diff --git a/drivers/misc/rk628/rk628.h b/drivers/misc/rk628/rk628.h
index 98605c0ea526..23945906415a 100644
--- a/drivers/misc/rk628/rk628.h
+++ b/drivers/misc/rk628/rk628.h
@@ -60,6 +60,10 @@
 #define GRF_GPIO_RXDDC_SDA_SEL(x)	UPDATE(x, 6, 6)
 #define GRF_GPIO_RXDDC_SCL_SEL_MASK	BIT(5)
 #define GRF_GPIO_RXDDC_SCL_SEL(x)	UPDATE(x, 5, 5)
+#define GRF_DPHY_CH1_EN_MASK		BIT(1)
+#define GRF_DPHY_CH1_EN(x)		UPDATE(x, 1, 1)
+#define GRF_AS_DSIPHY_MASK		BIT(0)
+#define GRF_AS_DSIPHY(x)		UPDATE(x, 0, 0)
 #define GRF_SCALER_CON0			0x0010
 #define SCL_VER_DOWN_MODE(x)		HIWORD_UPDATE(x, 8, 8)
 #define SCL_HOR_DOWN_MODE(x)		HIWORD_UPDATE(x, 7, 7)
diff --git a/drivers/misc/rk628/rk628_dsi.c b/drivers/misc/rk628/rk628_dsi.c
index 37c6b8237a06..012824cfdc39 100644
--- a/drivers/misc/rk628/rk628_dsi.c
+++ b/drivers/misc/rk628/rk628_dsi.c
@@ -1215,6 +1215,12 @@ void rk628_mipi_dsi_pre_enable(struct rk628 *rk628)
 	if (rk628->version == RK628F_VERSION) {
 		mask = SW_OUTPUT_COMBTX_MODE_MASK;
 		val = SW_OUTPUT_COMBTX_MODE(OUTPUT_MODE_DSI - 2);
+
+		rk628_i2c_update_bits(rk628, GRF_SYSTEM_CON3,
+				      GRF_DPHY_CH1_EN_MASK |
+				      GRF_AS_DSIPHY_MASK,
+				      (dsi->slave ? GRF_DPHY_CH1_EN(1) : 0) |
+				      GRF_AS_DSIPHY(1));
 	}
 
 	rk628_i2c_update_bits(rk628, GRF_SYSTEM_CON0, mask, val);