rdev(tegra->core_rdev); + if (err) + return err; + + WRITE_ONCE(tegra->sys_reboot_mode_req, sys_reboot_mode); + + return 0; +} + +static int tegra20_regulator_reboot(struct notifier_block *notifier, + unsigned long event, void *cmd) +{ + struct tegra_regulator_coupler *tegra; + int ret; + + if (event != SYS_RESTART) + return NOTIFY_DONE; + + tegra = container_of(notifier, struct tegra_regulator_coupler, + reboot_notifier); + + ret = tegra20_regulator_prepare_reboot(tegra, true); + + return notifier_from_errno(ret); +} + static int tegra20_regulator_attach(struct regulator_coupler *coupler, struct regulator_dev *rdev) { @@ -335,6 +394,14 @@ static int tegra20_regulator_detach(struct regulator_coupler *coupler, { struct tegra_regulator_coupler *tegra = to_tegra_coupler(coupler); + /* + * We don't expect regulators to be decoupled during reboot, + * this may race with the reboot handler and shouldn't ever + * happen in practice. + */ + if (WARN_ON_ONCE(system_state > SYSTEM_RUNNING)) + return -EPERM; + if (tegra->core_rdev == rdev) { tegra->core_rdev = NULL; return 0; @@ -359,13 +426,19 @@ static struct tegra_regulator_coupler tegra20_coupler = { .detach_regulator = tegra20_regulator_detach, .balance_voltage = tegra20_regulator_balance_voltage, }, + .reboot_notifier.notifier_call = tegra20_regulator_reboot, }; static int __init tegra_regulator_coupler_init(void) { + int err; + if (!of_machine_is_compatible("nvidia,tegra20")) return 0; + err = register_reboot_notifier(&tegra20_coupler.reboot_notifier); + WARN_ON(err); + return regulator_coupler_register(&tegra20_coupler.coupler); } arch_initcall(tegra_regulator_coupler_init); diff --git a/drivers/soc/tegra/regulators-tegra30.c b/drivers/soc/tegra/regulators-tegra30.c index 0e776b20f625..18fe53d0a870 100644 --- a/drivers/soc/tegra/regulators-tegra30.c +++ b/drivers/soc/tegra/regulators-tegra30.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -22,7 +23,10 @@ struct tegra_regulator_coupler { struct regulator_coupler coupler; struct regulator_dev *core_rdev; struct regulator_dev *cpu_rdev; - int core_min_uV; + struct notifier_block reboot_notifier; + int core_min_uV, cpu_min_uV; + bool sys_reboot_mode_req; + bool sys_reboot_mode; }; static inline struct tegra_regulator_coupler * @@ -172,6 +176,10 @@ static int tegra30_voltage_update(struct tegra_regulator_coupler *tegra, if (cpu_uV < 0) return cpu_uV; + /* store boot voltage level */ + if (!tegra->cpu_min_uV) + tegra->cpu_min_uV = cpu_uV; + /* * CPU's regulator may not have any consumers, hence the voltage * must not be changed in that case because CPU simply won't @@ -195,6 +203,10 @@ static int tegra30_voltage_update(struct tegra_regulator_coupler *tegra, if (err) return err; + /* restore boot voltage level */ + if (tegra->sys_reboot_mode) + cpu_min_uV = max(cpu_min_uV, tegra->cpu_min_uV); + if (core_min_limited_uV > core_uV) { pr_err("core voltage constraint violated: %d %d %d\n", core_uV, core_min_limited_uV, cpu_uV); @@ -263,9 +275,56 @@ static int tegra30_regulator_balance_voltage(struct regulator_coupler *coupler, return -EINVAL; } + tegra->sys_reboot_mode = READ_ONCE(tegra->sys_reboot_mode_req); + return tegra30_voltage_update(tegra, cpu_rdev, core_rdev); } +static int tegra30_regulator_prepare_reboot(struct tegra_regulator_coupler *tegra, + bool sys_reboot_mode) +{ + int err; + + if (!tegra->core_rdev || !tegra->cpu_rdev) + return 0; + + WRITE_ONCE(tegra->sys_reboot_mode_req, true); + + /* + * Some devices use CPU soft-reboot method and in this case we + * should ensure that voltages are sane for the reboot by restoring + * the minimum boot levels. + */ + err = regulator_sync_voltage_rdev(tegra->cpu_rdev); + if (err) + return err; + + err = regulator_sync_voltage_rdev(tegra->core_rdev); + if (err) + return err; + + WRITE_ONCE(tegra->sys_reboot_mode_req, sys_reboot_mode); + + return 0; +} + +static int tegra30_regulator_reboot(struct notifier_block *notifier, + unsigned long event, void *cmd) +{ + struct tegra_regulator_coupler *tegra; + int ret; + + if (event != SYS_RESTART) + return NOTIFY_DONE; + + tegra = container_of(notifier, struct tegra_regulator_coupler, + reboot_notifier); + + ret = tegra30_regulator_prepare_reboot(tegra, true); + + return notifier_from_errno(ret); +} + static int tegra30_regulator_attach(struct regulator_coupler *coupler, struct regulator_dev *rdev) { @@ -292,6 +351,14 @@ static int tegra30_regulator_detach(struct regulator_coupler *coupler, { struct tegra_regulator_coupler *tegra = to_tegra_coupler(coupler); + /* + * We don't expect regulators to be decoupled during reboot, + * this may race with the reboot handler and shouldn't ever + * happen in practice. + */ + if (WARN_ON_ONCE(system_state > SYSTEM_RUNNING)) + return -EPERM; + if (tegra->core_rdev == rdev) { tegra->core_rdev = NULL; return 0; @@ -311,13 +378,19 @@ static struct tegra_regulator_coupler tegra30_coupler = { .detach_regulator = tegra30_regulator_detach, .balance_voltage = tegra30_regulator_balance_voltage, }, + .reboot_notifier.notifier_call = tegra30_regulator_reboot, }; static int __init tegra_regulator_coupler_init(void) { + int err; + if (!of_machine_is_compatible("nvidia,tegra30")) return 0; + err = register_reboot_notifier(&tegra30_coupler.reboot_notifier); + WARN_ON(err); + return regulator_coupler_register(&tegra30_coupler.coupler); } arch_initcall(tegra_regulator_coupler_init); From patchwork Thu May 27 21:43:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285559 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D725C4708B for ; Thu, 27 May 2021 21:45:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5D81F613D4 for ; Thu, 27 May 2021 21:45:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236045AbhE0Vqs (ORCPT ); Thu, 27 May 2021 17:46:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34068 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234798AbhE0Vp2 (ORCPT ); Thu, 27 May 2021 17:45:28 -0400 Received: from mail-lj1-x230.google.com (mail-lj1-x230.google.com [IPv6:2a00:1450:4864:20::230]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E3EB9C061574; Thu, 27 May 2021 14:43:54 -0700 (PDT) Received: by mail-lj1-x230.google.com with SMTP id t17so2704103ljd.9; Thu, 27 May 2021 14:43:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=PZ7rCy2VE/t2KfttY6Z1tGootvL+h1fkg+mpjvNoBrY=; b=IeJKbId95K3iK17owixOY6kalvvBBzL4PEPRprUHFRyWbRjX0aT0nu/lkbbJJ2Pfel z14Ktt62JnhGWxW8BN6SN3951qZORfqqr63fqYM/wli6iyYHuQxQjHPMIqNiZUfIH0K8 4hBRaTXPLAIvP8szOiTPpYSllRNCmQN0gavhBoTrSOU/wsiI+VNJKc5mY3O4D7GTwrDM 4oPE4cOOI9OIWXHr4HqqOSonfWh+0MXOQXiM38aIKi4/7DI6MysjQc+gmD/Svv5ID1xh icsbSZZFw+YvuhHEZLWbsnJ04/DpqwKJy50541NtgbX2fKBfxqhgE01bqjboeMhFET0h pLfg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=PZ7rCy2VE/t2KfttY6Z1tGootvL+h1fkg+mpjvNoBrY=; b=MUdDiwivdkBsHsu+I1HSyHCfzjZhcM4kl4S9Nvbx8UIip2/0EGoQYsaVNm7PEzLEua VGx3KXYg9QlImRjMpOYjPCfVahBur2pIAGqKORpb8pjWyk5FKXnenWe55gHbBJbCNtmQ Y0ASG/wq6emO1WnCpbOYAy+JwiNObqFD7r5cjaHD+KJB5RwOAnFlimwo/H2z+Z+lbAKb WK4vPI9ljSKTbp6miiIM7wsc1R5TvtkVji7SeAU/Bh0cJh9oiFOK7GJNZhX1qqSGApCq v/cn8BkzFU6qh5+Hl1dgRLG9mWeDKPRcKtADyr/Cn+E6V6v29mTmwNZC1bJQf8TfXIGM Ejuw== X-Gm-Message-State: AOAM533RqE3YVSQptwewbD4NiMvA4yHDH/30dB4cXh3M6A+U5/tS+so8 FqgRZOULFcmK0Y6uqxbb6PU= X-Google-Smtp-Source: ABdhPJz1ay4qkLtz1wNyNXpgOskEjyw6OXgWZ39qRNHBlWbB5fzuPMVTtfpz2jZLaHVoTx404NsXuA== X-Received: by 2002:a2e:8746:: with SMTP id q6mr4149087ljj.416.1622151833296; Thu, 27 May 2021 14:43:53 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.43.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:43:52 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 03/14] soc/tegra: Add stub for soc_is_tegra() Date: Fri, 28 May 2021 00:43:06 +0300 Message-Id: <20210527214317.31014-4-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Add stub required for compile-testing of drivers. Signed-off-by: Dmitry Osipenko --- include/soc/tegra/common.