Commit 7bbaac2d authored by Konrad Dybcio's avatar Konrad Dybcio Committed by sanglipeng1
Browse files

drm/msm/dsi: Enable runtime PM 

stable inclusion
from stable-v5.10.210
commit 67f386f75637f25df714d57a48f6c94b83573631
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/IAE52H

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=67f386f75637f25df714d57a48f6c94b83573631



--------------------------------

[ 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: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: default avatarDmitry 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: default avatarDmitry 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: default avatarAmit Pundir <amit.pundir@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarsanglipeng1 <sanglipeng1@jd.com>
parent c9ff8a7f

drivers/gpu/drm/msm/dsi/phy/dsi_phy.c

+4 −0
Original line number Diff line number Diff line
@@ -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.

	 */