linux-kernel - [PATCH 4/5] drm/rockchip: dw_dp: Add DisplayPort support for rk3576

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Message-ID: <20260109080054.228671-5-andyshrk@163.com>
Date: Fri,  9 Jan 2026 16:00:47 +0800
From: Andy Yan <andyshrk@....com>
To: heiko@...ech.de,
	dmitry.baryshkov@....qualcomm.com
Cc: krzk+dt@...nel.org,
	conor+dt@...nel.org,
	cristian.ciocaltea@...labora.com,
	Laurent.pinchart@...asonboard.com,
	mripard@...nel.org,
	hjc@...k-chips.com,
	robh@...nel.org,
	sebastian.reichel@...labora.com,
	tzimmermann@...e.de,
	devicetree@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	Andy Yan <andy.yan@...k-chips.com>
Subject: [PATCH 4/5] drm/rockchip: dw_dp: Add DisplayPort support for rk3576

From: Andy Yan <andy.yan@...k-chips.com>

The DisplayPort of the RK3576 is basically the same as that of the
RK3588, but it operates in dual-pixel mode and also support MST.

This patch only enable the SST output now.

Signed-off-by: Andy Yan <andy.yan@...k-chips.com>
---

 drivers/gpu/drm/rockchip/dw_dp-rockchip.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/dw_dp-rockchip.c b/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
index 89d614d53596..dac3d202971e 100644
--- a/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
@@ -142,10 +142,18 @@ static const struct dw_dp_plat_data rk3588_dp_plat_data = {
 	.pixel_mode = DW_DP_MP_QUAD_PIXEL,
 };
 
+static const struct dw_dp_plat_data rk3576_dp_plat_data = {
+	.max_link_rate = 810000,
+	.pixel_mode = DW_DP_MP_DUAL_PIXEL,
+};
+
 static const struct of_device_id dw_dp_of_match[] = {
 	{
 		.compatible = "rockchip,rk3588-dp",
 		.data = &rk3588_dp_plat_data,
+	}, {
+		.compatible = "rockchip,rk3576-dp",
+		.data = &rk3576_dp_plat_data,
 	},
 	{}
 };
-- 
2.43.0