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/soc/tegra/common.h b/include/soc/tegra/common.h index 98027a76ce3d..744280ecab5f 100644 --- a/include/soc/tegra/common.h +++ b/include/soc/tegra/common.h @@ -6,6 +6,15 @@ #ifndef __SOC_TEGRA_COMMON_H__ #define __SOC_TEGRA_COMMON_H__ +#include + +#ifdef CONFIG_ARCH_TEGRA bool soc_is_tegra(void); +#else +static inline bool soc_is_tegra(void) +{ + return false; +} +#endif #endif /* __SOC_TEGRA_COMMON_H__ */ From patchwork Thu May 27 21:43:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285537 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7C66C4708A for ; Thu, 27 May 2021 21:44:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A9E2061417 for ; Thu, 27 May 2021 21:44:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235018AbhE0Vpc (ORCPT ); Thu, 27 May 2021 17:45:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34076 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235056AbhE0Vpb (ORCPT ); Thu, 27 May 2021 17:45:31 -0400 Received: from mail-lf1-x132.google.com (mail-lf1-x132.google.com [IPv6:2a00:1450:4864:20::132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5095EC061574; Thu, 27 May 2021 14:43:56 -0700 (PDT) Received: by mail-lf1-x132.google.com with SMTP id q7so2234918lfr.6; Thu, 27 May 2021 14:43:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=+ru1Y5AhCOlhA7q2BKIbg+3l43tX1d5MlWRnc4jqFnM=; b=nK9BVMLSaqCDQunmaVeMy6PHy8kHZH2IAP0wTQMwakffWH5eUByU5FEUhxUg4Np6Ke FWduUJ5xFfYNNYcfcmq2zPonwlxlZcW+bYdgVWprjw0LmpptgmB2eb+XjbUwz6kzqSO9 qAwR/QQPDdVryGDwU6210dOHc3tVBMv+OhYgbvF2unH6SStzciHDi2PrrzYhHyoAiTGi kgOFcG2dF0RFbgzjrFUgJVr652sI3Bkv+o1PGZ6r7z3Mj/Cz1zYdr/rQ7crFVgUy0003 r37eT+2rdJD1BN5M24LPyv+XXFTrBMvsLcvaA7Jw+NsIrd/xd+A00KbGOcAD2KvMhNdi agFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=+ru1Y5AhCOlhA7q2BKIbg+3l43tX1d5MlWRnc4jqFnM=; b=uKJ4BkKbOUmMyR7ALjecxEZ56Clq17NZ5TMWMq0LkS3EpngkOpaW8S9Q4d3NaE/dXD I8chsY5FNLb/hvtgdZ3cmMenOyZoD9EZVi9a6bViYKGI/G5KZXBhP/40QXskFNIkC6p/ ObbwW4pC7HGCrFG8A4rBCoRWxYI/41iq3V7PAejVYbi/3AZpX5e8LlctBORMXbnrASqm dOyq5VBcBNm4shWk8svkg/A+55hDEeD4EHUmhBjR0ZxctturTOZ4egwlFVjCq3enf3g1 KrvEN5IsUAGaJSUixc5UHALSHGBDu5ogPws8yR1w6Z/R7n0jnR4h/WqSGGg4gt3o7W2T DcwA== X-Gm-Message-State: AOAM533+kElSuLXI6r5FvFJXTdXSKCXZry+cFpdk1oV+tId6n1drxOz5 6uqbUws5ofmyRNVM8WXJJM+qbKaKk7s= X-Google-Smtp-Source: ABdhPJwN+lEEu5kkXY//Xb+4j2MnkzOuZUxQWxFMLTaUpik13EYpaz/bB9JGIM1C/8OihGJDDWudbQ== X-Received: by 2002:a05:6512:23a1:: with SMTP id c33mr3670782lfv.498.1622151834688; Thu, 27 May 2021 14:43:54 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.43.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:43:54 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 04/14] soc/tegra: Add devm_tegra_core_dev_init_opp_table() Date: Fri, 28 May 2021 00:43:07 +0300 Message-Id: <20210527214317.31014-5-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Add common helper which initializes OPP table for Tegra SoC core devices. Tested-by: Peter Geis # Ouya T30 Tested-by: Paul Fertser # PAZ00 T20 Tested-by: Nicolas Chauvet # PAZ00 T20 and TK1 T124 Tested-by: Matt Merhar # Ouya T30 Signed-off-by: Dmitry Osipenko --- drivers/soc/tegra/common.c | 97 ++++++++++++++++++++++++++++++++++++++ include/soc/tegra/common.h | 22 +++++++++ 2 files changed, 119 insertions(+) diff --git a/drivers/soc/tegra/common.c b/drivers/soc/tegra/common.c index 3dc54f59cafe..cd33e99249c3 100644 --- a/drivers/soc/tegra/common.c +++ b/drivers/soc/tegra/common.c @@ -3,9 +3,16 @@ * Copyright (C) 2014 NVIDIA CORPORATION. All rights reserved. */ +#define dev_fmt(fmt) "tegra-soc: " fmt + +#include +#include +#include #include +#include #include +#include static const struct of_device_id tegra_machine_match[] = { { .compatible = "nvidia,tegra20", }, @@ -31,3 +38,93 @@ bool soc_is_tegra(void) return match != NULL; } + +static int tegra_core_dev_init_opp_state(struct device *dev) +{ + unsigned long rate; + struct clk *clk; + int err; + + clk = devm_clk_get(dev, NULL); + if (IS_ERR(clk)) { + dev_err(dev, "failed to get clk: %pe\n", clk); + return PTR_ERR(clk); + } + + rate = clk_get_rate(clk); + if (!rate) { + dev_err(dev, "failed to get clk rate\n"); + return -EINVAL; + } + + /* first dummy rate-setting initializes voltage vote */ + err = dev_pm_opp_set_rate(dev, rate); + if (err) { + dev_err(dev, "failed to initialize OPP clock: %d\n", err); + return err; + } + + return 0; +} + +/** + * devm_tegra_core_dev_init_opp_table() - initialize OPP table + * @dev: device for which OPP table is initialized + * @params: pointer to the OPP table configuration + * + * This function will initialize OPP table and sync OPP state of a Tegra SoC + * core device. + * + * Return: 0 on success or errorno. + */ +int devm_tegra_core_dev_init_opp_table(struct device *dev, + struct tegra_core_opp_params *params) +{ + u32 hw_version; + int err; + + err = devm_pm_opp_set_clkname(dev, NULL); + if (err) { + dev_err(dev, "failed to set OPP clk: %d\n", err); + return err; + } + + /* Tegra114+ doesn't support OPP yet */ + if (!of_machine_is_compatible("nvidia,tegra20") && + !of_machine_is_compatible("nvidia,tegra30")) + return -ENODEV; + + if (of_machine_is_compatible("nvidia,tegra20")) + hw_version = BIT(tegra_sku_info.soc_process_id); + else + hw_version = BIT(tegra_sku_info.soc_speedo_id); + + err = devm_pm_opp_set_supported_hw(dev, &hw_version, 1); + if (err) { + dev_err(dev, "failed to set OPP supported HW: %d\n", err); + return err; + } + + /* + * Older device-trees have an empty OPP table, we will get + * -ENODEV from devm_pm_opp_of_add_table() in this case. + */ + err = devm_pm_opp_of_add_table(dev); + if (err) { + if (err == -ENODEV) + dev_err_once(dev, "OPP table not found, please update device-tree\n"); + else + dev_err(dev, "failed to add OPP table: %d\n", err); + + return err; + } + + if (params->init_state) { + err = tegra_core_dev_init_opp_state(dev); + if (err) + return err; + } + + return 0; +} +EXPORT_SYMBOL_GPL(devm_tegra_core_dev_init_opp_table); diff --git a/include/soc/tegra/common.h b/include/soc/tegra/common.h index 744280ecab5f..af41ad80ec21 100644 --- a/include/soc/tegra/common.h +++ b/include/soc/tegra/common.h @@ -6,15 +6,37 @@ #ifndef __SOC_TEGRA_COMMON_H__ #define __SOC_TEGRA_COMMON_H__ +#include #include +struct device; + +/** + * Tegra SoC core device OPP table configuration + * + * @init_state: pre-initialize OPP state of a device + */ +struct tegra_core_opp_params { + bool init_state; +}; + #ifdef CONFIG_ARCH_TEGRA bool soc_is_tegra(void); + +int devm_tegra_core_dev_init_opp_table(struct device *dev, + struct tegra_core_opp_params *params); #else static inline bool soc_is_tegra(void) { return false; } + +static inline int +devm_tegra_core_dev_init_opp_table(struct device *dev, + struct tegra_core_opp_params *params) +{ + return -ENODEV; +} #endif #endif /* __SOC_TEGRA_COMMON_H__ */ From patchwork Thu May 27 21:43:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285539 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 11D0DC4707F for ; Thu, 27 May 2021 21:44:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EA991613E5 for ; Thu, 27 May 2021 21:44:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235494AbhE0Vph (ORCPT ); Thu, 27 May 2021 17:45:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34082 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235091AbhE0Vpc (ORCPT ); Thu, 27 May 2021 17:45:32 -0400 Received: from mail-lf1-x132.google.com (mail-lf1-x132.google.com [IPv6:2a00:1450:4864:20::132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 57726C061760; Thu, 27 May 2021 14:43:57 -0700 (PDT) Received: by mail-lf1-x132.google.com with SMTP id e17so2279564lfb.2; Thu, 27 May 2021 14:43:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=HXT+IvjVluiKH3yhs5geuypz9CaKXis2aNZdKmGa0hs=; b=rUPMSMjLT+W0Mc7O4aPFQ9QWkBu43ZHfgZC7wWkB40kkC5u7rwm//A8izBgEmYafhR Ad0j/uMg0Z8laKg9A/IZ0BCSA59KXV2XhurMdKHBujrKfGd9sQTY8RmL53NnT99sI3TX ox8TCnXc+lc/qzzcrNR1pqeySEwX/+LfftV0vNpmw7PnZ3SLX0GrvNGpggRuI49CM8Go 62OAy26SYrfuL+Nfpqz3nUwoAwLR20Lc6VutgSlZAFzei2fm2tw0TQ5g0isS7wGPiosn KoFf275KXbUi+p0z+GGtQdspEurOLi9PUAtpS6bXgX3NdlK6fTfwLsQoBQNkyE/VV/LI CMUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=HXT+IvjVluiKH3yhs5geuypz9CaKXis2aNZdKmGa0hs=; b=mwJtDYo12QpXQDY1jt2F9s/I2oEg7JOpGP1sM76+hsRb0jHeB/UecUPjlqJ09dGaLs u1e09tmfMtfOvtrFSoUx7H4As7oA+Jt2ZU7B+1K95m4lFnXPzX9coqxbkYb5Gdc8VQbw 9XrUGMjHsv+Hyuh4qHTvUH+ijnWKja1YvF3q38Z2HFElfCp9dMhc81csCHrVVSGqwBvX 9n9zAcPUHtxT7ZIK6fGN/0DEcYgAftiVs4ES0UPZpEF1gdSPV2HpOL7MVty6k0S/dful NNgs4HfJm64AGnJJOgu/aMVhz2IcbgPUQZps0dbMhG/FObOgnTjhqINxMXisjjYF8V9I In5A== X-Gm-Message-State: AOAM533PF3omEd4VaaZxHqSrC9wJypsC7ccUwu/GqkqoDNEU8dWVG89e /OHR+/+vFYzDC1JEw8a63tk= X-Google-Smtp-Source: ABdhPJwjaJvFWwpBeniphHGbx3yI8Vch5sKL5VAUur4FGX4lR6pIoX1U6TJYoX+TVxBJDD1rtD1kCw== X-Received: by 2002:a05:6512:2295:: with SMTP id f21mr3566723lfu.524.1622151835702; Thu, 27 May 2021 14:43:55 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.43.