drm/mediatek: Disable tmds on mt2701
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
Signed-off-by: chunhui dai <chunhui.dai@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
diff --git a/drivers/phy/mediatek/phy-mtk-hdmi.c b/drivers/phy/mediatek/phy-mtk-hdmi.c
index 8fc83f0..47c029d 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);
}