From patchwork Mon Jul 25 08:18:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Schneider-Pargmann X-Patchwork-Id: 12927867 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D2F96C433EF for ; Mon, 25 Jul 2022 08:20:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=rREHSjcfjpQHk4UrVZdBRlfSt+1lfTPjdekI0y3kZ04=; b=333GITHoOZy8yTxVSlyP0YrAxL wGknZr1S5yRhBRGSZ8ylBfPObAgK8D2ePP16Kqzb8BebF9B/dzeaqAkg5E8VsJQqgyAPz6M5WLdcA Jnp+jAYL3y4TocFlvtUxmCbC1kt9EodeD4x25fidF1L3k254axmb9JDMzewWqLlbZtNxalmZpilku AIkUSRC4802bnpbyWbzCAmnlDiOPUJTBcuE/o8/d55Xw7tZetTwXJw4P+z1f7uTLxX3CPhJBzVV9X bof/SR4g8cYpsgEYBW18TsWUYhtsaCxXJtiOTxCTafLt7MUKB2Q+UXfAxkl2ZmqUEYQYOvJ34St+9 YVz9H++A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oFtKB-006k0k-4B; Mon, 25 Jul 2022 08:20:23 +0000 Received: from mail-wm1-x32e.google.com ([2a00:1450:4864:20::32e]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oFtJ1-006j7g-P6 for linux-mediatek@lists.infradead.org; Mon, 25 Jul 2022 08:19:16 +0000 Received: by mail-wm1-x32e.google.com with SMTP id a18-20020a05600c349200b003a30de68697so7323445wmq.0 for ; Mon, 25 Jul 2022 01:19:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=rREHSjcfjpQHk4UrVZdBRlfSt+1lfTPjdekI0y3kZ04=; b=D56mAjLu+4DO0gYwFOIfTQoMPShxKAu9iqoLUzuAHDtYvr96HxZ4K8nWVi0emxOsdC GdOmL7lPLnAfs9ijm+KFBpT6tbGjfIZuapL0IxrUTXZ1V/o10UgD28U8tT70XTOPJdik fv5akro7XWCv7tF5D7GELbMONuk9HIBGFTZ3oLBMgVfQnX5qaagIMxyfnsiYuyBHHvFa bznbRwgn+gGqKgP1JxhjDVtw+2qcinXU7LuImk9iiRKU4iDX2DEt3T+SF2H0iYfPd8pI hkCNprZYObiZbtnZHTTRp0pS2SsI2xNWoTa/UTiDTz+dN/FNAPIf5W8jpuz/fRnjnTT7 wMjQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=rREHSjcfjpQHk4UrVZdBRlfSt+1lfTPjdekI0y3kZ04=; b=lTQATDZH6wJTiIFpbw1s+3EGBNfGY7kz6VF8jWdcy9IL31e518jHSpt3hUto36s4Bf A37IF0G2+jJbvQ+yKltIQEke6cpNcrAm1OAqm5t3h1bA40Fc/go33yKjBMlo6N8QHQW0 8/ZV2OZJKbMCTbKtDToOanpRl9kU6wcipeez14KzxZ3dlj5ZIpe13Y/ctmjg6bobiiLS 3dkgWiAFfXTko48KJsLDAQNJL90B39OVS6eitV7qc0MgADW0UplQWKP+GG0LT/SjCh8d zUWtUAUWwW+G8kYmu2uM6/XzgVs5Y+DrdQdcNLXua7H0LNeW9xsQ+N7WADgJYU1LYYf3 GP2g== X-Gm-Message-State: AJIora+gdDE+q17q3TTDkoM6Rh3yeYX8x9S08Ijs56+KroJvJvyP5l96 Wx9IiunYm+GsJhGTelW7lnn0ow== X-Google-Smtp-Source: AGRyM1vqDUKigQoG3ZcH0lsHrxYYImD6MOwA/s7sNlVJpsXootKiw4xE/A7jZKRVkC3sldrBKnN6rg== X-Received: by 2002:a05:600c:c6:b0:3a3:ea8:7995 with SMTP id u6-20020a05600c00c600b003a30ea87995mr7653425wmm.135.1658737150258; Mon, 25 Jul 2022 01:19:10 -0700 (PDT) Received: from blmsp.fritz.box ([2001:4090:a243:806e:25e7:daa:8208:ceb]) by smtp.gmail.com with ESMTPSA id x3-20020a05600c420300b003a3200bc788sm16695264wmh.33.2022.07.25.01.19.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Jul 2022 01:19:09 -0700 (PDT) From: Markus Schneider-Pargmann To: Rob Herring , Krzysztof Kozlowski , Matthias Brugger , Weiyi Lu Cc: Fabien Parent , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Alexandre Bailon , Fabien Parent , Markus Schneider-Pargmann Subject: [PATCH v2 2/4] soc: mediatek: Add support of WAY_EN operations Date: Mon, 25 Jul 2022 10:18:51 +0200 Message-Id: <20220725081853.1636444-3-msp@baylibre.