Hi, Frank: Frank Wunderlich <linux@xxxxxxxxx> 於 2020年9月4日 週五 下午7:01寫道： > > From: chunhui dai <chunhui.dai@xxxxxxxxxxxx> > > Without that patch if you use specific resolutions like 1280x1024, > I can see distortion in the output. It seems as if the > frequency for updating the pixel of the image is out of sync. > > For initialization tmds needs to be active, but can be disabled after init > to fix blurry display As discussed with Jitao offline, he agree this patch, so I applied this patch to mediatek-drm-next [1], thanks. [1] https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/log/?h=mediatek-drm-next Regards, Chun-Kuang. > > Signed-off-by: chunhui dai <chunhui.dai@xxxxxxxxxxxx> > Signed-off-by: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx> > Tested-by: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx> > --- > drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c | 1 + > drivers/phy/mediatek/phy-mtk-hdmi.c | 3 +++ > drivers/phy/mediatek/phy-mtk-hdmi.h | 1 + > 3 files changed, 5 insertions(+) > > diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c b/drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c > index a6cb1dea3d0c..b74c65a1762c 100644 > --- a/drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c > +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c > @@ -238,6 +238,7 @@ static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy) > > struct mtk_hdmi_phy_conf mtk_hdmi_phy_2701_conf = { > .flags = CLK_SET_RATE_GATE, > + .pll_default_off = true, > .hdmi_phy_clk_ops = &mtk_hdmi_phy_pll_ops, > .hdmi_phy_enable_tmds = mtk_hdmi_phy_enable_tmds, > .hdmi_phy_disable_tmds = mtk_hdmi_phy_disable_tmds, > diff --git a/drivers/phy/mediatek/phy-mtk-hdmi.c b/drivers/phy/mediatek/phy-mtk-hdmi.c > index 8fc83f01a720..47c029d4b270 100644 > --- a/drivers/phy/mediatek/phy-mtk-hdmi.c > +++ b/drivers/phy/mediatek/phy-mtk-hdmi.c > @@ -184,6 +184,9 @@ static int mtk_hdmi_phy_probe(struct platform_device *pdev) > return PTR_ERR(phy_provider); > } > > + if (hdmi_phy->conf->pll_default_off) > + hdmi_phy->conf->hdmi_phy_disable_tmds(hdmi_phy); > + > return of_clk_add_provider(dev->of_node, of_clk_src_simple_get, > hdmi_phy->pll); > } > diff --git a/drivers/phy/mediatek/phy-mtk-hdmi.h b/drivers/phy/mediatek/phy-mtk-hdmi.h > index b13e1d5f8e78..dcf9bb13699b 100644 > --- a/drivers/phy/mediatek/phy-mtk-hdmi.h > +++ b/drivers/phy/mediatek/phy-mtk-hdmi.h > @@ -21,6 +21,7 @@ struct mtk_hdmi_phy; > > struct mtk_hdmi_phy_conf { > unsigned long flags; > + bool pll_default_off; > const struct clk_ops *hdmi_phy_clk_ops; > void (*hdmi_phy_enable_tmds)(struct mtk_hdmi_phy *hdmi_phy); > void (*hdmi_phy_disable_tmds)(struct mtk_hdmi_phy *hdmi_phy); > -- > 2.25.1 > > > _______________________________________________ > Linux-mediatek mailing list > Linux-mediatek@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-mediatek
