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@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20250905025632.222422-2-cn.liweihao@gmail.com

diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
index 5523911b990d93aa5b8a28acb8ffa01298c4a3b7..de8405ee82418365e70acd6023193a09f1e7adc6 100644 (file)
--- 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,