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220725081853.1636444-1-msp@baylibre.com> References: <20220725081853.1636444-1-msp@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220725_011911_822894_C0DE485A X-CRM114-Status: GOOD ( 18.40 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Alexandre Bailon This updates the power domain to support WAY_EN operations. These operations enable a path between different units of the chip and are labeled as 'way_en' in the register descriptions. This operation is required by the mt8365 for the MM power domain. Signed-off-by: Alexandre Bailon Signed-off-by: Fabien Parent Signed-off-by: Markus Schneider-Pargmann --- Notes: Changes in v2: - some minor style fixes. - Renamed 'wayen' to 'way_en' to clarify the meaning - Updated commit message drivers/soc/mediatek/mtk-pm-domains.c | 64 +++++++++++++++++++++------ drivers/soc/mediatek/mtk-pm-domains.h | 28 +++++++----- 2 files changed, 68 insertions(+), 24 deletions(-) diff --git a/drivers/soc/mediatek/mtk-pm-domains.c b/drivers/soc/mediatek/mtk-pm-domains.c index 5ced254b082b..d0eae2227813 100644 --- a/drivers/soc/mediatek/mtk-pm-domains.c +++ b/drivers/soc/mediatek/mtk-pm-domains.c @@ -44,6 +44,7 @@ struct scpsys_domain { struct clk_bulk_data *subsys_clks; struct regmap *infracfg; struct regmap *smi; + struct regmap *infracfg_nao; struct regulator *supply; }; @@ -116,23 +117,38 @@ static int scpsys_sram_disable(struct scpsys_domain *pd) MTK_POLL_TIMEOUT); } -static int _scpsys_bus_protect_enable(const struct scpsys_bus_prot_data *bpd, struct regmap *regmap) +static int _scpsys_bus_protect_enable(const struct scpsys_bus_prot_data *bpd, + struct regmap *regmap, struct regmap *infracfg_nao) { int i, ret; for (i = 0; i < SPM_MAX_BUS_PROT_DATA; i++) { - u32 val, mask = bpd[i].bus_prot_mask; + u32 mask = bpd[i].bus_prot_mask; + u32 val = mask, sta_mask = mask; + struct regmap *ack_regmap = regmap; if (!mask) break; + if (bpd[i].way_en) { + if (!infracfg_nao) + return -ENODEV; + + val = 0; + sta_mask = bpd[i].bus_prot_sta_mask; + ack_regmap = infracfg_nao; + } + if (bpd[i].bus_prot_reg_update) - regmap_set_bits(regmap, bpd[i].bus_prot_set, mask); + regmap_update_bits(regmap, bpd[i].bus_prot_set, mask, val); else regmap_write(regmap, bpd[i].bus_prot_set, mask); - ret = regmap_read_poll_timeout(regmap, bpd[i].bus_prot_sta, - val, (val & mask) == mask, + if (bpd[i].ignore_clr_ack) + continue; + + ret = regmap_read_poll_timeout(ack_regmap, bpd[i].bus_prot_sta, + val, (val & sta_mask) == sta_mask, MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); if (ret) return ret; @@ -145,34 +161,49 @@ static int scpsys_bus_protect_enable(struct scpsys_domain *pd) { int ret; - ret = _scpsys_bus_protect_enable(pd->data->bp_infracfg, pd->infracfg); + ret = _scpsys_bus_protect_enable(pd->data->bp_infracfg, + pd->infracfg, pd->infracfg_nao); if (ret) return ret; - return _scpsys_bus_protect_enable(pd->data->bp_smi, pd->smi); + return _scpsys_bus_protect_enable(pd->data->bp_smi, pd->smi, NULL); } +#define mask_cond(way_en, val, mask) \ + ((way_en && ((val & mask) == mask)) || (!way_en && !