From 2a541abd98370f9931c889c187eef7458720b57b Mon Sep 17 00:00:00 2001 From: Konrad Dybcio Date: Mon, 19 Jun 2023 18:13:18 +0200 Subject: clk: qcom: gcc-sc8280xp: Add runtime PM 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 Link: https://lore.kernel.org/r/20230619-topic-sc8280xp-clk-rpm-v1-2-1e5e1064cdb2@linaro.org Signed-off-by: Bjorn Andersson --- drivers/clk/qcom/gcc-sc8280xp.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'drivers/clk') diff --git a/drivers/clk/qcom/gcc-sc8280xp.c b/drivers/clk/qcom/gcc-sc8280xp.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 @@ -7421,9 +7422,19 @@ static int gcc_sc8280xp_probe(struct platform_device *pdev) struct regmap *regmap; int ret; + ret = devm_pm_runtime_enable(&pdev->dev); + if (ret) + return ret; + + ret = pm_runtime_resume_and_get(&pdev->dev); + if (ret) + return ret; + regmap = qcom_cc_map(pdev, &gcc_sc8280xp_desc); - if (IS_ERR(regmap)) + if (IS_ERR(regmap)) { + pm_runtime_put(&pdev->dev); return PTR_ERR(regmap); + } /* * Keep the clocks always-ON @@ -7445,7 +7456,10 @@ static int gcc_sc8280xp_probe(struct platform_device *pdev) if (ret) return ret; - return qcom_cc_really_probe(pdev, &gcc_sc8280xp_desc, regmap); + ret = qcom_cc_really_probe(pdev, &gcc_sc8280xp_desc, regmap); + pm_runtime_put(&pdev->dev); + + return ret; } static const struct of_device_id gcc_sc8280xp_match_table[] = { -- cgit v1.2.3