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drm/msm/dsi: Enable runtime PM

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[ Upstream commit 6ab502bc1cf3147ea1d8540d04b83a7a4cb6d1f1 ]

Some devices power the DSI PHY/PLL through a power rail that we model
as a GENPD. Enable runtime PM to make it suspendable.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/543352/
Link: https://lore.kernel.org/r/20230620-topic-dsiphy_rpm-v2-2-a11a751f34f0@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Stable-dep-of: 3d07a411b4fa ("drm/msm/dsi: Use pm_runtime_resume_and_get to prevent refcnt leaks")
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Konrad Dybcio 2024-01-29 16:09:02 +05:30 committed by Greg Kroah-Hartman
parent fef59ee6c0
commit efdf644062
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
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@ -606,6 +606,10 @@ static int dsi_phy_driver_probe(struct platform_device *pdev)
goto fail;
}
ret = devm_pm_runtime_enable(&pdev->dev);
if (ret)
return ret;
/* PLL init will call into clk_register which requires
* register access, so we need to enable power and ahb clock.
*/