On Dienstag, 30. Jänner 2024 14:46:47 CET Amit Pundir wrote: > From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> > > [ 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@xxxxxxxxxx> > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> > Patchwork: https://patchwork.freedesktop.org/patch/543352/ > Link: > https://lore.kernel.org/r/20230620-topic-dsiphy_rpm-v2-2-a11a751f34f0@linar > o.org Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> > Stable-dep-of: 3d07a411b4fa ("drm/msm/dsi: Use pm_runtime_resume_and_get to > prevent refcnt leaks") Signed-off-by: Amit Pundir <amit.pundir@xxxxxxxxxx> > --- > Fixes display regression on DB845c running v6.1.75, v6.6.14 and v6.7.2. Can confirm this fixes display on qcom-msm8226 on v6.7.2. Not sure if it's appropriate for -stable but: Tested-by: Luca Weiss <luca@xxxxxxxxx> Regards Luca > > drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c > b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c index 62bc3756f2e2..c0bcf020ef66 > 100644 > --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c > +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c > @@ -673,6 +673,10 @@ static int dsi_phy_driver_probe(struct platform_device > *pdev) return dev_err_probe(dev, PTR_ERR(phy->ahb_clk), > "Unable to get ahb clk\n"); > > + 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. > */
