From patchwork Thu Jul 26 09:22:15 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 10545461 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A1E6F112E for ; Thu, 26 Jul 2018 09:22:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9194C2ADF6 for ; Thu, 26 Jul 2018 09:22:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 84BF82AECD; Thu, 26 Jul 2018 09:22:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 93F482AEC6 for ; Thu, 26 Jul 2018 09:22:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729077AbeGZKi1 (ORCPT ); Thu, 26 Jul 2018 06:38:27 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:41201 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729044AbeGZKi1 (ORCPT ); Thu, 26 Jul 2018 06:38:27 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1ficTX-0002aq-Qa; Thu, 26 Jul 2018 11:22:23 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1ficTV-0004Vr-Ty; Thu, 26 Jul 2018 11:22:21 +0200 From: Oleksij Rempel To: Shawn Guo , Mark Brown , "Rafael J. Wysocki" Cc: Oleksij Rempel , kernel@pengutronix.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Andrew Morton , Liam Girdwood , Leonard Crestez , Rob Herring , Mark Rutland , Michael Turquette , Stephen Boyd , Fabio Estevam , Russell King , linux-imx@nxp.com, yibin.gong@nxp.com, "A.s. Dong" Subject: [PATCH v8 1/6] ARM: imx6q: provide documentation for new fsl,pmic-stby-poweroff property Date: Thu, 26 Jul 2018 11:22:15 +0200 Message-Id: <20180726092220.17250-2-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180726092220.17250-1-o.rempel@pengutronix.de> References: <20180726092220.17250-1-o.rempel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-clk@vger.kernel.org Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Oleksij Rempel Acked-by: Rob Herring --- Documentation/devicetree/bindings/clock/imx6q-clock.txt | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/devicetree/bindings/clock/imx6q-clock.txt b/Documentation/devicetree/bindings/clock/imx6q-clock.txt index a45ca67a9d5f..e1308346e00d 100644 --- a/Documentation/devicetree/bindings/clock/imx6q-clock.txt +++ b/Documentation/devicetree/bindings/clock/imx6q-clock.txt @@ -6,6 +6,14 @@ Required properties: - interrupts: Should contain CCM interrupt - #clock-cells: Should be <1> +Optional properties: +- fsl,pmic-stby-poweroff: Configure CCM to assert PMIC_STBY_REQ signal + on power off. + Use this property if the SoC should be powered off by external power + management IC (PMIC) triggered via PMIC_STBY_REQ signal. + Boards that are designed to initiate poweroff on PMIC_ON_REQ signal should + be using "syscon-poweroff" driver instead. + The clock consumer should specify the desired clock by having the clock ID in its "clocks" phandle cell. See include/dt-bindings/clock/imx6qdl-clock.h for the full list of i.MX6 Quad and DualLite clock IDs. From patchwork Thu Jul 26 09:22:16 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 10545459 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C81EBA639 for ; Thu, 26 Jul 2018 09:22:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B5AD92AEBF for ; Thu, 26 Jul 2018 09:22:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A9B482ADF6; Thu, 26 Jul 2018 09:22:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 48B9B2AEBF for ; Thu, 26 Jul 2018 09:22:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729074AbeGZKi0 (ORCPT ); Thu, 26 Jul 2018 06:38:26 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:45951 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728989AbeGZKi0 (ORCPT ); Thu, 26 Jul 2018 06:38:26 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1ficTX-0002ar-QY; Thu, 26 Jul 2018 11:22:23 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1ficTV-0004W0-V0; Thu, 26 Jul 2018 11:22:21 +0200 From: Oleksij Rempel To: Shawn Guo , Mark Brown , "Rafael J. Wysocki" Cc: Oleksij Rempel , kernel@pengutronix.