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:43:55 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 05/14] soc/tegra: fuse: Add stubs needed for compile-testing Date: Fri, 28 May 2021 00:43:08 +0300 Message-Id: <20210527214317.31014-6-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Add missing stubs that will allow Tegra memory driver to be compile-tested by kernel build bots. Signed-off-by: Dmitry Osipenko --- include/soc/tegra/fuse.h | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) diff --git a/include/soc/tegra/fuse.h b/include/soc/tegra/fuse.h index 78cbc787a4dc..990701f788bc 100644 --- a/include/soc/tegra/fuse.h +++ b/include/soc/tegra/fuse.h @@ -52,14 +52,28 @@ struct tegra_sku_info { enum tegra_revision revision; }; +#ifdef CONFIG_ARCH_TEGRA +extern struct tegra_sku_info tegra_sku_info; u32 tegra_read_straps(void); u32 tegra_read_ram_code(void); int tegra_fuse_readl(unsigned long offset, u32 *value); - -#ifdef CONFIG_ARCH_TEGRA -extern struct tegra_sku_info tegra_sku_info; #else static struct tegra_sku_info tegra_sku_info __maybe_unused; + +static inline u32 tegra_read_straps(void) +{ + return 0; +} + +static inline u32 tegra_read_ram_code(void) +{ + return 0; +} + +static inline int tegra_fuse_readl(unsigned long offset, u32 *value) +{ + return -ENODEV; +} #endif struct device *tegra_soc_device_register(void); From patchwork Thu May 27 21:43:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285541 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 708C2C4708D for ; Thu, 27 May 2021 21:44:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5C920613F0 for ; Thu, 27 May 2021 21:44:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235529AbhE0Vpi (ORCPT ); Thu, 27 May 2021 17:45:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34092 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235106AbhE0Vpd (ORCPT ); Thu, 27 May 2021 17:45:33 -0400 Received: from mail-lj1-x22b.google.com (mail-lj1-x22b.google.com [IPv6:2a00:1450:4864:20::22b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63D94C061574; Thu, 27 May 2021 14:43:58 -0700 (PDT) Received: by mail-lj1-x22b.google.com with SMTP id f12so2744820ljp.2; Thu, 27 May 2021 14:43:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Hh0E0lNRUm1mrVubbzi0uRUQqD90YPh9J/68C68CTo4=; b=tASIXFyXaDCeMIO4ddGAWBmvP+rds3oBoNUROaxcPy5Fxq4yXmHHE1yB2xECmAEoum 9zQLWIxwTZVaHoddNL89BzoEzij+lFdH7N6M0td4GP9zSk/fk8ke0aD5cM0bNG0CBJJH YJTkzJFVlWwIfxzP67YeKMo+6lrNQrQ6jVdx5D3rk+E41Cr4CbaJly916NoNv53NdztT kbj61xqYdxcQFZcfEYykjL63XMUEK2zOKnUnnl1uQVo3oQAkX47Gcm0LQFHWMSngnL2u pjtXIQWeFVztinrPNEeaem5YMSHz8btjG2spC/nCZAkQPLwlUXPDpu9UbGOCLKlmV2bc pQWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Hh0E0lNRUm1mrVubbzi0uRUQqD90YPh9J/68C68CTo4=; b=l73FRe3gjtLayIFQbsL+Za8XnCu70pKVK+mBu6WScT8N5ChBT3s4xA6Brm/uv++asn LkggrDRNY1ksqzGbrMoAKppQPRfsSUPuYHrIrYYX/33xTI7SIH/VvQIHoTMbnWye4hL9 VrX/ZuWqvZfHLR874ooZiH2LCi1ms+Rcs7dDcRqCj5zPWFsFxngCHfvtDMOiJeicTpcR hfXXowZbeW/Zk1/m70flLaKrXq2d60gdwpwpBgvvqTYJNoEkdCyOQb+QZzvhgG9bZbLI zQKZyXSWkfB8W3ftWUoZGDONu11WyhMcQE1cNdClAR7ae72iu2R9JHidSHV0sqNx58kM lpSQ== X-Gm-Message-State: AOAM533yUewehz+5Y5P+gw6Vm+resi3BKF2jRtSWUFgnbFVCoDxx52fT YCThweklomxQgN81W/Jl8KM= X-Google-Smtp-Source: ABdhPJwM2v2Mzl5LZqO4KIJ438Dt2O4ZQcOKGkfmLB6drauwY2cCHmnc/2OgosEOpw0cvwtkwvC2ZQ== X-Received: by 2002:a2e:b161:: with SMTP id a1mr4131874ljm.426.1622151836687; Thu, 27 May 2021 14:43:56 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.43.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:43:56 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 06/14] clk: tegra: Add stubs needed for compile-testing Date: Fri, 28 May 2021 00:43:09 +0300 Message-Id: <20210527214317.31014-7-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Add stubs needed for compile-testing of Tegra memory drivers. Signed-off-by: Dmitry Osipenko --- include/linux/clk/tegra.h | 96 ++++++++++++++++++++++++++++++--------- 1 file changed, 75 insertions(+), 21 deletions(-) diff --git a/include/linux/clk/tegra.h b/include/linux/clk/tegra.h index f7ff722a03dd..5667fe7a979c 100644 --- a/include/linux/clk/tegra.h +++ b/include/linux/clk/tegra.h @@ -123,20 +123,6 @@ static inline void tegra_cpu_clock_resume(void) } #endif -extern int tegra210_plle_hw_sequence_start(void); -extern bool tegra210_plle_hw_sequence_is_enabled(void); -extern void tegra210_xusb_pll_hw_control_enable(void); -extern void tegra210_xusb_pll_hw_sequence_start(void); -extern void tegra210_sata_pll_hw_control_enable(void); -extern void tegra210_sata_pll_hw_sequence_start(void); -extern void tegra210_set_sata_pll_seq_sw(bool state); -extern void tegra210_put_utmipll_in_iddq(void); -extern void tegra210_put_utmipll_out_iddq(void); -extern int tegra210_clk_handle_mbist_war(unsigned int id); -extern void tegra210_clk_emc_dll_enable(bool flag); -extern void tegra210_clk_emc_dll_update_setting(u32 emc_dll_src_value); -extern void tegra210_clk_emc_update_setting(u32 emc_src_value); - struct clk; struct tegra_emc; @@ -144,17 +130,10 @@ typedef long (tegra20_clk_emc_round_cb)(unsigned long rate, unsigned long min_rate, unsigned long max_rate, void *arg); - -void tegra20_clk_set_emc_round_callback(tegra20_clk_emc_round_cb *round_cb, - void *cb_arg); -int tegra20_clk_prepare_emc_mc_same_freq(struct clk *emc_clk, bool same); - typedef int (tegra124_emc_prepare_timing_change_cb)(struct tegra_emc *emc, unsigned long rate); typedef void (tegra124_emc_complete_timing_change_cb)(struct tegra_emc *emc, unsigned long rate); -void tegra124_clk_set_emc_callbacks(tegra124_emc_prepare_timing_change_cb *prep_cb, - tegra124_emc_complete_timing_change_cb *complete_cb); struct tegra210_clk_emc_config { unsigned long rate; @@ -176,8 +155,83 @@ struct tegra210_clk_emc_provider { const struct tegra210_clk_emc_config *config); }; +#ifdef CONFIG_ARCH_TEGRA +void tegra20_clk_set_emc_round_callback(tegra20_clk_emc_round_cb *round_cb, + void *cb_arg); +int tegra20_clk_prepare_emc_mc_same_freq(struct clk *emc_clk, bool same); + +void tegra124_clk_set_emc_callbacks(tegra124_emc_prepare_timing_change_cb *prep_cb, + tegra124_emc_complete_timing_change_cb *complete_cb); + +int tegra210_plle_hw_sequence_start(void); +bool tegra210_plle_hw_sequence_is_enabled(void); +void tegra210_xusb_pll_hw_control_enable(void); +void tegra210_xusb_pll_hw_sequence_start(void); +void tegra210_sata_pll_hw_control_enable(void); +void tegra210_sata_pll_hw_sequence_start(void); +void tegra210_set_sata_pll_seq_sw(bool state); +void tegra210_put_utmipll_in_iddq(void); +void tegra210_put_utmipll_out_iddq(void); +int tegra210_clk_handle_mbist_war(unsigned int id); +void tegra210_clk_emc_dll_enable(bool flag); +void tegra210_clk_emc_dll_update_setting(u32 emc_dll_src_value); +void tegra210_clk_emc_update_setting(u32 emc_src_value); + int tegra210_clk_emc_attach(struct clk *clk, struct tegra210_clk_emc_provider *provider); void tegra210_clk_emc_detach(struct clk *clk); +#else +static inline void +tegra20_clk_set_emc_round_callback(tegra20_clk_emc_round_cb *round_cb, + void *cb_arg) +{ +} + +static inline int +tegra20_clk_prepare_emc_mc_same_freq(struct clk *emc_clk, bool same) +{ + return 0; +} + +static inline void +tegra124_clk_set_emc_callbacks(tegra124_emc_prepare_timing_change_cb *prep_cb, + tegra124_emc_complete_timing_change_cb *complete_cb) +{ +} + +static inline int tegra210_plle_hw_sequence_start(void) +{ + return 0; +} + +static inline bool tegra210_plle_hw_sequence_is_enabled(void) +{ + return false; +} + +static inline int tegra210_clk_handle_mbist_war(unsigned int id) +{ + return 0; +} + +static inline int +tegra210_clk_emc_attach(struct clk *clk, + struct tegra210_clk_emc_provider *provider); +{ + return 0; +} + +static inline void tegra210_xusb_pll_hw_control_enable(void) {} +static inline void tegra210_xusb_pll_hw_sequence_start(void) {} +static inline void tegra210_sata_pll_hw_control_enable(void) {} +static inline void tegra210_sata_pll_hw_sequence_start(void) {} +static inline void tegra210_set_sata_pll_seq_sw(bool state) {} +static inline void tegra210_put_utmipll_in_iddq(void) {} +static inline void tegra210_put_utmipll_out_iddq(void) {} +static inline void tegra210_clk_emc_dll_enable(bool flag) {} +static inline void tegra210_clk_emc_dll_update_setting(u32 emc_dll_src_value) {} +static inline void tegra210_clk_emc_update_setting(u32 emc_src_value) {} +static inline void tegra210_clk_emc_detach(struct clk *clk) {} +#endif #endif /* __LINUX_CLK_TEGRA_H_ */ From patchwork Thu May 27 21:43:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285545 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 046BEC4708E for ; Thu, 27 May 2021 21:44:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D9578613D4 for ; Thu, 27 May 2021 21:44:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236018AbhE0Vpo (ORCPT ); Thu, 27 May 2021 