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[83.9.31.242]) by smtp.gmail.com with ESMTPSA id x20-20020a2e7c14000000b002b471efb253sm1011714ljc.46.2023.06.19.09.13.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jun 2023 09:13:24 -0700 (PDT) From: Konrad Dybcio Date: Mon, 19 Jun 2023 18:13:18 +0200 Subject: [PATCH 2/2] clk: qcom: gcc-sc8280xp: Add runtime PM MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20230619-topic-sc8280xp-clk-rpm-v1-2-1e5e1064cdb2@linaro.org> References: <20230619-topic-sc8280xp-clk-rpm-v1-0-1e5e1064cdb2@linaro.org> In-Reply-To: <20230619-topic-sc8280xp-clk-rpm-v1-0-1e5e1064cdb2@linaro.org> To: Andy Gross , Bjorn Andersson , Michael Turquette , Stephen Boyd Cc: Marijn Suijten , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Konrad Dybcio X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1687191201; l=1628; i=konrad.dybcio@linaro.org; s=20230215; h=from:subject:message-id; bh=iLOsinGTJtv8sPDkEM7a2zWDxDnO0K1p+yOFG6UU878=; b=7gTXtpfYHcJ+0pwGRH82J2GexETpGG26Gyb/o04zQKY9qD5wnd1s78SdNgclCurw05CB4RlMi lEdx/i0XRbsDjfQmEAqtdOzVf3WwIQRHifziP649VUBKp7lkQLL5FK5 X-Developer-Key: i=konrad.dybcio@linaro.org; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The GCC block on SC8280XP is powered by the CX rail. We need to ensure that it's enabled to prevent unwanted power collapse. Enable runtime PM to keep the power flowing only when necessary. Signed-off-by: Konrad Dybcio --- drivers/clk/qcom/gcc-sc8280xp.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/drivers/clk/qcom/gcc-sc8280xp.c b/drivers/clk/qcom/gcc-sc8280x= p.c index 04a99dbaa57e..b90c71637814 100644 --- a/drivers/clk/qcom/gcc-sc8280xp.c +++ b/drivers/clk/qcom/gcc-sc8280xp.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include =20 @@ -7421,9 +7422,19 @@ static int gcc_sc8280xp_probe(struct platform_device= *pdev) struct regmap *regmap; int ret; =20 + ret =3D devm_pm_runtime_enable(&pdev->dev); + if (ret) + return ret; + + ret =3D pm_runtime_resume_and_get(&pdev->dev); + if (ret) + return ret; + regmap =3D qcom_cc_map(pdev, &gcc_sc8280xp_desc); - if (IS_ERR(regmap)) + if (IS_ERR(regmap)) { + pm_runtime_put(&pdev->dev); return PTR_ERR(regmap); + } =20 /* * Keep the clocks always-ON @@ -7445,7 +7456,10 @@ static int gcc_sc8280xp_probe(struct platform_device= *pdev) if (ret) return ret; =20 - return qcom_cc_really_probe(pdev, &gcc_sc8280xp_desc, regmap); + ret =3D qcom_cc_really_probe(pdev, &gcc_sc8280xp_desc, regmap); + pm_runtime_put(&pdev->dev); + + return ret; } =20 static const struct of_device_id gcc_sc8280xp_match_table[] =3D { --=20 2.41.0