[PATCH v3] dt-bindings: one file of all simple DSI panels

Benjamin Gaignard benjamin.gaignard at st.com
Thu Jan 30 08:44:30 UTC 2020 

From: Sam Ravnborg <sam at ravnborg.org>

To complement panel-simple.yaml, create panel-simple-dsi.yaml.
panel-simple-dsi-yaml are for all simple DSP panels with a single
power-supply and optional backlight / enable GPIO / reset GPIO.

Migrate panasonic,vvx10f034n00, orisetech,otm8009a and raydium,rm68200 over to the new file.

The objectives with one file for all the simple DSI panels are:
    - Make it simpler to add bindings for simple DSI panels
    - Keep the number of bindings file lower
    - Keep the binding documentation for simple DSI panels more consistent

Signed-off-by: Sam Ravnborg <sam at ravnborg.org>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard at st.com>
Cc: Thierry Reding <thierry.reding at gmail.com>
Cc: Rob Herring <robh at kernel.org>
Cc: Maxime Ripard <mripard at kernel.org>
Cc: Yannick Fertre <yannick.fertre at st.com>
Cc: Mark Rutland <mark.rutland at arm.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: dri-devel at lists.freedesktop.org
Cc: devicetree at vger.kernel.org
---
version 3:
- add orisetech,otm8009a and raydium,rm68200 compatibles
- add reset-gpios optional property
- fix indentation on compatible enumeration
=> Rob had reviewed the second version but, given the changes in version 3
   I haven't added here.
 .../bindings/display/panel/orisetech,otm8009a.txt  | 23 -------
 .../display/panel/panasonic,vvx10f034n00.txt       | 20 ------
 .../bindings/display/panel/panel-simple-dsi.yaml   | 74 ++++++++++++++++++++++
 .../bindings/display/panel/raydium,rm68200.txt     | 25 --------
 4 files changed, 74 insertions(+), 68 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/display/panel/orisetech,otm8009a.txt
 delete mode 100644 Documentation/devicetree/bindings/display/panel/panasonic,vvx10f034n00.txt
 create mode 100644 Documentation/devicetree/bindings/display/panel/panel-simple-dsi.yaml
 delete mode 100644 Documentation/devicetree/bindings/display/panel/raydium,rm68200.txt

