linux-kernel - [PATCH v3 5/5] gpu/drm: mediatek: hdmi: add MT8167 configuration

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Date:   Mon, 19 Apr 2021 09:32:44 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     chunkuang.hu@...nel.org, p.zabel@...gutronix.de,
        matthias.bgg@...il.com
Cc:     dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Neil Armstrong <narmstrong@...libre.com>,
        Fabien Parent <fparent@...libre.com>
Subject: [PATCH v3 5/5] gpu/drm: mediatek: hdmi: add MT8167 configuration

The MT8167 SoC have a hard limit on the maximal supported HDMI TMDS clock,
and is not validated and supported for HDMI modes out of HDMI CEA modes,
so add a configuration entry linked to the MT8167 compatible.

Signed-off-by: Fabien Parent <fparent@...libre.com>
Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
---
 drivers/gpu/drm/mediatek/mtk_hdmi.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index bc50d97f2553..c1651a83700d 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -1787,10 +1787,18 @@ static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = {
 	.tz_disabled = true,
 };
 
+static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8167 = {
+	.max_mode_clock = 148500,
+	.cea_modes_only = true,
+};
+
 static const struct of_device_id mtk_drm_hdmi_of_ids[] = {
 	{ .compatible = "mediatek,mt2701-hdmi",
 	  .data = &mtk_hdmi_conf_mt2701,
 	},
+	{ .compatible = "mediatek,mt8167-hdmi",
+	  .data = &mtk_hdmi_conf_mt8167,
+	},
 	{ .compatible = "mediatek,mt8173-hdmi",
 	},
 	{}
-- 
2.25.1