linux-kernel - [PATCH v2 1/8] drm/rockchip: dsi: Add support for RK3368

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Message-Id: <20250905025632.222422-2-cn.liweihao@gmail.com>
Date: Fri,  5 Sep 2025 10:56:25 +0800
From: WeiHao Li <cn.liweihao@...il.com>
To: heiko@...ech.de,
	robh@...nel.org
Cc: hjc@...k-chips.com,
	andy.yan@...k-chips.com,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-clk@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	WeiHao Li <cn.liweihao@...il.com>
Subject: [PATCH v2 1/8] drm/rockchip: dsi: Add support for RK3368

RK3368 has DesignWare MIPI DSI controller and an external inno D-PHY.

Signed-off-by: WeiHao Li <cn.liweihao@...il.com>
---
 .../gpu/drm/rockchip/dw-mipi-dsi-rockchip.c   | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
index 5523911b9..de8405ee8 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
@@ -163,6 +163,11 @@
 #define RK3288_DSI0_LCDC_SEL		BIT(6)
 #define RK3288_DSI1_LCDC_SEL		BIT(9)
 
+#define RK3368_GRF_SOC_CON7		0x41c
+#define RK3368_DSI_FORCETXSTOPMODE	(0xf << 7)
+#define RK3368_DSI_FORCERXMODE		BIT(6)
+#define RK3368_DSI_TURNDISABLE		BIT(5)
+
 #define RK3399_GRF_SOC_CON20		0x6250
 #define RK3399_DSI0_LCDC_SEL		BIT(0)
 #define RK3399_DSI1_LCDC_SEL		BIT(4)
@@ -1528,6 +1533,18 @@ static const struct rockchip_dw_dsi_chip_data rk3288_chip_data[] = {
 	{ /* sentinel */ }
 };
 
+static const struct rockchip_dw_dsi_chip_data rk3368_chip_data[] = {
+	{
+		.reg = 0xff960000,
+		.lanecfg1_grf_reg = RK3368_GRF_SOC_CON7,
+		.lanecfg1 = FIELD_PREP_WM16_CONST((RK3368_DSI_TURNDISABLE |
+						RK3368_DSI_FORCETXSTOPMODE |
+						RK3368_DSI_FORCERXMODE), 0),
+		.max_data_lanes = 4,
+	},
+	{ /* sentinel */ }
+};
+
 static int rk3399_dphy_tx1rx1_init(struct phy *phy)
 {
 	struct dw_mipi_dsi_rockchip *dsi = phy_get_drvdata(phy);
@@ -1687,6 +1704,9 @@ static const struct of_device_id dw_mipi_dsi_rockchip_dt_ids[] = {
 	}, {
 	 .compatible = "rockchip,rk3288-mipi-dsi",
 	 .data = &rk3288_chip_data,
+	}, {
+	 .compatible = "rockchip,rk3368-mipi-dsi",
+	 .data = &rk3368_chip_data,
 	}, {
 	 .compatible = "rockchip,rk3399-mipi-dsi",
 	 .data = &rk3399_chip_data,
-- 
2.39.5