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Andrew Morton , Liam Girdwood , Leonard Crestez , Rob Herring , Mark Rutland , Michael Turquette , Stephen Boyd , Fabio Estevam , Russell King , linux-imx@nxp.com, yibin.gong@nxp.com, "A.s. Dong" Subject: [PATCH v8 2/6] ARM: imx6: register pm_power_off handler if "fsl,pmic-stby-poweroff" is set Date: Thu, 26 Jul 2018 11:22:16 +0200 Message-Id: <20180726092220.17250-3-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180726092220.17250-1-o.rempel@pengutronix.de> References: <20180726092220.17250-1-o.rempel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-clk@vger.kernel.org Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP One of the Freescale recommended sequences for power off with external PMIC is the following: ... 3. SoC is programming PMIC for power off when standby is asserted. 4. In CCM STOP mode, Standby is asserted, PMIC gates SoC supplies. See: http://www.nxp.com/assets/documents/data/en/reference-manuals/IMX6DQRM.pdf page 5083 This patch implements step 4. of this sequence. Signed-off-by: Oleksij Rempel --- arch/arm/mach-imx/pm-imx6.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c index 017539dd712b..2f5c643f62fb 100644 --- a/arch/arm/mach-imx/pm-imx6.c +++ b/arch/arm/mach-imx/pm-imx6.c @@ -601,6 +601,28 @@ static void __init imx6_pm_common_init(const struct imx6_pm_socdata IMX6Q_GPR1_GINT); } +static void imx6_pm_stby_poweroff(void) +{ + imx6_set_lpm(STOP_POWER_OFF); + imx6q_suspend_finish(0); + + mdelay(1000); + + pr_emerg("Unable to poweroff system\n"); +} + +static int imx6_pm_stby_poweroff_probe(void) +{ + if (pm_power_off) { + pr_warn("%s: pm_power_off already claimed %p %pf!\n", + __func__, pm_power_off, pm_power_off); + return -EBUSY; + } + + pm_power_off = imx6_pm_stby_poweroff; + return 0; +} + void __init imx6_pm_ccm_init(const char *ccm_compat) { struct device_node *np; @@ -617,6 +639,9 @@ void __init imx6_pm_ccm_init(const char *ccm_compat) val = readl_relaxed(ccm_base + CLPCR); val &= ~BM_CLPCR_LPM; writel_relaxed(val, ccm_base + CLPCR); + + if (of_property_read_bool(np, "fsl,pmic-stby-poweroff")) + imx6_pm_stby_poweroff_probe(); } void __init imx6q_pm_init(void) From patchwork Thu Jul 26 09:22:17 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 10545453 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 682A8A635 for ; Thu, 26 Jul 2018 09:22:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 564782ADF6 for ; Thu, 26 Jul 2018 09:22:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 496242AF00; Thu, 26 Jul 2018 09:22:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BE32D2AECD for ; Thu, 26 Jul 2018 09:22:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729044AbeGZKi1 (ORCPT ); Thu, 26 Jul 2018 06:38:27 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:35201 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729053AbeGZKi1 (ORCPT ); Thu, 26 Jul 2018 06:38:27 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1ficTX-0002as-Qd; Thu, 26 Jul 2018 11:22:23 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1ficTV-0004WA-W2; Thu, 26 Jul 2018 11:22:21 +0200 From: Oleksij Rempel To: Shawn Guo , Mark Brown , "Rafael J. Wysocki" Cc: Oleksij Rempel , kernel@pengutronix.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Andrew Morton , Liam Girdwood , Leonard Crestez , Rob Herring , Mark Rutland , Michael Turquette , Stephen Boyd , Fabio Estevam , Russell King , linux-imx@nxp.com, yibin.gong@nxp.com, "A.s. Dong" Subject: [PATCH v8 3/6] kernel/reboot.c: export pm_power_off_prepare Date: Thu, 26 Jul 2018 11:22:17 +0200 Message-Id: <20180726092220.17250-4-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180726092220.17250-1-o.rempel@pengutronix.de> References: <20180726092220.17250-1-o.rempel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-clk@vger.kernel.org Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Export pm_power_off_prepare. It is needed to implement power off on Freescale/NXP iMX6 based boards with external power management integrated circuit (PMIC). Signed-off-by: Oleksij Rempel --- kernel/reboot.