[PATCH] arm64: dts: qcom: enable dual ("bonded") DSI mode for DB845c

[Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>]

Now as both lt9611 and drm/msm drivers were updated to handle the 4k
modes over DSI, enable "bonded" DSI mode on DB845c. This way the board
utilizes both DSI links and thus can support 4k on the HDMI output.

Cc: Amit Pundir <amit.pundir@xxxxxxxxxx>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 36 ++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
index e14fe9bbb386..4dea2c04b22f 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
@@ -419,6 +419,9 @@ &dsi0 {
 	status = "okay";
 	vdda-supply = <&vreg_l26a_1p2>;
 
+	qcom,dual-dsi-mode;
+	qcom,master-dsi;
+
 	ports {
 		port@1 {
 			endpoint {
@@ -434,6 +437,31 @@ &dsi0_phy {
 	vdds-supply = <&vreg_l1a_0p875>;
 };
 
+&dsi1 {
+	vdda-supply = <&vreg_l26a_1p2>;
+
+	qcom,dual-dsi-mode;
+
+	/* DSI1 is slave, so use DSI0 clocks */
+	assigned-clock-parents = <&dsi0_phy 0>, <&dsi0_phy 1>;
+
+	status = "okay";
+
+	ports {
+		port@1 {
+			endpoint {
+				remote-endpoint = <&lt9611_b>;
+				data-lanes = <0 1 2 3>;
+			};
+		};
+	};
+};
+
+&dsi1_phy {
+	vdds-supply = <&vreg_l1a_0p875>;
+	status = "okay";
+};
+
 &gcc {
 	protected-clocks = <GCC_QSPI_CORE_CLK>,
 			   <GCC_QSPI_CORE_CLK_SRC>,
@@ -493,6 +521,14 @@ lt9611_a: endpoint {
 				};
 			};
 
+			port@1 {
+				reg = <1>;
+
+				lt9611_b: endpoint {
+					remote-endpoint = <&dsi1_out>;
+				};
+			};
+
 			port@2 {
 				reg = <2>;
 
-- 
2.39.2