(val & mask))) + static int _scpsys_bus_protect_disable(const struct scpsys_bus_prot_data *bpd, - struct regmap *regmap) + struct regmap *regmap, struct regmap *infracfg_nao) { int i, ret; for (i = SPM_MAX_BUS_PROT_DATA - 1; i >= 0; i--) { - u32 val, mask = bpd[i].bus_prot_mask; + u32 val = 0, mask = bpd[i].bus_prot_mask; + u32 sta_mask = mask; + struct regmap *ack_regmap = regmap; if (!mask) continue; + if (bpd[i].way_en) { + if (!infracfg_nao) + return -ENODEV; + + val = mask; + sta_mask = bpd[i].bus_prot_sta_mask; + ack_regmap = infracfg_nao; + } + if (bpd[i].bus_prot_reg_update) - regmap_clear_bits(regmap, bpd[i].bus_prot_clr, mask); + regmap_update_bits(regmap, bpd[i].bus_prot_clr, mask, val); else regmap_write(regmap, bpd[i].bus_prot_clr, mask); if (bpd[i].ignore_clr_ack) continue; - ret = regmap_read_poll_timeout(regmap, bpd[i].bus_prot_sta, - val, !(val & mask), + ret = regmap_read_poll_timeout(ack_regmap, bpd[i].bus_prot_sta, + val, mask_cond(bpd[i].way_en, val, sta_mask), MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); if (ret) return ret; @@ -185,11 +216,12 @@ static int scpsys_bus_protect_disable(struct scpsys_domain *pd) { int ret; - ret = _scpsys_bus_protect_disable(pd->data->bp_smi, pd->smi); + ret = _scpsys_bus_protect_disable(pd->data->bp_smi, pd->smi, NULL); if (ret) return ret; - return _scpsys_bus_protect_disable(pd->data->bp_infracfg, pd->infracfg); + return _scpsys_bus_protect_disable(pd->data->bp_infracfg, + pd->infracfg, pd->infracfg_nao); } static int scpsys_regulator_enable(struct regulator *supply) @@ -363,6 +395,10 @@ generic_pm_domain *scpsys_add_one_domain(struct scpsys *scpsys, struct device_no return ERR_CAST(pd->smi); } + pd->infracfg_nao = syscon_regmap_lookup_by_phandle_optional(node, "mediatek,infracfg_nao"); + if (IS_ERR(pd->infracfg_nao)) + return ERR_CAST(pd->infracfg_nao); + num_clks = of_clk_get_parent_count(node); if (num_clks > 0) { /* Calculate number of subsys_clks */ diff --git a/drivers/soc/mediatek/mtk-pm-domains.h b/drivers/soc/mediatek/mtk-pm-domains.h index daa24e890dd4..e788d6bdde9d 100644 --- a/drivers/soc/mediatek/mtk-pm-domains.h +++ b/drivers/soc/mediatek/mtk-pm-domains.h @@ -39,23 +39,29 @@ #define SPM_MAX_BUS_PROT_DATA 6 -#define _BUS_PROT(_mask, _set, _clr, _sta, _update, _ignore) { \ - .bus_prot_mask = (_mask), \ - .bus_prot_set = _set, \ - .bus_prot_clr = _clr, \ - .bus_prot_sta = _sta, \ - .bus_prot_reg_update = _update, \ - .ignore_clr_ack = _ignore, \ +#define _BUS_PROT(_mask, _sta_mask, _set, _clr, _sta, _update, _ignore, _way_en) { \ + .bus_prot_mask = (_mask), \ + .bus_prot_set = _set, \ + .bus_prot_clr = _clr, \ + .bus_prot_sta = _sta, \ + .bus_prot_sta_mask = _sta_mask, \ + .bus_prot_reg_update = _update, \ + .ignore_clr_ack = _ignore, \ + .way_en = _way_en, \ } #define BUS_PROT_WR(_mask, _set, _clr, _sta) \ - _BUS_PROT(_mask, _set, _clr, _sta, false, false) + _BUS_PROT(_mask, _mask, _set, _clr, _sta, false, false, false) #define BUS_PROT_WR_IGN(_mask, _set, _clr, _sta) \ - _BUS_PROT(_mask, _set, _clr, _sta, false, true) + _BUS_PROT(_mask, _mask, _set, _clr, _sta, false, true, false) #define BUS_PROT_UPDATE(_mask, _set, _clr, _sta) \ - _BUS_PROT(_mask, _set, _clr, _sta, true, false) + _BUS_PROT(_mask, _mask, _set, _clr, _sta, true, false, false) + +#define BUS_PROT_WAY_EN(_en_mask, _sta_mask, _set, _sta) \ + _BUS_PROT(_en_mask, _sta_mask, _set, _set, _sta, true, false, \ + true) #define BUS_PROT_UPDATE_TOPAXI(_mask) \ BUS_PROT_UPDATE(_mask, \ @@ -68,8 +74,10 @@ struct scpsys_bus_prot_data { u32 bus_prot_set; u32 bus_prot_clr; u32 bus_prot_sta; + u32 bus_prot_sta_mask; bool bus_prot_reg_update; bool ignore_clr_ack; + bool way_en; }; /**