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/reboot.c b/kernel/reboot.c index e4ced883d8de..83810d726f3e 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -49,6 +49,7 @@ int reboot_force; */ void (*pm_power_off_prepare)(void); +EXPORT_SYMBOL_GPL(pm_power_off_prepare); /** * emergency_restart - reboot the system From patchwork Thu Jul 26 09:22:18 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 10545451 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 21A521822 for ; Thu, 26 Jul 2018 09:22:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 11B8A2ADF6 for ; Thu, 26 Jul 2018 09:22:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 04FF42AEE9; Thu, 26 Jul 2018 09:22:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 276B72ADF6 for ; Thu, 26 Jul 2018 09:22:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729056AbeGZKi0 (ORCPT ); Thu, 26 Jul 2018 06:38:26 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:44015 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728998AbeGZKi0 (ORCPT ); Thu, 26 Jul 2018 06:38:26 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1ficTX-0002at-Qe; Thu, 26 Jul 2018 11:22:23 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1ficTW-0004WK-0r; Thu, 26 Jul 2018 11:22:22 +0200 From: Oleksij Rempel To: Shawn Guo , Mark Brown , "Rafael J. Wysocki" Cc: Oleksij Rempel , kernel@pengutronix.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Andrew Morton , Liam Girdwood , Leonard Crestez , Rob Herring , Mark Rutland , Michael Turquette , Stephen Boyd , Fabio Estevam , Russell King , linux-imx@nxp.com, yibin.gong@nxp.com, "A.s. Dong" Subject: [PATCH v8 4/6] regulator: pfuze100: add fsl,pmic-stby-poweroff property Date: Thu, 26 Jul 2018 11:22:18 +0200 Message-Id: <20180726092220.17250-5-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180726092220.17250-1-o.rempel@pengutronix.de> References: <20180726092220.17250-1-o.rempel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-clk@vger.kernel.org Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Document the new optional "fsl,pmic-stby-poweroff" property. Signed-off-by: Oleksij Rempel Acked-by: Rob Herring --- Documentation/devicetree/bindings/regulator/pfuze100.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/regulator/pfuze100.txt b/Documentation/devicetree/bindings/regulator/pfuze100.txt index f0ada3b14d70..f3b922f5a11f 100644 --- a/Documentation/devicetree/bindings/regulator/pfuze100.txt +++ b/Documentation/devicetree/bindings/regulator/pfuze100.txt @@ -4,6 +4,13 @@ Required properties: - compatible: "fsl,pfuze100", "fsl,pfuze200", "fsl,pfuze3000" - reg: I2C slave address +Optional properties: +- fsl,pmic-stby-poweroff: if present, configure the PMIC to shutdown all + power rails when PMIC_STBY_REQ line is asserted during the power off sequence. + Use this option if the SoC should be powered off by external power + management IC (PMIC) on PMIC_STBY_REQ signal. + As opposite to PMIC_STBY_REQ boards can implement PMIC_ON_REQ signal. + Required child node: - regulators: This is the list of child nodes that specify the regulator initialization data for defined regulators. Please refer to below doc From patchwork Thu Jul 26 09:22:19 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 10545457 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A70E9A65F for ; Thu, 26 Jul 2018 09:22:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 941102ADF6 for ; Thu, 26 Jul 2018 09:22:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8764A2AEC3; Thu, 26 Jul 2018 09:22:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1490C2AEDA for ; Thu, 26 Jul 2018 09:22:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728957AbeGZKi1 (ORCPT ); Thu, 26 Jul 2018 06:38:27 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:58023 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728966AbeGZKi1 (ORCPT ); Thu, 26 Jul 2018 06:38:27 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1ficTX-0002au-Qa; Thu, 26 Jul 2018 11:22:23 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1ficTW-0004WU-1x; Thu, 26 Jul 2018 11:22:22 +0200 From: Oleksij Rempel To: Shawn Guo , Mark Brown , "Rafael J. Wysocki" Cc: Oleksij Rempel , kernel@pengutronix.