From patchwork Fri Jan 13 12:05:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 642131 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 2237CC54EBD for ; Fri, 13 Jan 2023 12:13:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241010AbjAMMNV (ORCPT ); Fri, 13 Jan 2023 07:13:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50052 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240987AbjAMMMQ (ORCPT ); Fri, 13 Jan 2023 07:12:16 -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 6B7587F47C for ; Fri, 13 Jan 2023 04:07:09 -0800 (PST) Received: by mail-lf1-x12f.google.com with SMTP id g13so32844877lfv.7 for ; Fri, 13 Jan 2023 04:07:09 -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=Hm/qQ8fRN2NQHjAQUuIDga+VQhSDIFkn6c2/qYNneiA=; b=ZFRatt/dxs5o0+wQkcz4uNvrDuRZmQTYPlToVfMr+7HTwl5EqQiKl7jPlkAV5mexc+ gt+8O9lsZfxTNqn7TLo8OKJkW+afnkuYOkFbNzF5/0keHyFucCBEuvJwtpnjgVlFChjf h6YGOmQTI06JeDucA8iWvSnVMg8QykjjEaEQ17TOMsLMPR03jGzTyCNxC7i5eHaXcrbK 6Ss17K0lc3n6wt1mZfjkzRVzO863pRC7VRFl/AjQJlJze+5jaCoeqio4f8ZclkXwm3as 9abAKWybrWoBelHzlO25LrhLZDA1Jz95/TBud2CNt2tQIPh23IZtCjf2e3byNynZQmAw 54CQ== 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=Hm/qQ8fRN2NQHjAQUuIDga+VQhSDIFkn6c2/qYNneiA=; b=x2bVy55hbc9vPf2OWNiXtw4uW1LUhxAwARY3uiJuCFfmd61FXT/z5QBwwFf5sKWUX7 4uUeCr7Zg9kF7mPt923BYB7Ry0B7NITz9WunUpYnuBcu9cn/slTps9hdw/LX805KG57f pZetOcTJBelAERMnbvvcrz1jQuf9xCHjsxLCVDttLlC2Y9xviYKAELctX0wHLjAKxpP2 aGbw1YD8eD0jeXCtp0ovzGTcS50bzXD4RCmfQL80oOhND5rfS/YSbnCPqsdK7jGeUCxr QtkL/ExwFGeJYI+UgI1qgiKkY8yZmDnHB9WUg8Mj57vv0dyvkSsa/DrMgA+Cj/ToMtGs Gp5A== X-Gm-Message-State: AFqh2kr9gODM+1/AuDF9+Es5k+CJa2/bNrXEqyJ7BKwXQIBuHOlPbO+f Lab0aEOeJGnFm8Im8U8yA0VomAAtfp9UfOV0bIG0VQ== X-Google-Smtp-Source: AMrXdXsBRAteX1m4WkeMuLekg73W6xuRSD8lqAflC3cp1BrQ+FO37EJXz6dTlWvKg/GS1z0NVctXIQ== X-Received: by 2002:a05:6512:1111:b0:4b5:43ef:a552 with SMTP id l17-20020a056512111100b004b543efa552mr24324909lfg.16.1673611629271; Fri, 13 Jan 2023 04:07:09 -0800 (PST) Received: from eriador.lumag.spb.ru ([188.170.82.205]) by smtp.gmail.com with ESMTPSA id i7-20020ac25227000000b004ac6a444b26sm3806290lfl.141.2023.01.13.04.07.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Jan 2023 04:07:08 -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 v3 06/14] clk: qcom: cpu-8996: skip ACD init if the setup is valid Date: Fri, 13 Jan 2023 14:05:36 +0200 Message-Id: <20230113120544.59320-7-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230113120544.59320-1-dmitry.baryshkov@linaro.org> References: <20230113120544.59320-1-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. Reviewed-by: Konrad Dybcio 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); }