17:45:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34102 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235193AbhE0Vpf (ORCPT ); Thu, 27 May 2021 17:45:35 -0400 Received: from mail-lf1-x12f.google.com (mail-lf1-x12f.google.com [IPv6:2a00:1450:4864:20::12f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7110BC0613CE; Thu, 27 May 2021 14:43:59 -0700 (PDT) Received: by mail-lf1-x12f.google.com with SMTP id f30so2281695lfj.1; Thu, 27 May 2021 14:43:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=PnHT/nk8CJodgkwuBSRTekimstD88D/By8a3gAk3kxw=; b=UvAFDXd9ZhY5H5Qe2SorzXqtsMKT7W8IWcpABGT7kN0kOSrqn0hnfOywyzzdF/5dIC jfCM/qF9WtOkERpUUU/URO/lGzjf29oxT61cfsn5zSZxKeRbSoeooIynAkmybiSi93ty t0s5Pdekqd/sbk5sRPA+NQLX/L2QRbJvhKIl/eYlaJDdmkRwdotVCzjZaamWZ4Delaai sDcjpnqTQohwNKNImQ0GtvGASqdI6wLyj426CXdcQ2NTWNrCDxvxu5PFfznz1AkVvK5H 57iHwJ+EnhBWH+s//jcMVMa6mLl3bW2JOSDUJELpoBb1CacxuDkbhA7PP0AwhQlz8gUR GmLw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=PnHT/nk8CJodgkwuBSRTekimstD88D/By8a3gAk3kxw=; b=VjFnbs4/soII4Bx4zCY+VzjS8aE0t37t67gaQfm6L+kdVK+BrJaWelWaKvAi1Wc0tz GNZx22UiK0QyC0oFFZyKSF7XIM4qZWjFx3jXJ9tRc7qCgKkA4OQyLUArYgSJXgBEvh3Q acBzfDsOZ0GMMpNJY4b7kASPCku2td7B1q8zJIlMcFvDNVDzUb4LzMu8vr8oXlmJwF0C bF/nGayOUeHsgWarObAZ3jeloJGrqtqGaWUW+FbcxwVs+yYv1FbPtJwJ3kO+pdLp1KZ6 SS0OTw5N+QFWVk2c8j+MoAQg8d8+/h5ntbCKBVi9Pw8ZoUmkUo2XFEPTFMNdi4/Oo1Fl Utdg== X-Gm-Message-State: AOAM532P3HeG/3DxhqVJWIOY0ylJeTDSo9q/ww+BXq8H/LBDFvDoj1fB xF3zscR90CT3Yaf7gn75zPo= X-Google-Smtp-Source: ABdhPJy5GkP3F1HXH3SDY5dJLOmOHXkyM1oICtkpsLFoDAOVoOlhJiVL9lgrhtoSTX2C92/Kqo7LXA== X-Received: by 2002:ac2:4281:: with SMTP id m1mr3505892lfh.164.1622151837830; Thu, 27 May 2021 14:43:57 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.43.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:43:57 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 07/14] memory: tegra: Fix compilation warnings on 64bit platforms Date: Fri, 28 May 2021 00:43:10 +0300 Message-Id: <20210527214317.31014-8-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Fix compilation warning on 64bit platforms caused by implicit promotion of 32bit signed integer to a 64bit unsigned value which happens after enabling compile-testing of the EMC drivers. Reported-by: kernel test robot Reviewed-by: Nathan Chancellor Reviewed-by: Krzysztof Kozlowski Signed-off-by: Dmitry Osipenko --- drivers/memory/tegra/tegra124-emc.c | 4 ++-- drivers/memory/tegra/tegra30-emc.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/memory/tegra/tegra124-emc.c b/drivers/memory/tegra/tegra124-emc.c index 5699d909abc2..a21ca8e0841a 100644 --- a/drivers/memory/tegra/tegra124-emc.c +++ b/drivers/memory/tegra/tegra124-emc.c @@ -272,8 +272,8 @@ #define EMC_PUTERM_ADJ 0x574 #define DRAM_DEV_SEL_ALL 0 -#define DRAM_DEV_SEL_0 (2 << 30) -#define DRAM_DEV_SEL_1 (1 << 30) +#define DRAM_DEV_SEL_0 BIT(31) +#define DRAM_DEV_SEL_1 BIT(30) #define EMC_CFG_POWER_FEATURES_MASK \ (EMC_CFG_DYN_SREF | EMC_CFG_DRAM_ACPD | EMC_CFG_DRAM_CLKSTOP_SR | \ diff --git a/drivers/memory/tegra/tegra30-emc.c b/drivers/memory/tegra/tegra30-emc.c index 829f6d673c96..a2f2738ccb94 100644 --- a/drivers/memory/tegra/tegra30-emc.c +++ b/drivers/memory/tegra/tegra30-emc.c @@ -150,8 +150,8 @@ #define EMC_SELF_REF_CMD_ENABLED BIT(0) #define DRAM_DEV_SEL_ALL (0 << 30) -#define DRAM_DEV_SEL_0 (2 << 30) -#define DRAM_DEV_SEL_1 (1 << 30) +#define DRAM_DEV_SEL_0 BIT(31) +#define DRAM_DEV_SEL_1 BIT(30) #define DRAM_BROADCAST(num) \ ((num) > 1 ? DRAM_DEV_SEL_ALL : DRAM_DEV_SEL_0) From patchwork Thu May 27 21:43:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285543 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 18486C4708A for ; Thu, 27 May 2021 21:44:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E55A8613BA for ; Thu, 27 May 2021 21:44:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235919AbhE0Vpn (ORCPT ); Thu, 27 May 2021 17:45:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235185AbhE0Vpe (ORCPT ); Thu, 27 May 2021 17:45:34 -0400 Received: from mail-lj1-x231.google.com (mail-lj1-x231.google.com [IPv6:2a00:1450:4864:20::231]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 84B00C06138A; Thu, 27 May 2021 14:44:00 -0700 (PDT) Received: by mail-lj1-x231.google.com with SMTP id o8so2792389ljp.0; Thu, 27 May 2021 14:44:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=XRjE9GrdNwqNM0RZjj5ET9YAbdAVTqOUbODt0FYhk9w=; b=NGoeuWnGVHoEID28m+ncG0eE2wUFpHxwpUFNP7RYr4c9Y4dWnvvcZ2L4hFoUstq7ID KpAy623wxUAV8ylIrrCzS8Ly/cfXAuBIkCRYWKOGpSVlBqDaUpn14PCnL8xbfu9tLt8x Qpl09vbIe8kpZ5tntHAjw2J7QlHGEx5fSi26HQYAwKtbihDb1CPCKlFDGLKPNxpsYXz9 e0l5P3oWISEUpdHwQ6dQM+PzRebmJZNLxPsYf/SmYNBL1wK2NZb0EARLwT7QgbYr5Gi+ 3reFAbUTjXr558cp02GzbIjh6AtspmaQJPH7iKKyGuvKWuHl+lZEh41XChAjBXe8iyO1 b2cA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=XRjE9GrdNwqNM0RZjj5ET9YAbdAVTqOUbODt0FYhk9w=; b=hL0LVe80mQ4RgEY7TOixzhhaYFZS0uuvma6uAMplrdop2RUnSxyXU3KcJdNrg8XbFI tb8/QyraBts6a7b+4/dbuN/y7hIer9EooiVHXtIvWrQAU/yy1kgaClJt6ypaBFkQh3Sr l3eA2fY8EYv0UmKZUrsCUUItJ3LFGEmPOdZApifH7VS4WGw6/be79u7NKkYEzh88Rf1I 08KndZ9gLhrb1rNmgEuJaUBPY2GQXIxOcrqSH6Tr02geiy67hstI4zCISnTR6SkADTw9 XtJIgMO8Cm0nEmqXfJSs9tHSYdTDh97/mO9CJvSsLxEVb0gHNe0Nbdh6uGDSPCFSG3sx a3BA== X-Gm-Message-State: AOAM530L3YpmRGwavOXUrv5CszH725UbRNmJrZ5wRCquxcjU+t7bNQBj frl6YcaHKlW6Uwx9P3uvkig= X-Google-Smtp-Source: ABdhPJxc73KjANnqm3MqI1cqF6YsgMnp8WWegVJfdwdNYHbyfsD2ubyzNtlZq0i8+BlLwv5eVKQSyg== X-Received: by 2002:a05:651c:39d:: with SMTP id e29mr4197306ljp.97.1622151838942; Thu, 27 May 2021 14:43:58 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.43.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:43:58 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 08/14] memory: tegra: Enable compile testing for all drivers Date: Fri, 28 May 2021 00:43:11 +0300 Message-Id: <20210527214317.31014-9-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Enable compile testing for all Tegra memory drivers. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Dmitry Osipenko --- drivers/memory/tegra/Kconfig | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/memory/tegra/Kconfig b/drivers/memory/tegra/Kconfig index a70967a56e52..71bba2345bce 100644 --- a/drivers/memory/tegra/Kconfig +++ b/drivers/memory/tegra/Kconfig @@ -2,16 +2,18 @@ config TEGRA_MC bool "NVIDIA Tegra Memory Controller support" default y - depends on ARCH_TEGRA + depends on ARCH_TEGRA || (COMPILE_TEST && COMMON_CLK) select INTERCONNECT help This driver supports the Memory Controller (MC) hardware found on NVIDIA Tegra SoCs. +if TEGRA_MC + config TEGRA20_EMC tristate "NVIDIA Tegra20 External Memory Controller driver" default y - depends on TEGRA_MC && ARCH_TEGRA_2x_SOC + depends on ARCH_TEGRA_2x_SOC || COMPILE_TEST select DEVFREQ_GOV_SIMPLE_ONDEMAND select PM_DEVFREQ help @@ -23,7 +25,7 @@ config TEGRA20_EMC config TEGRA30_EMC tristate "NVIDIA Tegra30 External Memory Controller driver" default y - depends on TEGRA_MC && ARCH_TEGRA_3x_SOC + depends on ARCH_TEGRA_3x_SOC || COMPILE_TEST select PM_OPP help This driver is for the External Memory Controller (EMC) found on @@ -34,8 +36,8 @@ config TEGRA30_EMC config TEGRA124_EMC tristate "NVIDIA Tegra124 External Memory Controller driver" default y - depends on TEGRA_MC && ARCH_TEGRA_124_SOC - select TEGRA124_CLK_EMC + depends on ARCH_TEGRA_124_SOC || COMPILE_TEST + select TEGRA124_CLK_EMC if ARCH_TEGRA select PM_OPP help This driver is for the External Memory Controller (EMC) found on @@ -49,10 +51,12 @@ config TEGRA210_EMC_TABLE config TEGRA210_EMC tristate "NVIDIA Tegra210 External Memory Controller driver" - depends on TEGRA_MC && ARCH_TEGRA_210_SOC + depends on ARCH_TEGRA_210_SOC || COMPILE_TEST select TEGRA210_EMC_TABLE help This driver is for the External Memory Controller (EMC) found on Tegra210 chips. The EMC controls the external DRAM on the board. This driver is required to change memory timings / clock rate for external memory. + +endif From patchwork Thu May 27 21:43:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285555 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8825FC4708E for ; Thu, 27 May 2021 21:44:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6BF48613BA for ; Thu, 27 May 2021 21:44:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236143AbhE0Vps (ORCPT ); Thu, 27 May 2021 17:45:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235551AbhE0Vpi (ORCPT ); Thu, 27 May 2021 17:45:38 -0400 Received: from mail-lj1-x231.google.com (mail-lj1-x231.google.com [IPv6:2a00:1450:4864:20::231]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7747CC06138F; Thu, 27 May 2021 14:44:01 -0700 (PDT) Received: by mail-lj1-x231.google.com with SMTP id f12so2744934ljp.2; Thu, 27 May 2021 14:44:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=iV9WsCaJBCveviAJl/4FdlzG92k3/7giwze1EtuzJCY=; b=XkNSu94YJD7JhuCQ2L7qzYnGHLGhI6wrRAvzfHwWiZOVX3dQYJOus7s9pdwR65yRDU r0gn9e3NUM1/j6px5X63xDWxPCCsCdSRTh3V53i34e1PJb6C/vjQNulrUHglZi3DSSL7 UK9zw6NVZOcNdbhF4EfmA4ZhcQK/xfQWjiKbpdlZvJcGcXpal/Iq/wyRQ/soRALkBjsH zrDZXDUxU6NNe/YdlPcOccUUzXkws/hBJSmqMpxiMi3DwUnJYkdZ0QlCRZSzBaixsR9W k7RDbwqi2mSqenQ793PWYjK2e5CHXwVslwBsiaDX1MItjji0Pwn/lCaYlTCLl0P/kiZo nh/Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=iV9WsCaJBCveviAJl/4FdlzG92k3/7giwze1EtuzJCY=; b=sy6RAs3u8EFrTn816x4xgaRBh4wk9LGS3ryfwZ5qI+aA+ZQaQY8BsGJCnLXDGDiPfQ 4lkqCFpcLhSeRa/lTV2m2TFdhE7Au24V8AqH6snDca03+u4Z8eMkckiR/9L4SJc2y9HP dHA89XmX0/QJQP5A/35+uLZRSFcX7CNdlBa0qKgJDwfv6vEDIE/BVfrU8/EszrsoqnIE vqe6DmhS5psb5axrauUgEWZ6b8xawiOiFnmM/Vy2W3W/GRkt+dzlPBYLC9oUmUlWAuKb VaO0BrsocCejcpJ+NEh9Oou39I44f460ScxJmp0/6DSlFk3Sp4E5s8PEBcVzX4G2HmJj 0aSQ== X-Gm-Message-State: AOAM532RujLg8mw7Yw+FjpeZluVbb5fXpy9rf6xqesCaZ3d+5YRsRLZS LmuBr5s+M4f2gin73FQdfj8= X-Google-Smtp-Source: ABdhPJy1Tfd6+d+7deDi2AsD8qMARALgRwBmArAOGrinzU2smSfd5b4c8KAndHtiwhiYAdynN2UpBQ== X-Received: by 2002:a2e:9116:: with SMTP id m22mr4100349ljg.176.1622151839899; Thu, 27 May 2021 14:43:59 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.43.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:43:59 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 09/14] memory: tegra20-emc: Use devm_tegra_core_dev_init_opp_table() Date: Fri, 28 May 2021 00:43:12 +0300 Message-Id: <20210527214317.31014-10-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Use common devm_tegra_core_dev_init_opp_table() helper for the OPP table initialization. Tested-by: Paul Fertser # PAZ00 T20 Tested-by: Nicolas Chauvet # PAZ00 T20 Reviewed-by: Krzysztof Kozlowski Signed-off-by: Dmitry Osipenko --- drivers/memory/tegra/tegra20-emc.c | 48 +++--------------------------- 1 file changed, 4 insertions(+), 44 deletions(-) diff --git a/drivers/memory/tegra/tegra20-emc.c b/drivers/memory/tegra/tegra20-emc.c index da8a0da8da79..a534197a5fb2 100644 --- a/drivers/memory/tegra/tegra20-emc.c +++ b/drivers/memory/tegra/tegra20-emc.c @@ -908,49 +908,6 @@ static int tegra_emc_interconnect_init(struct tegra_emc *emc) return err; } -static int tegra_emc_opp_table_init(struct tegra_emc *emc) -{ - u32 hw_version = BIT(tegra_sku_info.soc_process_id); - struct opp_table *hw_opp_table; - int err; - - hw_opp_table = dev_pm_opp_set_supported_hw(emc->dev, &hw_version, 1); - err = PTR_ERR_OR_ZERO(hw_opp_table); - if (err) { - dev_err(emc->dev, "failed to set OPP supported HW: %d\n", err); - return err; - } - - err = dev_pm_opp_of_add_table(emc->dev); - if (err) { - if (err == -ENODEV) - dev_err(emc->dev, "OPP table not found, please update your device tree\n"); - else - dev_err(emc->dev, "failed to add OPP table: %d\n", err); - - goto put_hw_table; - } - - dev_info_once(emc->dev, "OPP HW ver. 0x%x, current clock rate %lu MHz\n", - hw_version, clk_get_rate(emc->clk) / 1000000); - - /* first dummy rate-set initializes voltage state */ - err = dev_pm_opp_set_rate(emc->dev, clk_get_rate(emc->clk)); - if (err) { - dev_err(emc->dev, "failed to initialize OPP clock: %d\n", err); - goto remove_table; - } - - return 0; - -remove_table: - dev_pm_opp_of_remove_table(emc->dev); -put_hw_table: - dev_pm_opp_put_supported_hw(hw_opp_table); - - return err; -} - static void devm_tegra_emc_unset_callback(void *data) { tegra20_clk_set_emc_round_callback(NULL, NULL); @@ -1077,6 +1034,7 @@ static int tegra_emc_devfreq_init(struct tegra_emc *emc) static int tegra_emc_probe(struct platform_device *pdev) { + struct tegra_core_opp_params opp_params = {}; struct device_node *np; struct tegra_emc *emc; int irq, err; @@ -1122,7 +1080,9 @@ static int tegra_emc_probe(struct platform_device *pdev) if (err) return err; - err = tegra_emc_opp_table_init(emc); + opp_params.init_state = true; + + err = devm_tegra_core_dev_init_opp_table(&pdev->dev, &opp_params); if (err) return err; From patchwork Thu May 27 21:43:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285547 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 42128C47096 for ; Thu, 27 May 2021 21:44:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1B171613C9 for ; Thu, 27 May 2021 21:44:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236097AbhE0Vpq (ORCPT ); Thu, 27 May 2021 17:45:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235543AbhE0Vpi (ORCPT ); Thu, 27 May 2021 17:45:38 -0400 Received: from mail-lf1-x12a.google.com (mail-lf1-x12a.google.com [IPv6:2a00:1450:4864:20::12a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 75F4AC061343; Thu, 27 May 2021 14:44:02 -0700 (PDT) Received: by mail-lf1-x12a.google.com with SMTP id a5so2332394lfm.0; Thu, 27 May 2021 14:44:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=eUIhc9uggXHCPJQoAO/4UpzdPZReard7z2PxwHsBSd8=; b=Yczfx/RsfoFRSToQRTHR7l8rYFxZ2D097g20XQV1Gh7sL4WXVwLFc36qhbXnV9Lc2B T9CPi2+EhRQhZ0SRUGFCpLCfy/tI3AkXghvbZ/czt61zKav1TCRzwVyR9ddGtwQPSR8b DP56QQoMSyVi/1N34FrYW07xJ5er8l2jgmXlbs7fWgOAIcaBbNrnNul4FSEvM08Dfqab eEN2t7LqF7UV82x6xuV5n7H7zDHExGJQ2piSIAB0+XnmtW/xa7V8D1Z4aZcmN1sZdIu0 X0JuT41lhaKz4lIGtYW2jvzPrdtOYXG5X4ZARCkjetHKVXEsOP1cw9oJUnePSDSfl/EI PyFw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=eUIhc9uggXHCPJQoAO/4UpzdPZReard7z2PxwHsBSd8=; b=kEZgL01c+h4Uhctp+2+Lp0dk70TB3fH/P/2Q3bgp0OCl9GThUHIJ6IsEAkGHmCfFoO y0ft1jhbAWJO+VYs3pwTVMTFshX1HjOqaoNEsDWVCHG/awkUZOaTiF74aqz22oEIwJHU lnOGc/6cteim3or+rMiW1yVOPtTaUx6XSONhUQm+NV9WaT+nq+y6ZS/kn/fJo8z35puB tpi7a/Faq61KRF5OMg0eVMIyvt8CZ02xSUiLTa3XZZ2w5sgo5XWxCtKV5ZAzpz/6wKNT PGeLNmXi1CbN5jEELpaQdneXrEKZhggqcRbytiVVV/HNvbrsMMB/xNmA/5XadVKh1O/0 GqPw== X-Gm-Message-State: AOAM531bze0VbPeBDbd8qk0YStLJDJWDBDDuQWWRXgnPTTbQOSFS4PXf Rds89Qid5xUzUIKIuc1fyPU= X-Google-Smtp-Source: ABdhPJyRXlDgXJAcRDhXIu4xBSDCKdFbroHX+LIR24o0iZXhlvS7lUy1yjttlY4Ytv4E15ErfLiwmQ== X-Received: by 2002:a05:6512:3d20:: with SMTP id d32mr2326845lfv.459.1622151840867; Thu, 27 May 2021 14:44:00 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.43.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:44:00 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 10/14] memory: tegra30-emc: Use devm_tegra_core_dev_init_opp_table() Date: Fri, 28 May 2021 00:43:13 +0300 Message-Id: <20210527214317.31014-11-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Use common devm_tegra_core_dev_init_opp_table() helper for the OPP table initialization. Tested-by: Peter Geis # Ouya T30 Tested-by: Matt Merhar # Ouya T30 Reviewed-by: Krzysztof Kozlowski Signed-off-by: Dmitry Osipenko --- drivers/memory/tegra/tegra30-emc.c | 48 +++--------------------------- 1 file changed, 4 insertions(+), 44 deletions(-) diff --git a/drivers/memory/tegra/tegra30-emc.c b/drivers/memory/tegra/tegra30-emc.c index a2f2738ccb94..63e1983f8a0d 100644 --- a/drivers/memory/tegra/tegra30-emc.c +++ b/drivers/memory/tegra/tegra30-emc.c @@ -1480,49 +1480,6 @@ static int tegra_emc_interconnect_init(struct tegra_emc *emc) return err; } -static int tegra_emc_opp_table_init(struct tegra_emc *emc) -{ - u32 hw_version = BIT(tegra_sku_info.soc_speedo_id); - struct opp_table *hw_opp_table; - int err; - - hw_opp_table = dev_pm_opp_set_supported_hw(emc->dev, &hw_version, 1); - err = PTR_ERR_OR_ZERO(hw_opp_table); - if (err) { - dev_err(emc->dev, "failed to set OPP supported HW: %d\n", err); - return err; - } - - err = dev_pm_opp_of_add_table(emc->dev); - if (err) { - if (err == -ENODEV) - dev_err(emc->dev, "OPP table not found, please update your device tree\n"); - else - dev_err(emc->dev, "failed to add OPP table: %d\n", err); - - goto put_hw_table; - } - - dev_info_once(emc->dev, "OPP HW ver. 0x%x, current clock rate %lu MHz\n", - hw_version, clk_get_rate(emc->clk) / 1000000); - - /* first dummy rate-set initializes voltage state */ - err = dev_pm_opp_set_rate(emc->dev, clk_get_rate(emc->clk)); - if (err) { - dev_err(emc->dev, "failed to initialize OPP clock: %d\n", err); - goto remove_table; - } - - return 0; - -remove_table: - dev_pm_opp_of_remove_table(emc->dev); -put_hw_table: - dev_pm_opp_put_supported_hw(hw_opp_table); - - return err; -} - static void devm_tegra_emc_unset_callback(void *data) { tegra20_clk_set_emc_round_callback(NULL, NULL); @@ -1568,6 +1525,7 @@ static int tegra_emc_init_clk(struct tegra_emc *emc) static int tegra_emc_probe(struct platform_device *pdev) { + struct tegra_core_opp_params opp_params = {}; struct device_node *np; struct tegra_emc *emc; int err; @@ -1617,7 +1575,9 @@ static int tegra_emc_probe(struct platform_device *pdev) if (err) return err; - err = tegra_emc_opp_table_init(emc); + opp_params.init_state = true; + + err = devm_tegra_core_dev_init_opp_table(&pdev->dev, &opp_params); if (err) return err; From patchwork Thu May 27 21:43:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285549 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BD763C4708F for ; Thu, 27 May 2021 21:44:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A242B613BA for ; Thu, 27 May 2021 21:44:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236200AbhE0Vps (ORCPT ); Thu, 27 May 2021 17:45:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235703AbhE0Vpk (ORCPT ); Thu, 27 May 2021 17:45:40 -0400 Received: from mail-lj1-x22f.google.com (mail-lj1-x22f.google.com [IPv6:2a00:1450:4864:20::22f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6BA84C061760; Thu, 27 May 2021 14:44:03 -0700 (PDT) Received: by mail-lj1-x22f.google.com with SMTP id p20so2706620ljj.8; Thu, 27 May 2021 14:44:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=NrCxAlPUucoEt+gGLLTmwPl8GAwFzF+H/pcyQba15ag=; b=FXegwalCVFnEXsgeGk1/n14rulDVlLtbIYrjxqso/fjOpN5QdSkK5AUUgOLthsVi+2 dgOkEoBAGF6zO5EZ4QDuaEH5rrZS5KVwz8ns1K/C2stLaLsdTwhuZaOi/Ms2LFUk/Z0X TfbowLyqUtwRSuDRuNQ/u5HxSvDYXcrttetU3kg4fNrAPVLK28XDywrbEAa4dEG0Siqo XG0vB3rdsbWArjquLm5knLaHIPFspwl0cYbhR8leC5UIanOgV+sInSrvzvCwFCz6/FoX VFlLkyonmA1aQaytTVyusFUtCT5hokH5n7UoqgA2hMuNKKv55EwOCWCx1L7zdGj6apCA PKDA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=NrCxAlPUucoEt+gGLLTmwPl8GAwFzF+H/pcyQba15ag=; b=cQX4CgJcBWBSqIGsz1jHYENquF4qFtRLCWX27Px7gfU8SVrUDfvQNIQATxMeTiaWJo qmiUIGJNxcc2d1Rwjx6e/pyOzlwtx0o1FGDSXmebp2Lhu88Fb9RlfZYg0BXaFPFeuqeq +VaKLmolyW+gFb5k6GzzuMBtPeKMVAAGc/jT/QrepCnijZ9xTU7LV/sc8LJT0JJg/zoB pjzGNyhnEgcpDbKOXh5Os21+zJ496t50cEIs4cFNvSbCt6PB/ppeDSljz+g1EaEGgGsH koxE7YXNw9TDdGSm0OT151jOghAeebLxnWW+xB35ZYCUw8F42VzgSqbu7lyW2pnNJcBA BwIw== X-Gm-Message-State: AOAM530GqSCdz3mHIRBiOu4G7XaPECZA0TAiFIZcAdfFdQDZhUOLJUxe np8zoqd+e5DgMX7SmD64tK1+FziJzA8= X-Google-Smtp-Source: ABdhPJwb4FBmK45V3zumCRnOnWzlQidN1kKvpl4OTPT3g4cB5wHLAj9zh6uxeuY+cZzplyzszQBORQ== X-Received: by 2002:a2e:9dcf:: with SMTP id x15mr4157662ljj.257.1622151841832; Thu, 27 May 2021 14:44:01 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.44.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:44:01 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 11/14] dt-bindings: soc: tegra-pmc: Document core power domain Date: Fri, 28 May 2021 00:43:14 +0300 Message-Id: <20210527214317.31014-12-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org All NVIDIA Tegra SoCs have a core power domain where majority of hardware blocks reside. Document the new core power domain properties. Reviewed-by: Rob Herring Reviewed-by: Ulf Hansson Signed-off-by: Dmitry Osipenko --- .../arm/tegra/nvidia,tegra20-pmc.yaml | 35 +++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.yaml b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.yaml index 43fd2f8927d0..0afec83cc723 100644 --- a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.yaml +++ b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.yaml @@ -301,6 +301,33 @@ patternProperties: additionalProperties: false + core-domain: + type: object + description: | + The vast majority of hardware blocks of Tegra SoC belong to a + Core power domain, which has a dedicated voltage rail that powers + the blocks. + + properties: + operating-points-v2: + description: + Should contain level, voltages and opp-supported-hw property. + The supported-hw is a bitfield indicating SoC speedo or process + ID mask. + + "#power-domain-cells": + const: 0 + + required: + - operating-points-v2 + - "#power-domain-cells" + + additionalProperties: false + + core-supply: + description: + Phandle to voltage regulator connected to the SoC Core power rail. + required: - compatible - reg @@ -325,6 +352,7 @@ examples: tegra_pmc: pmc@7000e400 { compatible = "nvidia,tegra210-pmc"; reg = <0x7000e400 0x400>; + core-supply = <®ulator>; clocks = <&tegra_car TEGRA210_CLK_PCLK>, <&clk32k_in>; clock-names = "pclk", "clk32k_in"; #clock-cells = <1>; @@ -338,17 +366,24 @@ examples: nvidia,core-power-req-active-high; nvidia,sys-clock-req-active-high; + pd_core: core-domain { + operating-points-v2 = <&core_opp_table>; + #power-domain-cells = <0>; + }; + powergates { pd_audio: aud { clocks = <&tegra_car TEGRA210_CLK_APE>, <&tegra_car TEGRA210_CLK_APB2APE>; resets = <&tegra_car 198>; + power-domains = <&pd_core>; #power-domain-cells = <0>; }; pd_xusbss: xusba { clocks = <&tegra_car TEGRA210_CLK_XUSB_SS>; resets = <&tegra_car TEGRA210_CLK_XUSB_SS>; + power-domains = <&pd_core>; #power-domain-cells = <0>; }; }; From patchwork Thu May 27 21:43:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285557 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A62D2C47241 for ; Thu, 27 May 2021 21:44:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8808E613D4 for ; Thu, 27 May 2021 21:44:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236326AbhE0Vpv (ORCPT ); Thu, 27 May 2021 17:45:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235842AbhE0Vpl (ORCPT ); Thu, 27 May 2021 17:45:41 -0400 Received: from mail-lj1-x22d.google.com (mail-lj1-x22d.google.com [IPv6:2a00:1450:4864:20::22d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7CBBEC061574; Thu, 27 May 2021 14:44:04 -0700 (PDT) Received: by mail-lj1-x22d.google.com with SMTP id e11so2677455ljn.13; Thu, 27 May 2021 14:44:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=2HXxBEjKnEhLTbsgfhlVChSuNctEvdWxJbeZRkTbs7Y=; b=Jywjo6rspFdJm89gph+loOWtDMTnxnFTPCYUjv4IXzj2akJTlt1QEZEgdjmsPLuR2T FCHRjce4zftn3aYLRsijlhLa4krEycJyoOBwwf1zIQDkV2afZ8Wi4iiJ/Wj4FVtnFiJx 625/XfhgAX0SHcmeJGfFlVEMJUfvW0nswRvfJMaPXXxWs4TKcMHGqbnD0UMmat11GtMM Rsxj7BwVCr3UDGpQR4lgGVbIr8e3vADuHWqOtHLjG9V9kj6HS4/3Z/OCaCjEqOK7CCTi ZAHTzZ2Cb5CkMGOA7dYZbGmf07q3DGHmVcrcBjauRCS5v/ee2zuPySp5GAfGlT3hN5XE yV+g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=2HXxBEjKnEhLTbsgfhlVChSuNctEvdWxJbeZRkTbs7Y=; b=khaAmOouUzeb4ohonFUDuGCcQryexCM6+kYjEJNGFozF15FglPTH6SO1gxPZPmmTsm nLw7bdpBp076BcuXBb9T9BBabYaOu4hLAZFLqiFqPT8x0LWgi+BjvafYUcsn9SHfr+ZW +kTB7SpXKkNPnfED7AUAPKAWUmOTuEPbfrVsHfPZQENYpm8NL0UhftVgC/0wG+5QWpCr ADvjf9p4eKX3Pl9SpJbH/IGNf6hOt74OMyToCGfPXklqy+lowa5oo/6SfDtZcNk1fJ5Y qEi5QsehjzAyQ3l+ZxUFWHmKxpFGD+V8xAKdQqSnGLvqPlDThkiYNpKxs2hH8GH4hhI1 2IPA== X-Gm-Message-State: AOAM532EgidcQIN47uJDp0gkGgupmtV8aPOMH63Vq4eMFhM9z/FHfOud OrbblGhq1PJcAwB23UojVY8= X-Google-Smtp-Source: ABdhPJwUmuY9rWQXkxau0Bu+SMEaSJNZj+HtpvgAptSbxQlaCWKGg9GBPwWBKg4lRG+Zv6DzZ0Py3A== X-Received: by 2002:a2e:b80b:: with SMTP id u11mr4244615ljo.94.1622151842845; Thu, 27 May 2021 14:44:02 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.44.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:44:02 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 12/14] soc/tegra: pmc: Add core power domain Date: Fri, 28 May 2021 00:43:15 +0300 Message-Id: <20210527214317.31014-13-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org NVIDIA Tegra SoCs have multiple power domains, each domain corresponds to an external SoC power rail. Core power domain covers vast majority of hardware blocks within a Tegra SoC. The voltage of a power domain should be set to a level which satisfies all devices within the power domain. Add support for the core power domain which controls voltage state of the domain. This allows us to support system-wide DVFS on Tegra20-210 SoCs. The PMC powergate domains now are sub-domains of the core domain, this requires device-tree updating, older DTBs are unaffected and will continue to work as before. Tested-by: Peter Geis # Ouya T30 Tested-by: Paul Fertser # PAZ00 T20 Tested-by: Nicolas Chauvet # PAZ00 T20 and TK1 T124 Tested-by: Matt Merhar # Ouya T30 Signed-off-by: Dmitry Osipenko --- drivers/soc/tegra/Kconfig | 14 +++++ drivers/soc/tegra/pmc.c | 120 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 134 insertions(+) diff --git a/drivers/soc/tegra/Kconfig b/drivers/soc/tegra/Kconfig index 976dee036470..7057254604ee 100644 --- a/drivers/soc/tegra/Kconfig +++ b/drivers/soc/tegra/Kconfig @@ -13,6 +13,7 @@ config ARCH_TEGRA_2x_SOC select PINCTRL_TEGRA20 select PL310_ERRATA_727915 if CACHE_L2X0 select PL310_ERRATA_769419 if CACHE_L2X0 + select SOC_TEGRA_COMMON select SOC_TEGRA_FLOWCTRL select SOC_TEGRA_PMC select SOC_TEGRA20_VOLTAGE_COUPLER @@ -27,6 +28,7 @@ config ARCH_TEGRA_3x_SOC select ARM_ERRATA_764369 if SMP select PINCTRL_TEGRA30 select PL310_ERRATA_769419 if CACHE_L2X0 + select