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Andrew Morton , Liam Girdwood , Leonard Crestez , Rob Herring , Mark Rutland , Michael Turquette , Stephen Boyd , Fabio Estevam , Russell King , linux-imx@nxp.com, yibin.gong@nxp.com, "A.s. Dong" Subject: [PATCH v8 5/6] regulator: pfuze100-regulator: provide pm_power_off_prepare handler Date: Thu, 26 Jul 2018 11:22:19 +0200 Message-Id: <20180726092220.17250-6-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180726092220.17250-1-o.rempel@pengutronix.de> References: <20180726092220.17250-1-o.rempel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-clk@vger.kernel.org Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP On some boards the SoC can use one pin "PMIC_STBY_REQ" to notify th PMIC about state changes. In this case internal state of PMIC must be preconfigured for upcomming state change. It works fine with the current regulator framework, except with the power-off case. This patch is providing an optional pm_power_off_prepare handler which will configure standby state of the PMIC to disable all power lines. In my power consumption test on RIoTBoard, I got the following results: power off without this patch: 320 mA power off with this patch: 2 mA suspend to ram: 40 mA Signed-off-by: Oleksij Rempel --- drivers/regulator/pfuze100-regulator.c | 92 ++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) diff --git a/drivers/regulator/pfuze100-regulator.c b/drivers/regulator/pfuze100-regulator.c index 8d9dbcc775ea..e386e9acb3f7 100644 --- a/drivers/regulator/pfuze100-regulator.c +++ b/drivers/regulator/pfuze100-regulator.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #define PFUZE_NUMREGS 128 @@ -29,11 +30,17 @@ #define PFUZE100_COINVOL 0x1a #define PFUZE100_SW1ABVOL 0x20 +#define PFUZE100_SW1ABMODE 0x23 #define PFUZE100_SW1CVOL 0x2e +#define PFUZE100_SW1CMODE 0x31 #define PFUZE100_SW2VOL 0x35 +#define PFUZE100_SW2MODE 0x38 #define PFUZE100_SW3AVOL 0x3c +#define PFUZE100_SW3AMODE 0x3f #define PFUZE100_SW3BVOL 0x43 +#define PFUZE100_SW3BMODE 0x46 #define PFUZE100_SW4VOL 0x4a +#define PFUZE100_SW4MODE 0x4d #define PFUZE100_SWBSTCON1 0x66 #define PFUZE100_VREFDDRCON 0x6a #define PFUZE100_VSNVSVOL 0x6b @@ -44,6 +51,13 @@ #define PFUZE100_VGEN5VOL 0x70 #define PFUZE100_VGEN6VOL 0x71 +#define PFUZE100_SWxMODE_MASK 0xf +#define PFUZE100_SWxMODE_APS_APS 0x8 +#define PFUZE100_SWxMODE_APS_OFF 0x4 + +#define PFUZE100_VGENxLPWR BIT(6) +#define PFUZE100_VGENxSTBY BIT(5) + enum chips { PFUZE100, PFUZE200, PFUZE3000 = 3 }; struct pfuze_regulator { @@ -492,6 +506,69 @@ static inline struct device_node *match_of_node(int index) } #endif +static struct pfuze_chip *syspm_pfuze_chip; + +static void pfuze_power_off_prepare(void) +{ + dev_info(syspm_pfuze_chip->dev, "Configure standy mode for power off"); + + /* Switch from default mode: APS/APS to APS/Off */ + regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW1ABMODE, + PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF); + regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW1CMODE, + PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF); + regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW2MODE, + PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF); + regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW3AMODE, + PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF); + regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW3BMODE, + PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF); + regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW4MODE, + PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF); + + regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN1VOL, + PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY, + PFUZE100_VGENxSTBY); + regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN2VOL, + PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY, + PFUZE100_VGENxSTBY); + regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN3VOL, + PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY, + PFUZE100_VGENxSTBY); + regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN4VOL, + PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY, + PFUZE100_VGENxSTBY); + regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN5VOL, + PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY, + PFUZE100_VGENxSTBY); + regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN6VOL, + PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY, + PFUZE100_VGENxSTBY); +} + +static int pfuze_power_off_prepare_init(struct pfuze_chip *pfuze_chip) +{ + if (pfuze_chip->chip_id != PFUZE100) { + dev_warn(pfuze_chip->dev, "Requested pm_power_off_prepare handler for not supported chip\n"); + return -ENODEV; + } + + if (pm_power_off_prepare) { + dev_warn(pfuze_chip->dev, "pm_power_off_prepare is already registered.