diff --git a/Documentation/devicetree/bindings/display/panel/orisetech,otm8009a.txt b/Documentation/devicetree/bindings/display/panel/orisetech,otm8009a.txt
deleted file mode 100644
index 203b03eefb68..000000000000
--- a/Documentation/devicetree/bindings/display/panel/orisetech,otm8009a.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-Orise Tech OTM8009A 3.97" 480x800 TFT LCD panel (MIPI-DSI video mode)
-
-The Orise Tech OTM8009A is a 3.97" 480x800 TFT LCD panel connected using
-a MIPI-DSI video interface. Its backlight is managed through the DSI link.
-
-Required properties:
-  - compatible: "orisetech,otm8009a"
-  - reg: the virtual channel number of a DSI peripheral
-
-Optional properties:
-  - reset-gpios: a GPIO spec for the reset pin (active low).
-  - power-supply: phandle of the regulator that provides the supply voltage.
-
-Example:
-&dsi {
-	...
-	panel at 0 {
-		compatible = "orisetech,otm8009a";
-		reg = <0>;
-		reset-gpios = <&gpioh 7 GPIO_ACTIVE_LOW>;
-		power-supply = <&v1v8>;
-	};
-};
diff --git a/Documentation/devicetree/bindings/display/panel/panasonic,vvx10f034n00.txt b/Documentation/devicetree/bindings/display/panel/panasonic,vvx10f034n00.txt
deleted file mode 100644
index 37dedf6a6702..000000000000
--- a/Documentation/devicetree/bindings/display/panel/panasonic,vvx10f034n00.txt
+++ /dev/null
@@ -1,20 +0,0 @@
-Panasonic 10" WUXGA TFT LCD panel
-
-Required properties:
-- compatible: should be "panasonic,vvx10f034n00"
-- reg: DSI virtual channel of the peripheral
-- power-supply: phandle of the regulator that provides the supply voltage
-
-Optional properties:
-- backlight: phandle of the backlight device attached to the panel
-
-Example:
-
-	mdss_dsi at fd922800 {
-		panel at 0 {
-			compatible = "panasonic,vvx10f034n00";
-			reg = <0>;
-			power-supply = <&vreg_vsp>;
-			backlight = <&lp8566_wled>;
-		};
-	};
diff --git a/Documentation/devicetree/bindings/display/panel/panel-simple-dsi.yaml b/Documentation/devicetree/bindings/display/panel/panel-simple-dsi.yaml
new file mode 100644
index 000000000000..1168b8186490
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/panel-simple-dsi.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/panel-simple-dsi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Simple DSI panels with a single power-supply
+
+maintainers:
+  - Thierry Reding <thierry.reding at gmail.com>
+  - Sam Ravnborg <sam at ravnborg.org>
+
+description: |
+  This binding file is a collection of the DSI panels that
+  requires only a single power-supply.
+  There are optionally a backlight and an enable GPIO.
+  The panel may use an OF graph binding for the association to the display,
+  or it may be a direct child node of the display.
+
+  If the panel is more advanced a dedicated binding file is required.
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+
+  compatible:
+    enum:
+      # compatible must be listed in alphabetical order, ordered by compatible.
+      # The description in the comment is mandatory for each compatible.
+
+        # Orise Tech OTM8009A is a 3.97" 480x800 TFT LCD
+      - orisetech,otm8009a
+        # Panasonic 10" WUXGA TFT LCD panel
+      - panasonic,vvx10f034n00
+        # Raydium Semiconductor Corporation RM68200 is a 5.5" 720x1280 TFT LCD
+      - raydium,rm68200
+
+  reg:
+    maxItems: 1
+    description: DSI virtual channel
+
+  reset-gpios:
+    maxItems : 1
+
+  backlight: true
+  enable-gpios: true
+  port: true
+  power-supply: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - power-supply
+  - reg
+
+examples:
+  - |
+    mdss_dsi at fd922800 {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      panel at 0 {
+        compatible = "panasonic,vvx10f034n00";
+        reg = <0>;
+        power-supply = <&vcc_lcd_reg>;
+
+        port {
+          panel: endpoint {
+            remote-endpoint = <&ltdc_out>;
+          };
+        };
+      };
+    };
diff --git a/Documentation/devicetree/bindings/display/panel/raydium,rm68200.txt b/Documentation/devicetree/bindings/display/panel/raydium,rm68200.txt
deleted file mode 100644
index cbb79ef3bfc9..000000000000
--- a/Documentation/devicetree/bindings/display/panel/raydium,rm68200.txt
+++ /dev/null
@@ -1,25 +0,0 @@
-Raydium Semiconductor Corporation RM68200 5.5" 720p MIPI-DSI TFT LCD panel
-
-The Raydium Semiconductor Corporation RM68200 is a 5.5" 720x1280 TFT LCD
-panel connected using a MIPI-DSI video interface.
-
-Required properties:
-  - compatible: "raydium,rm68200"
-  - reg: the virtual channel number of a DSI peripheral
-
-Optional properties:
-  - reset-gpios: a GPIO spec for the reset pin (active low).
-  - power-supply: phandle of the regulator that provides the supply voltage.
-  - backlight: phandle of the backlight device attached to the panel.
-
-Example:
-&dsi {
-	...
-	panel at 0 {
-		compatible = "raydium,rm68200";
-		reg = <0>;
-		reset-gpios = <&gpiof 15 GPIO_ACTIVE_LOW>;
-		power-supply = <&v1v8>;
-		backlight = <&pwm_backlight>;
-	};
-};
-- 
2.15.0

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