[PATCH v1 1/2] dt-bindings: arm: qcom: Add waveshare MIPI-DSI panels support

[Sudarshan Shetty <tessolveupstream@gmail.com>]

Device tree bindings for Waveshare MIPI-DSI panels
of various sizes (5.0, 5.5, 7.0, 8.0, and 10.1).
These panels require proper power sequencing via an external
regulator and a backlight node for brightness control.

Signed-off-by: Sudarshan Shetty <tessolveupstream@gmail.com>
---
 .../display/panel/waveshare,dsi-panel.yaml    | 84 +++++++++++++++++++
 ...waveshare,touchscreen-panel-regulator.yaml | 72 ++++++++++++++++
 2 files changed, 156 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/panel/waveshare,dsi-panel.yaml
 create mode 100644 Documentation/devicetree/bindings/regulator/waveshare,touchscreen-panel-regulator.yaml

diff --git a/Documentation/devicetree/bindings/display/panel/waveshare,dsi-panel.yaml b/Documentation/devicetree/bindings/display/panel/waveshare,dsi-panel.yaml
new file mode 100644
index 000000000000..a42ce065124f
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/waveshare,dsi-panel.yaml
@@ -0,0 +1,84 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/waveshare,dsi-panel.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Waveshare 10.1" DSI Touch Display Panel
+
+maintainers:
+  - Sudarshan Shetty <tessolveupstream@gmail.com>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - waveshare,12.3-dsi-touch-a,4lane
+      - waveshare,10.1-dsi-touch-a
+      - waveshare,10.1-dsi-touch-a-4lane
+      - waveshare,10.1-dsi-touch-b
+      - waveshare,10.1-dsi-touch-b,4lane
+      - waveshare,9.0-dsi-touch-b
+      - waveshare,9.0-dsi-touch-b,4lane
+      - waveshare,8.8-dsi-touch-a
+      - waveshare,8.0-dsi-touch-a
+      - waveshare,8.0-dsi-touch-a-4lane
+      - waveshare,7.0-dsi-touch-a
+      - waveshare,7.0-dsi-touch-b
+      - waveshare,5.5-dsi-touch-a
+      - waveshare,5.0-dsi-touch-a
+      - waveshare,4.0-dsi-touch-c
+      - waveshare,3.4-dsi-touch-c
+
+  reg:
+    description: DSI virtual channel
+    maxItems: 1
+
+  vdd-supply:
+    description: Power supply regulator for the panel
+
+  reset-gpios:
+    maxItems: 1
+    description: GPIO to control panel reset
+
+  enable-gpios:
+    maxItems: 1
+    description: GPIO to control panel power enable
+
+required:
+  - compatible
+  - reg
+  - vdd-supply
+  - reset-gpios
+  - enable-gpios
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi@ae94000 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@1 {
+            compatible = "waveshare,10.1-dsi-touch-a";
+            reg = <1>;
+            vdd-supply = <&vreg_l11a>;
+            reset-gpios = <&display_mcu 1 GPIO_ACTIVE_HIGH>;
+            enable-gpios = <&display_mcu 2 GPIO_ACTIVE_HIGH>;
+
+            port {
+                panel_in: endpoint {
+                    remote-endpoint = <&mdss_dsi0_out>;
+                };
+            };
+        };
+    };
+
+    mdss_dsi0_out: endpoint {
+        remote-endpoint = <&panel_in>;
+    };
diff --git a/Documentation/devicetree/bindings/regulator/waveshare,touchscreen-panel-regulator.yaml b/Documentation/devicetree/bindings/regulator/waveshare,touchscreen-panel-regulator.yaml
new file mode 100644
index 000000000000..be81be5d2d74
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/waveshare,touchscreen-panel-regulator.yaml
@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/waveshare,touchscreen-panel-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Waveshare Touchscreen Panel Regulator
+
+maintainers:
+  - Sudarshan Shetty <tessolveupstream@gmail.com>
+
+description: |
+  Regulator driver for Waveshare touchscreen display units.
+  This regulator enables and disables panel power and provides
+  backlight control over I2C.
+
+properties:
+  compatible:
+    const: waveshare,touchscreen-panel-regulator
+
+  reg:
+    maxItems: 1
+    description: I2C address of the regulator device
+
+  vin-supply:
+    description: Input supply regulator for the panel
+
+  enable-gpios:
+    maxItems: 1
+    description: GPIO to enable/disable regulator
+
+required:
+  - compatible
+  - reg
+  - vin-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    /dts-v1/;
+    /plugin/;
+
+    / {
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        gpio: gpio-controller {
+            compatible = "test,gpio";
+            #gpio-cells = <2>;
+        };
+
+        vdd_3v3: regulator {
+            compatible = "regulator-fixed";
+            regulator-name = "vdd_3v3";
+            regulator-min-microvolt = <3300000>;
+            regulator-max-microvolt = <3300000>;
+        };
+
+        i2c@980000 {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            compatible = "test,i2c";
+
+            panel-regulator@3c {
+                compatible = "waveshare,touchscreen-panel-regulator";
+                reg = <0x3c>;
+                vin-supply = <&vdd_3v3>;
+                enable-gpios = <&gpio 2 0>; /* active high */
+            };
+        };
+    };
-- 
2.34.1