From patchwork Fri May 26 18:07:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yassine Oudjana X-Patchwork-Id: 686276 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D5990C7EE2F for ; Fri, 26 May 2023 18:07:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242986AbjEZSH6 (ORCPT ); Fri, 26 May 2023 14:07:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59222 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242167AbjEZSHv (ORCPT ); Fri, 26 May 2023 14:07:51 -0400 Received: from mail-ej1-x62b.google.com (mail-ej1-x62b.google.com [IPv6:2a00:1450:4864:20::62b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BACAF13A; Fri, 26 May 2023 11:07:49 -0700 (PDT) Received: by mail-ej1-x62b.google.com with SMTP id a640c23a62f3a-969f90d71d4so145760966b.3; Fri, 26 May 2023 11:07:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685124468; x=1687716468; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=1WNhXWuAHGSvY84FPzjUJiY/WdxRG1SooFMStX8dS0s=; b=p076qqBSbmH95CyWYwmxDLH1EofZTcSiQwfiZ/E2g+jrabSJlxYZAL8tW5SovUU0kl yLBT6ySFrxmU6QBCoG+/w9wNaXrhM6kSFDav/FoWx57bbKxeMC0zSf+jgfbdaSbCA3D0 +yyffE5niZ+54MJDvnh3PdrOH51yGAGIzB7/3QNQ9Vr4IUFQ35ESQj8Z0XaViynvnlxD 43tGsEqpLFaW5vnMFYkdhgIpzXE9nJHz7Om8Y+Iqbjhb0JIWkbGOT0+QPUmAH3MS0mdT RRtORElzNkNcV286rOehX3U5leti+tVt6mhHQOhvu8Sgf3XWJhh3VUoBFjV2kKEfDLBo A1/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685124468; x=1687716468; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=1WNhXWuAHGSvY84FPzjUJiY/WdxRG1SooFMStX8dS0s=; b=bpDjAZWzNOc4UTHUQw0kolOpZDMWgOVOiyQgBt9p8Zaf0BIemJLHoAjPy6mEgfkDLi GCrgD/OjBTNu+7Wy3z+vspT8o4Ma/swLS6rU3orcX/jlPBmXVtIzWtazHwhtZm8MmzvE uFVnbt5UM1earM+LeR2y2fQNmwtQGDiPBemZWPyZ6U0cE5QEpl5PvDcGjTUmrugH3sJp FwOx5ZVJd3G6COzuUOnO5Ss3wi/F/gk6oFKTlkRkLs9CWSXDsfHGNr3LPp/ZCEuZN3fA jaIZ0llFENbv5+xIpL7tugR4c9VuqqackLlPeLk5GbwZ5f/9sSX6erAL9lkmTS1PmCfg yjcg== X-Gm-Message-State: AC+VfDxziYzqVdUNNLoC9bmCypCIMneM+k178mf5wpBCxbDsrh+0CfPf tPpV+wi31qNMDQ4ZaSNAmz8= X-Google-Smtp-Source: ACHHUZ7wPGY8XaZ5Q26iK1pWupLRHG9OW5fzWVth17mX8oMMlY9eqhpM3UjCV5KozN8rgYMknhXCcA== X-Received: by 2002:a17:907:a40d:b0:968:1102:1fb7 with SMTP id sg13-20020a170907a40d00b0096811021fb7mr2680886ejc.6.1685124468084; Fri, 26 May 2023 11:07:48 -0700 (PDT) Received: from localhost.localdomain ([95.183.227.33]) by smtp.gmail.com with ESMTPSA id j11-20020a170906410b00b0096f689848desm2410823ejk.195.2023.05.26.11.07.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 May 2023 11:07:47 -0700 (PDT) From: Yassine Oudjana X-Google-Original-From: Yassine Oudjana To: Robert Foss , Todor Tomov , "Bryan O'Donoghue" , Andy Gross , Bjorn Andersson , Konrad Dybcio , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Hans Verkuil Cc: Yassine Oudjana , Yassine Oudjana , Vladimir Zapolskiy , linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 3/3] media: camss: Link CAMSS power domain Date: Fri, 26 May 2023 21:07:12 +0300 Message-Id: <20230526180712.8481-4-y.oudjana@protonmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230526180712.8481-1-y.oudjana@protonmail.com> References: <20230526180712.8481-1-y.oudjana@protonmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Yassine Oudjana The CAMSS power domain was previously enabled implicitly when the VFE power domains were enabled. Commit 46cc03175498 ("media: camss: Split power domain management") delayed enabling VFE power domains which in turn delayed enabling the CAMSS power domain. This made CSIPHY fail to enable camss_top_ahb_clk which requires the CAMSS power domain to be on: [ 199.097810] ------------[ cut here ]------------ [ 199.097893] camss_top_ahb_clk status stuck at 'off' [ 199.097913] WARNING: CPU: 3 PID: 728 at drivers/clk/qcom/clk-branch.c:91 clk_branch_wait+0x140/0x160 ... [ 199.100064] clk_branch_wait+0x140/0x160 [ 199.100112] clk_branch2_enable+0x30/0x40 [ 199.100159] clk_core_enable+0x6c/0xb0 [ 199.100211] clk_enable+0x2c/0x50 [ 199.100257] camss_enable_clocks+0x94/0xe0 [qcom_camss] [ 199.100342] csiphy_set_power+0x154/0x2a0 [qcom_camss] ... [ 199.101594] ---[ end trace 0000000000000000 ]--- Link the CAMSS power domain in camss_configure_pd to make sure it gets enabled before CSIPHY tries to enable clocks. Fixes: 02afa816dbbf ("media: camss: Add basic runtime PM support") Signed-off-by: Yassine Oudjana --- drivers/media/platform/qcom/camss/camss.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c index 1ef26aea3eae..9aea8220d923 100644 --- a/drivers/media/platform/qcom/camss/camss.c +++ b/drivers/media/platform/qcom/camss/camss.c @@ -1453,6 +1453,7 @@ static const struct media_device_ops camss_media_ops = { static int camss_configure_pd(struct camss *camss) { struct device *dev = camss->dev; + int camss_pd_index; int i; int ret; @@ -1496,7 +1497,13 @@ static int camss_configure_pd(struct camss *camss) } } - if (i > camss->vfe_num) { + /* Link CAMSS power domain if available */ + camss_pd_index = device_property_match_string(camss->dev, "power-domain-names", "camss"); + if (camss_pd_index >= 0) + device_link_add(camss->dev, camss->genpd[camss_pd_index], DL_FLAG_STATELESS | + DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE); + + if (i > camss->vfe_num && i != camss_pd_index) { camss->genpd_link[i - 1] = device_link_add(camss->dev, camss->genpd[i - 1], DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE);