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UPSTREAM: 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>
Change-Id: I9f1a28e7c47c394fe7200826627a5373455f3826
This commit is contained in:
Konrad Dybcio 2023-06-20 13:43:21 +02:00 committed by Amit Pundir
parent 5a2e61dcbd
commit 6f5d6d6de5
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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@ -710,6 +710,10 @@ 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.
*/