\n"); + return -EBUSY; + } + + if (syspm_pfuze_chip) { + dev_warn(pfuze_chip->dev, "syspm_pfuze_chip is already set.\n"); + return -EBUSY; + } + + syspm_pfuze_chip = pfuze_chip; + pm_power_off_prepare = pfuze_power_off_prepare; + + return 0; +} + static int pfuze_identify(struct pfuze_chip *pfuze_chip) { unsigned int value; @@ -661,6 +738,20 @@ static int pfuze100_regulator_probe(struct i2c_client *client, } } + if (of_property_read_bool(client->dev.of_node, + "fsl,pmic-stby-poweroff")) + return pfuze_power_off_prepare_init(pfuze_chip); + + return 0; +} + +static int pfuze100_regulator_remove(struct i2c_client *client) +{ + if (syspm_pfuze_chip) { + syspm_pfuze_chip = NULL; + pm_power_off_prepare = NULL; + } + return 0; } @@ -671,6 +762,7 @@ static struct i2c_driver pfuze_driver = { .of_match_table = pfuze_dt_ids, }, .probe = pfuze100_regulator_probe, + .remove = pfuze100_regulator_remove, }; module_i2c_driver(pfuze_driver); From patchwork Thu Jul 26 09:22:20 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 10545463 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DB8861822 for ; Thu, 26 Jul 2018 09:22:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C8F122ADF6 for ; Thu, 26 Jul 2018 09:22:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BCB682AEBF; Thu, 26 Jul 2018 09:22:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E7B9E2AED6 for ; Thu, 26 Jul 2018 09:22:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729053AbeGZKi1 (ORCPT ); Thu, 26 Jul 2018 06:38:27 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:45965 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728957AbeGZKi1 (ORCPT ); Thu, 26 Jul 2018 06:38:27 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1ficTX-0002av-QY; Thu, 26 Jul 2018 11:22:23 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1ficTW-0004Wf-33; Thu, 26 Jul 2018 11:22:22 +0200 From: Oleksij Rempel To: Shawn Guo , Mark Brown , "Rafael J. Wysocki" Cc: Oleksij Rempel , kernel@pengutronix.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Andrew Morton , Liam Girdwood , Leonard Crestez , Rob Herring , Mark Rutland , Michael Turquette , Stephen Boyd , Fabio Estevam , Russell King , linux-imx@nxp.com, yibin.gong@nxp.com, "A.s. Dong" Subject: [PATCH v8 6/6] ARM: dts: imx6: RIoTboard provide standby on power off option Date: Thu, 26 Jul 2018 11:22:20 +0200 Message-Id: <20180726092220.17250-7-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180726092220.17250-1-o.rempel@pengutronix.de> References: <20180726092220.17250-1-o.rempel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-clk@vger.kernel.org Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This board, as well as some other boards with i.MX6 and a PMIC, uses a "PMIC_STBY_REQ" line to notify the PMIC about a state change. The PMIC is programmed for a specific state change before triggering the line. In this case, PMIC_STBY_REQ can be used for stand by, sleep and power off modes. Signed-off-by: Oleksij Rempel --- arch/arm/boot/dts/imx6dl-riotboard.dts | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm/boot/dts/imx6dl-riotboard.dts b/arch/arm/boot/dts/imx6dl-riotboard.dts index 2e98c92adff7..a0e9753ee767 100644 --- a/arch/arm/boot/dts/imx6dl-riotboard.dts +++ b/arch/arm/boot/dts/imx6dl-riotboard.dts @@ -90,6 +90,10 @@ status = "okay"; }; +&clks { + fsl,pmic-stby-poweroff; +}; + &fec { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_enet>; @@ -170,6 +174,7 @@ reg = <0x08>; interrupt-parent = <&gpio5>; interrupts = <16 8>; + fsl,pmic-stby-poweroff; regulators { reg_vddcore: sw1ab { /* VDDARM_IN */