Commit 09e872d5 authored by chunhui dai's avatar chunhui dai Committed by Chun-Kuang Hu
Browse files

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: default avatarchunhui dai <chunhui.dai@mediatek.com>
Signed-off-by: default avatarFrank Wunderlich <frank-w@public-files.de>
Tested-by: default avatarFrank Wunderlich <frank-w@public-files.de>
Signed-off-by: default avatarChun-Kuang Hu <chunkuang.hu@kernel.org>
parent f89c696e

drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c

+1 −0
Original line number Diff line number Diff line
@@ -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,

drivers/phy/mediatek/phy-mtk-hdmi.c

+3 −0
Original line number Diff line number Diff line
@@ -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);

}

drivers/phy/mediatek/phy-mtk-hdmi.h

+1 −0
Original line number Diff line number Diff line
@@ -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);

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