[PATCH v4 4/5] dt-bindings: display: Add Synaptics R63455 panel support

[Jun Nie <jun.nie@linaro.org>]

Add support for the dual-panel system found in the virtual reality device.
This system consists of two physical 2160x2160 panels, each connected via
a MIPI DSI interface. The backlight is managed through DSI link.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
---
 .../bindings/display/panel/synaptics,r63455.yaml   | 125 +++++++++++++++++++++
 1 file changed, 125 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/synaptics,r63455.yaml b/Documentation/devicetree/bindings/display/panel/synaptics,r63455.yaml
new file mode 100644
index 0000000000000..a94b355ed9557
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/synaptics,r63455.yaml
@@ -0,0 +1,125 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/synaptics,r63455.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Synaptics R63455 based dual 2160x2160 MIPI-DSI Panel
+
+maintainers:
+  - Jun Nie <jun.nie@linaro.org>
+
+description:
+  Synaptics R63455 is a Virtual Reality Display Driver and VR Bridge, used in
+  pair in Headset devices. The Virtual Reality Display complex is composed of
+  two strictly identical display panels, each driven by its own DSI interface
+  but forms a single virtual display for the human eye perception and thus
+  requires a strict synchronization of the two display panel content update.
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+        - sharp,ls026b3sa06
+        - boe,vs026c4m-n52-6000
+      - const: synaptics,r63455
+
+  reset-gpios:
+    maxItems: 2
+    description: 2 reset pins for 2 physical panels
+
+  left-pos-supply:
+    description: Positive 5.7V supply for left panel
+
+  right-pos-supply:
+    description: Positive 5.7V supply for right panel
+
+  left-neg-supply:
+    description: Negative 5.7V supply for left panel
+
+  right-neg-supply:
+    description: Negative 5.7V supply for right panel
+
+  left-backlight-supply:
+    description: Backlight 21V supply for left panel
+
+  right-backlight-supply:
+    description: Backlight 21V supply for right panel
+
+  vdda-supply:
+    description: core 1.8V supply for panels
+
+  ports: $ref: /schemas/graph.yaml#/properties/ports
+
+required:
+  - compatible
+  - reset-gpios
+  - left-pos-supply
+  - left-neg-supply
+  - right-pos-supply
+  - right-neg-supply
+  - left-backlight-supply
+  - right-backlight-supply
+  - vdda-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    &mdss_dsi0 {
+        vdda-supply = <&vreg_l3i_1p2>;
+        status = "okay";
+
+        qcom,dual-dsi-mode;
+        qcom,master-dsi;
+
+        panel: panel@0 {
+            compatible = "sharp,ls026b3sa06", "synaptics,r63455";
+            reg = <0>;
+
+            reset-gpios = <&pm8550_gpios 3 GPIO_ACTIVE_HIGH>,
+                          <&pm8550_gpios 11 GPIO_ACTIVE_HIGH>;
+
+            left-pos-supply = <&vpos_left>;
+            left-neg-supply = <&vneg_left>;
+            right-pos-supply = <&vpos_right>;
+            right-neg-supply = <&vneg_right>;
+            left-backlight-supply = <&backlight_left>;
+            right-backlight-supply = <&backlight_right>;
+
+            vdda-supply = <&vreg_l12b_1p8>;
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                port@0 {
+                    reg = <0>;
+                    panel0_in: endpoint {
+                        remote-endpoint = <&mdss_dsi0_out>;
+                    };
+                };
+
+                port@1 {
+                    reg = <1>;
+                    panel1_in: endpoint {
+                        remote-endpoint = <&mdss_dsi1_out>;
+                    };
+                };
+            };
+    };
+
+    &mdss_dsi0_out {
+            remote-endpoint = <&panel0_in>;
+            data-lanes = <0 1 2>;
+    };
+
+    &mdss_dsi1_out {
+            remote-endpoint = <&panel1_in>;
+            data-lanes = <0 1 2>;
+    };
+...

-- 
2.43.0