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

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@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230504160430.4014206-1-dmitry.baryshkov@linaro.org

diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
index e14fe9b..4dea2c0 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
@@ -419,6 +419,9 @@
        status = "okay";
        vdda-supply = <&vreg_l26a_1p2>;
 
+       qcom,dual-dsi-mode;
+       qcom,master-dsi;
+
        ports {
                port@1 {
                        endpoint {
@@ -434,6 +437,31 @@
        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 @@
                                };
                        };
 
+                       port@1 {
+                               reg = <1>;
+
+                               lt9611_b: endpoint {
+                                       remote-endpoint = <&dsi1_out>;
+                               };
+                       };
+
                        port@2 {
                                reg = <2>;