Commit 2a541abd authored by Konrad Dybcio's avatar Konrad Dybcio Committed by Bjorn Andersson
Browse files

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: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230619-topic-sc8280xp-clk-rpm-v1-2-1e5e1064cdb2@linaro.org


Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
parent 9bbcb892

drivers/clk/qcom/gcc-sc8280xp.c

+16 −2
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/of_device.h>

#include <linux/pm_runtime.h>

#include <linux/of.h>

#include <linux/regmap.h>
@@ -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[] = {