Hi, Bo-Chen: On Fri, 2022-07-01 at 11:58 +0800, Bo-Chen Chen wrote: > From: Guillaume Ranquet <granquet@xxxxxxxxxxxx> > > Enabling the dpi too early causes glitches on screen. > > Move the call to mtk_dpi_enable() at the end of the bridge_enable > callback to ensure everything is setup properly before enabling dpi. Applied to mediatek-drm-next [1], thanks. [1] https://urldefense.com/v3/__https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/log/?h=mediatek-drm-next__;!!CTRNKA9wMg0ARbw!zWEwCacmscK6lKiUsSJg-EhOk-w28LbLdjhkF_xNfenUSrdS0RCxyNYy1_Rq5Q$ Regards, CK > > Fixes: 9e629c17aa8d ("drm/mediatek: Add DPI sub driver") > Signed-off-by: Guillaume Ranquet <granquet@xxxxxxxxxxxx> > Signed-off-by: Bo-Chen Chen <rex-bc.chen@xxxxxxxxxxxx> > Tested-by: AngeloGioacchino Del Regno < > angelogioacchino.delregno@xxxxxxxxxxxxx> > --- > drivers/gpu/drm/mediatek/mtk_dpi.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c > b/drivers/gpu/drm/mediatek/mtk_dpi.c > index a65b85c4c8d5..be039474cf26 100644 > --- a/drivers/gpu/drm/mediatek/mtk_dpi.c > +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c > @@ -513,7 +513,6 @@ static int mtk_dpi_power_on(struct mtk_dpi *dpi) > if (dpi->pinctrl && dpi->pins_dpi) > pinctrl_select_state(dpi->pinctrl, dpi->pins_dpi); > > - mtk_dpi_enable(dpi); > return 0; > > err_pixel: > @@ -734,6 +733,7 @@ static void mtk_dpi_bridge_enable(struct > drm_bridge *bridge) > > mtk_dpi_power_on(dpi); > mtk_dpi_set_display_mode(dpi, &dpi->mode); > + mtk_dpi_enable(dpi); > } > > static enum drm_mode_status
