From patchwork Wed Jan 11 20:01:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 641305 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 E66AFC5479D for ; Wed, 11 Jan 2023 20:05:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239669AbjAKUF2 (ORCPT ); Wed, 11 Jan 2023 15:05:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35200 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236026AbjAKUFB (ORCPT ); Wed, 11 Jan 2023 15:05:01 -0500 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 6ECBB43D89 for ; Wed, 11 Jan 2023 12:01:34 -0800 (PST) Received: by mail-lf1-x12f.google.com with SMTP id d30so20301753lfv.8 for ; Wed, 11 Jan 2023 12:01:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; 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=UcTrQNFFbWCL7GgAo7RNP0TzY01GvFcQgkQKLT8ew64=; b=GvnUTovdSaH2y/t2hZgjAMqhy0bL8GpaM2GmZ7CRWjrVpGkVO7YZGCrV2S0bH5/x4R h2YAWuD6xrgAZBG+j+7Dhjb9nmz+YSdRgkUgjApy2zaz+uJJu5Vd0YRm+WIONodwtRpE 7qMrgDab9BAKeROCPZfv2Ty5Tgic/tLqewdIJDGtBAjxLyuaEi8xa/5Y7b6zL2LoCop7 SMKRX72A+2bVNNFJgrmaXYXfwtkaDGKFG+zz9tEzs2yb5MrKuvhr0J81OtfESfHz2Gnr rA0XSDxGmmWQS+E1+iyIGt4bUMo8Qu7Hjg3+273ahAJfXlfzYff1NWmmz/pGbs8pmAya 4Z9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=UcTrQNFFbWCL7GgAo7RNP0TzY01GvFcQgkQKLT8ew64=; b=GWSugo//4imrOoz3B7Qf5pqRmTPCVYb0cDPVJccSbBuQUGYwuUkeea9zxbZuzBm9ou GyYi+g7TwzzHRzungoSaWTCDgJTRhreG5XHLc02k7a/3RchORn9FLHfIJcjTT/hI9Wfk te8rE3Jx/Hn6Chtpd/4kGojuynK78HXkbVhSz2fpg0jg+kwRctHMeT3ZdqEzp8hz6j9b G59nmxD4uX8M+MwUwi2P5VyObbhL4PMf/UQg2X69ogZS2Bim03+ALf3+CAeUxNS7u5l7 OcrbwMALlqeH/NeJeP5xpTU7Ab4tu4jIAgCqPyEyH1WV5lKZc8VG68FJT8PCR7WmLO9/ 11eg== X-Gm-Message-State: AFqh2kpAmSUkcYxi6AW5IigyirCDzJf1QuUVBdBXZ4ZZLVjHU5g5e/ds ocSOHinlCAN+5zOAsTZ8G9Sw/w== X-Google-Smtp-Source: AMrXdXu0iCRkiiReh19/Xr0H079pJ0g71zSpaJfuuYIcqiIji5/Tx9DsEseAgyhkwDvwR//d+1WMfA== X-Received: by 2002:ac2:5df2:0:b0:4aa:7821:8021 with SMTP id z18-20020ac25df2000000b004aa78218021mr24329911lfq.34.1673467293337; Wed, 11 Jan 2023 12:01:33 -0800 (PST) Received: from umbar.unikie.fi ([192.130.178.91]) by smtp.gmail.com with ESMTPSA id v20-20020a05651203b400b004b4e6dab30esm2881437lfp.222.2023.01.11.12.01.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Jan 2023 12:01:32 -0800 (PST) From: Dmitry Baryshkov To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Stephen Boyd , Michael Turquette , Rob Herring , Krzysztof Kozlowski , Taniya Das Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v2 06/14] clk: qcom: cpu-8996: skip ACD init if the setup is valid Date: Wed, 11 Jan 2023 23:01:20 +0300 Message-Id: <20230111200128.2593359-7-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230111200128.2593359-1-dmitry.baryshkov@linaro.org> References: <20230111200128.2593359-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Check whether L2 registers contain correct values and skip programming if they are valid. This follows the code present downstream. Signed-off-by: Dmitry Baryshkov --- drivers/clk/qcom/clk-cpu-8996.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/clk/qcom/clk-cpu-8996.c b/drivers/clk/qcom/clk-cpu-8996.c index 0e0c00d44c6f..7e5246ca7e7f 100644 --- a/drivers/clk/qcom/clk-cpu-8996.c +++ b/drivers/clk/qcom/clk-cpu-8996.c @@ -472,10 +472,15 @@ static void __iomem *base; static void qcom_cpu_clk_msm8996_acd_init(void __iomem *base) { u64 hwid; + u32 val; unsigned long flags; spin_lock_irqsave(&qcom_clk_acd_lock, flags); + val = kryo_l2_get_indirect_reg(L2ACDTD_REG); + if (val == 0x00006a11) + goto out; + hwid = read_cpuid_mpidr() & CPU_AFINITY_MASK; kryo_l2_set_indirect_reg(L2ACDTD_REG, 0x00006a11); @@ -492,6 +497,7 @@ static void qcom_cpu_clk_msm8996_acd_init(void __iomem *base) writel(0xf, base + PERFCL_REG_OFFSET + SSSCTL_OFFSET); } +out: spin_unlock_irqrestore(&qcom_clk_acd_lock, flags); }