SOC_TEGRA_COMMON select SOC_TEGRA_FLOWCTRL select SOC_TEGRA_PMC select SOC_TEGRA30_VOLTAGE_COUPLER @@ -40,6 +42,7 @@ config ARCH_TEGRA_114_SOC select ARM_ERRATA_798181 if SMP select HAVE_ARM_ARCH_TIMER select PINCTRL_TEGRA114 + select SOC_TEGRA_COMMON select SOC_TEGRA_FLOWCTRL select SOC_TEGRA_PMC select TEGRA_TIMER @@ -51,6 +54,7 @@ config ARCH_TEGRA_124_SOC bool "Enable support for Tegra124 family" select HAVE_ARM_ARCH_TIMER select PINCTRL_TEGRA124 + select SOC_TEGRA_COMMON select SOC_TEGRA_FLOWCTRL select SOC_TEGRA_PMC select TEGRA_TIMER @@ -66,6 +70,7 @@ if ARM64 config ARCH_TEGRA_132_SOC bool "NVIDIA Tegra132 SoC" select PINCTRL_TEGRA124 + select SOC_TEGRA_COMMON select SOC_TEGRA_FLOWCTRL select SOC_TEGRA_PMC help @@ -77,6 +82,7 @@ config ARCH_TEGRA_132_SOC config ARCH_TEGRA_210_SOC bool "NVIDIA Tegra210 SoC" select PINCTRL_TEGRA210 + select SOC_TEGRA_COMMON select SOC_TEGRA_FLOWCTRL select SOC_TEGRA_PMC select TEGRA_TIMER @@ -99,6 +105,7 @@ config ARCH_TEGRA_186_SOC select TEGRA_BPMP select TEGRA_HSP_MBOX select TEGRA_IVC + select SOC_TEGRA_COMMON select SOC_TEGRA_PMC help Enable support for the NVIDIA Tegar186 SoC. The Tegra186 features a @@ -115,6 +122,7 @@ config ARCH_TEGRA_194_SOC select TEGRA_BPMP select TEGRA_HSP_MBOX select TEGRA_IVC + select SOC_TEGRA_COMMON select SOC_TEGRA_PMC help Enable support for the NVIDIA Tegra194 SoC. @@ -125,6 +133,7 @@ config ARCH_TEGRA_234_SOC select TEGRA_BPMP select TEGRA_HSP_MBOX select TEGRA_IVC + select SOC_TEGRA_COMMON select SOC_TEGRA_PMC help Enable support for the NVIDIA Tegra234 SoC. @@ -132,6 +141,11 @@ config ARCH_TEGRA_234_SOC endif endif +config SOC_TEGRA_COMMON + bool + select PM_OPP + select PM_GENERIC_DOMAINS + config SOC_TEGRA_FUSE def_bool y depends on ARCH_TEGRA diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 8e3b78bb2ac2..62f0f928658d 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -38,6 +38,7 @@ #include #include #include +#include #include #include #include @@ -1302,12 +1303,110 @@ static int tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np) return err; } +static int +tegra_pmc_core_pd_set_performance_state(struct generic_pm_domain *genpd, + unsigned int level) +{ + struct dev_pm_opp *opp; + int err; + + opp = dev_pm_opp_find_level_ceil(&genpd->dev, &level); + if (IS_ERR(opp)) { + dev_err(&genpd->dev, "failed to find OPP for level %u: %pe\n", + level, opp); + return PTR_ERR(opp); + } + + mutex_lock(&pmc->powergates_lock); + err = dev_pm_opp_set_opp(pmc->dev, opp); + mutex_unlock(&pmc->powergates_lock); + + dev_pm_opp_put(opp); + + if (err) { + dev_err(&genpd->dev, "failed to set voltage to %duV: %d\n", + level, err); + return err; + } + + return 0; +} + +static unsigned int +tegra_pmc_core_pd_opp_to_performance_state(struct generic_pm_domain *genpd, + struct dev_pm_opp *opp) +{ + return dev_pm_opp_get_level(opp); +} + +static int tegra_pmc_core_pd_add(struct tegra_pmc *pmc, struct device_node *np) +{ + static struct lock_class_key tegra_core_domain_lock_class; + struct generic_pm_domain *genpd; + const char *rname = "core"; + int err; + + genpd = devm_kzalloc(pmc->dev, sizeof(*genpd), GFP_KERNEL); + if (!genpd) + return -ENOMEM; + + genpd->name = np->name; + genpd->set_performance_state = tegra_pmc_core_pd_set_performance_state; + genpd->opp_to_performance_state = tegra_pmc_core_pd_opp_to_performance_state; + + err = devm_pm_opp_set_regulators(pmc->dev, &rname, 1); + if (err) + return dev_err_probe(pmc->dev, err, + "failed to set core OPP regulator\n"); + + err = pm_genpd_init(genpd, NULL, false); + if (err) { + dev_err(pmc->dev, "failed to init core genpd: %d\n", err); + return err; + } + + /* + * We have a "PMC pwrgate -> Core" hierarchy of the power domains + * where PMC needs to resume and change performance (voltage) of the + * Core domain from the PMC GENPD on/off callbacks, hence we need + * to annotate the lock in order to remove confusion from the + * lockdep checker when a nested access happens. + */ + lockdep_set_class(&genpd->mlock, &tegra_core_domain_lock_class); + + err = of_genpd_add_provider_simple(np, genpd); + if (err) { + dev_err(pmc->dev, "failed to add core genpd: %d\n", err); + goto remove_genpd; + } + + return 0; + +remove_genpd: + pm_genpd_remove(genpd); + + return err; +} + static int tegra_powergate_init(struct tegra_pmc *pmc, struct device_node *parent) { + struct of_phandle_args child_args, parent_args; struct device_node *np, *child; int err = 0; + /* + * Core power domain is the parent of powergate domains, hence it + * should be registered first. + */ + np = of_get_child_by_name(parent, "core-domain"); + if (np) { + err = tegra_pmc_core_pd_add(pmc, np); + of_node_put(np); + if (err) + return err; + } + np = of_get_child_by_name(parent, "powergates"); if (!np) return 0; @@ -1318,6 +1417,21 @@ static int tegra_powergate_init(struct tegra_pmc *pmc, of_node_put(child); break; } + + if (of_parse_phandle_with_args(child, "power-domains", + "#power-domain-cells", + 0, &parent_args)) + continue; + + child_args.np = child; + child_args.args_count = 0; + + err = of_genpd_add_subdomain(&parent_args, &child_args); + of_node_put(parent_args.np); + if (err) { + of_node_put(child); + break; + } } of_node_put(np); @@ -1361,6 +1475,12 @@ static void tegra_powergate_remove_all(struct device_node *parent) } of_node_put(np); + + np = of_get_child_by_name(parent, "core-domain"); + if (np) { + of_genpd_del_provider(np); + of_genpd_remove_last(np); + } } static const struct tegra_io_pad_soc * From patchwork Thu May 27 21:43:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285551 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5536BC4709C for ; Thu, 27 May 2021 21:44:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 38712613BA for ; Thu, 27 May 2021 21:44:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236279AbhE0Vpu (ORCPT ); Thu, 27 May 2021 17:45:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34142 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235698AbhE0Vpk (ORCPT ); Thu, 27 May 2021 17:45:40 -0400 Received: from mail-lf1-x130.google.com (mail-lf1-x130.google.com [IPv6:2a00:1450:4864:20::130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 71340C061761; Thu, 27 May 2021 14:44:05 -0700 (PDT) Received: by mail-lf1-x130.google.com with SMTP id e17so2279999lfb.2; Thu, 27 May 2021 14:44:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=r+VpkeiCREzCB6f6A6h2ui2qcNPLr5jeX29c4cdIlp8=; b=SpeUd26EXkNhQRusU3huZ0xPKo00zuhrBfvkeJeacqB8L2LDtRbhKNq9qtObLP1+Gs yi5OSZQ1siqo4kkfrg4mByS0MJG6KogA4cItN88ocvuLYL7p3JPD1HoM5VCbAaGVjQHY vHbMPtDZsKqAji87ebMK8jnBEoB8zcL2PxTB6Y3WbJWuuhEP24uLnUIzKuDW1GGfJV6e dRebHhJsQ6nNL1996ba+LPvlI0xdPXMC9B+eus+CXT5Qavg+EeG6NAqezxkqIdfwZWM6 l1OLVu8ckX4EugadjC5s1KFrxrBRZ/X4epAUkG3BWHrpGN1+IrxxQjIMY9NJ5+LDD5GY y2tg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=r+VpkeiCREzCB6f6A6h2ui2qcNPLr5jeX29c4cdIlp8=; b=XtFeESONBQ8SKlOEydnKf5QJvmMukLd6xjqwHLF5ahIARQ+HraTANfo6XPjf0Y8n07 2DQm2kSkqjvwxQc3a+fS3HXz4zL8xisA1SA9m4b9LMvbvYqPnczRj/IOPa5oQU/BuZhZ z5mfLQ8fVKavBRTA7HqPYsKHat1selrBV4JWPMIPpPUNCyFLqEKZaDA7PPQHhHGyfa5F hHDkcMT5RdNE9hJRI3160hXls5oXmZPXznWxCDMHv3fc7aPqGk4JP5phylGh4MI+kBRB CjnqX4xniwy1aIn8FKTr+TtCguHHqoaaxLkrIMiQGkqgr83jr5F4I8wTvqHbXkKjShHK SD+g== X-Gm-Message-State: AOAM5314A9oowpjN/EQPT8DSeegQLIY5lQiuwO0yfgoYxBn2gqfyPcWt zNtZ2DzVcNWbLQPcDfv+sDQ= X-Google-Smtp-Source: ABdhPJz6zfxQbW4HdnXKWO3QpwBBFeBgukn3bd5CPT74y1jBvNJCXxpEVn2ggHZ4rJvv2MybHuklcw== X-Received: by 2002:a05:6512:1318:: with SMTP id x24mr3510785lfu.53.1622151843843; Thu, 27 May 2021 14:44:03 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.44.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:44:03 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 13/14] soc/tegra: pmc: Add driver state syncing Date: Fri, 28 May 2021 00:43:16 +0300 Message-Id: <20210527214317.31014-14-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Add driver state syncing that is invoked once all PMC consumers are attached and ready. The consumers are the power domain clients. The synchronization callback is invoked once all client drivers are probed, the driver core handles this for us. This callback informs PMC driver that all voltage votes are initialized by each PD client and it's safe to begin voltage scaling of the core power domain. Signed-off-by: Dmitry Osipenko --- drivers/soc/tegra/pmc.c | 23 +++++++++++++++++++++++ include/soc/tegra/pmc.h | 7 +++++++ 2 files changed, 30 insertions(+) diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 62f0f928658d..e8e5636f01f8 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -429,6 +429,8 @@ struct tegra_pmc { struct irq_chip irq; struct notifier_block clk_nb; + + bool core_domain_state_synced; }; static struct tegra_pmc *pmc = &(struct tegra_pmc) { @@ -1303,6 +1305,11 @@ static int tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np) return err; } +bool tegra_pmc_core_domain_state_synced(void) +{ + return pmc->core_domain_state_synced; +} + static int tegra_pmc_core_pd_set_performance_state(struct generic_pm_domain *genpd, unsigned int level) @@ -3792,6 +3799,21 @@ static const struct of_device_id tegra_pmc_match[] = { { } }; +static void tegra_pmc_sync_state(struct device *dev) +{ + int err; + + pmc->core_domain_state_synced = true; + + /* this is a no-op if core regulator isn't used */ + mutex_lock(&pmc->powergates_lock); + err = dev_pm_opp_sync_regulators(dev); + mutex_unlock(&pmc->powergates_lock); + + if (err) + dev_err(dev, "failed to sync regulators: %d\n", err); +} + static struct platform_driver tegra_pmc_driver = { .driver = { .name = "tegra-pmc", @@ -3800,6 +3822,7 @@ static struct platform_driver tegra_pmc_driver = { #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM) .pm = &tegra_pmc_pm_ops, #endif + .sync_state = tegra_pmc_sync_state, }, .probe = tegra_pmc_probe, }; diff --git a/include/soc/tegra/pmc.h b/include/soc/tegra/pmc.h index 361cb64246f7..d186bccd125d 100644 --- a/include/soc/tegra/pmc.h +++ b/include/soc/tegra/pmc.h @@ -171,6 +171,8 @@ int tegra_io_rail_power_off(unsigned int id); void tegra_pmc_set_suspend_mode(enum tegra_suspend_mode mode); void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode); +bool tegra_pmc_core_domain_state_synced(void); + #else static inline int tegra_powergate_power_on(unsigned int id) { @@ -227,6 +229,11 @@ static inline void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode) { } +static inline bool tegra_pmc_core_domain_state_synced(void) +{ + return false; +} + #endif /* CONFIG_SOC_TEGRA_PMC */ #if defined(CONFIG_SOC_TEGRA_PMC) && defined(CONFIG_PM_SLEEP) From patchwork Thu May 27 21:43:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 12285553 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D82E8C4709B for ; Thu, 27 May 2021 21:44:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B5B5261402 for ; Thu, 27 May 2021 21:44:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236264AbhE0Vpu (ORCPT ); Thu, 27 May 2021 17:45:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34146 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235793AbhE0Vpk (ORCPT ); Thu, 27 May 2021 17:45:40 -0400 Received: from mail-lj1-x22e.google.com (mail-lj1-x22e.google.com [IPv6:2a00:1450:4864:20::22e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9ACD7C061763; Thu, 27 May 2021 14:44:06 -0700 (PDT) Received: by mail-lj1-x22e.google.com with SMTP id w15so2696351ljo.10; Thu, 27 May 2021 14:44:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ifCod93ETyGPmmfLtl3IBeFp9blcjqCRjZs9HqcoCbk=; b=nPhfvVba6cP0BsxSnupUbTN8KkPK56j2VMa1uLJTdRVW5RZCFL7FX9GwUvwVS3rI+g H6YFZhLo9g2SyofsAiCuvMXBivwxzkNHe4izEQ4zgJc+SDB9JQCAhHr9AXz72vef7AV7 iR3VzdIF6dKNgRyxagem92kQLkcTuNR2v8nn6GQ6ZioWTVTG+dyksJuNnqkzZTvEgO41 YTiMUHmAyBl/fmB4h+1aYZai/PcKqRROb7Htt0O7Dz1c5qQmZrWKMUoyQhkxygBkedr0 OfzCdhKex2CrQrtG6MthkIfoi/7Y8MWQiVLYBCuhyhQRxpqQZ02++SEFXD+VFBuWcdoX 1W3w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ifCod93ETyGPmmfLtl3IBeFp9blcjqCRjZs9HqcoCbk=; b=GuxdT3RUovlmfbbLZmTbZvt8yUJaQWEzhtphCPYinhgrMnxTzY8Wjr9YyiUXIH12r8 IJ9uqOudK66npo8IUIZeiUk2x3uGTF+F2KYNFdwDu9XFzLraYYx4yP2d4kz4tgpcFUBV wQN0TqguQbzCnwR8xDCZWvasEjficLib//YH/QQT6b8g5VSs47tyn+OztU4bgo57tYjB lWanyJTTcKCdtxohPYqJQjO9F/eMIHU7ENQNpqLAGX9maDtBuEIPG8srjkeDE/EaD3hv hyBRo2kWpwG1SDtIsNYU4E91hgxCYjhOkN1DeF4MMqc644xgmrNuDuGVv8dc8dMEmaQW wCoQ== X-Gm-Message-State: AOAM533u+LMhiWCXr8Xk/UsfYdeeleWv3jldZ+y6YrVtAL5oEx9PSsUF JFOHjHH90RIyT2xL+I+eUHc= X-Google-Smtp-Source: ABdhPJz1x/bqO3NU1NuwIcmqW4wfmVQmcJChCi7EZh8Mu+lM7evAqaDHitFwDSlb+PX4gskMo00bqQ== X-Received: by 2002:a2e:9844:: with SMTP id e4mr4141681ljj.500.1622151844851; Thu, 27 May 2021 14:44:04 -0700 (PDT) Received: from localhost.localdomain (46-138-12-55.dynamic.spd-mgts.ru. [46.138.12.55]) by smtp.gmail.com with ESMTPSA id v11sm298153lfr.44.2021.05.27.14.44.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 May 2021 14:44:04 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , =?utf-8?q?N?= =?utf-8?q?ikola_Milosavljevi=C4=87?= , Ulf Hansson , Peter Geis , Nicolas Chauvet , Viresh Kumar , Stephen Boyd , Matt Merhar , Paul Fertser , Mark Brown , Liam Girdwood , Krzysztof Kozlowski , Mikko Perttunen Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Nathan Chancellor , linux-clk@vger.kernel.org Subject: [PATCH v4 14/14] soc/tegra: regulators: Support core domain state syncing Date: Fri, 28 May 2021 00:43:17 +0300 Message-Id: <20210527214317.31014-15-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210527214317.31014-1-digetx@gmail.com> References: <20210527214317.31014-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org The core voltage shall not drop until state of core domain is synced, i.e. all device drivers that use core domain are loaded and ready. Support core domain state syncing. The core domain driver invokes the core-regulator voltage syncing once the state of domain is synced, at this point the core voltage is allowed to go lower than the level left after bootloader. Tested-by: Peter Geis # Ouya T30 Tested-by: Paul Fertser # PAZ00 T20 Tested-by: Nicolas Chauvet # PAZ00 T20 and TK1 T124 Tested-by: Matt Merhar # Ouya T30 Reviewed-by: Ulf Hansson Signed-off-by: Dmitry Osipenko --- drivers/soc/tegra/regulators-tegra20.c | 19 ++++++++++++++++++- drivers/soc/tegra/regulators-tegra30.c | 18 +++++++++++++++++- 2 files changed, 35 insertions(+), 2 deletions(-) diff --git a/drivers/soc/tegra/regulators-tegra20.c b/drivers/soc/tegra/regulators-tegra20.c index 3479be5ee494..b8ce9fd0650d 100644 --- a/drivers/soc/tegra/regulators-tegra20.c +++ b/drivers/soc/tegra/regulators-tegra20.c @@ -17,6 +17,8 @@ #include #include +#include + struct tegra_regulator_coupler { struct regulator_coupler coupler; struct regulator_dev *core_rdev; @@ -42,6 +44,21 @@ static int tegra20_core_limit(struct tegra_regulator_coupler *tegra, int core_cur_uV; int err; + /* + * Tegra20 SoC has critical DVFS-capable devices that are + * permanently-active or active at a boot time, like EMC + * (DRAM controller) or Display controller for example. + * + * The voltage of a CORE SoC power domain shall not be dropped below + * a minimum level, which is determined by device's clock rate. + * This means that we can't fully allow CORE voltage scaling until + * the state of all DVFS-critical CORE devices is synced. + */ + if (tegra_pmc_core_domain_state_synced() && !tegra->sys_reboot_mode) { + pr_info_once("voltage state synced\n"); + return 0; + } + if (tegra->core_min_uV > 0) return tegra->core_min_uV; @@ -62,7 +79,7 @@ static int tegra20_core_limit(struct tegra_regulator_coupler *tegra, */ tegra->core_min_uV = core_max_uV; - pr_info("core minimum voltage limited to %duV\n", tegra->core_min_uV); + pr_info("core voltage initialized to %duV\n", tegra->core_min_uV); return tegra->core_min_uV; } diff --git a/drivers/soc/tegra/regulators-tegra30.c b/drivers/soc/tegra/regulators-tegra30.c index 18fe53d0a870..e74bbc9c7859 100644 --- a/drivers/soc/tegra/regulators-tegra30.c +++ b/drivers/soc/tegra/regulators-tegra30.c @@ -18,6 +18,7 @@ #include #include +#include struct tegra_regulator_coupler { struct regulator_coupler coupler; @@ -43,6 +44,21 @@ static int tegra30_core_limit(struct tegra_regulator_coupler *tegra, int core_cur_uV; int err; + /* + * Tegra30 SoC has critical DVFS-capable devices that are + * permanently-active or active at a boot time, like EMC + * (DRAM controller) or Display controller for example. + * + * The voltage of a CORE SoC power domain shall not be dropped below + * a minimum level, which is determined by device's clock rate. + * This means that we can't fully allow CORE voltage scaling until + * the state of all DVFS-critical CORE devices is synced. + */ + if (tegra_pmc_core_domain_state_synced() && !tegra->sys_reboot_mode) { + pr_info_once("voltage state synced\n"); + return 0; + } + if (tegra->core_min_uV > 0) return tegra->core_min_uV; @@ -63,7 +79,7 @@ static int tegra30_core_limit(struct tegra_regulator_coupler *tegra, */ tegra->core_min_uV = core_max_uV; - pr_info("core minimum voltage limited to %duV\n", tegra->core_min_uV); + pr_info("core voltage initialized to %duV\n", tegra->core_min_uV); return tegra->core_min_uV; }