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Date: Mon, 24 Jun 2019 15:56:44 -0600
From: Rob Herring <robh@...nel.org>
To: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
Thierry Reding <thierry.reding@...il.com>,
Sam Ravnborg <sam@...nborg.org>,
Maxime Ripard <maxime.ripard@...tlin.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH v2 10/15] dt-bindings: display: Convert tpo,tpg110 panel to DT schema
Convert the tpo,tpg110 panel binding to DT schema.
Cc: Linus Walleij <linus.walleij@...aro.org>
Cc: Thierry Reding <thierry.reding@...il.com>
Cc: Sam Ravnborg <sam@...nborg.org>
Cc: Maxime Ripard <maxime.ripard@...tlin.com>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: dri-devel@...ts.freedesktop.org
Signed-off-by: Rob Herring <robh@...nel.org>
---
.../bindings/display/panel/tpo,tpg110.txt | 70 ------------
.../bindings/display/panel/tpo,tpg110.yaml | 101 ++++++++++++++++++
2 files changed, 101 insertions(+), 70 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/display/panel/tpo,tpg110.txt
create mode 100644 Documentation/devicetree/bindings/display/panel/tpo,tpg110.yaml
diff --git a/Documentation/devicetree/bindings/display/panel/tpo,tpg110.txt b/Documentation/devicetree/bindings/display/panel/tpo,tpg110.txt
deleted file mode 100644
index 40f3d7c713bb..000000000000
--- a/Documentation/devicetree/bindings/display/panel/tpo,tpg110.txt
+++ /dev/null
@@ -1,70 +0,0 @@
-TPO TPG110 Panel
-================
-
-This panel driver is a component that acts as an intermediary
-between an RGB output and a variety of panels. The panel
-driver is strapped up in electronics to the desired resolution
-and other properties, and has a control interface over 3WIRE
-SPI. By talking to the TPG110 over SPI, the strapped properties
-can be discovered and the hardware is therefore mostly
-self-describing.
-
- +--------+
-SPI -> | TPO | -> physical display
-RGB -> | TPG110 |
- +--------+
-
-If some electrical strap or alternate resolution is desired,
-this can be set up by taking software control of the display
-over the SPI interface. The interface can also adjust
-for properties of the display such as gamma correction and
-certain electrical driving levels.
-
-The TPG110 does not know the physical dimensions of the panel
-connected, so this needs to be specified in the device tree.
-
-It requires a GPIO line for control of its reset line.
-
-The serial protocol has line names that resemble I2C but the
-protocol is not I2C but 3WIRE SPI.
-
-Required properties:
-- compatible : one of:
- "ste,nomadik-nhk15-display", "tpo,tpg110"
- "tpo,tpg110"
-- grestb-gpios : panel reset GPIO
-- width-mm : see display/panel/panel-common.txt
-- height-mm : see display/panel/panel-common.txt
-
-The device needs to be a child of an SPI bus, see
-spi/spi-bus.txt. The SPI child must set the following
-properties:
-- spi-3wire
-- spi-max-frequency = <3000000>;
-as these are characteristics of this device.
-
-The device node can contain one 'port' child node with one child
-'endpoint' node, according to the bindings defined in
-media/video-interfaces.txt. This node should describe panel's video bus.
-
-Example
--------
-
-panel: display@0 {
- compatible = "tpo,tpg110";
- reg = <0>;
- spi-3wire;
- /* 320 ns min period ~= 3 MHz */
- spi-max-frequency = <3000000>;
- /* Width and height from data sheet */
- width-mm = <116>;
- height-mm = <87>;
- grestb-gpios = <&foo_gpio 5 GPIO_ACTIVE_LOW>;
- backlight = <&bl>;
-
- port {
- nomadik_clcd_panel: endpoint {
- remote-endpoint = <&foo>;
- };
- };
-};
diff --git a/Documentation/devicetree/bindings/display/panel/tpo,tpg110.yaml b/Documentation/devicetree/bindings/display/panel/tpo,tpg110.yaml
new file mode 100644
index 000000000000..a51660b73f28
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/tpo,tpg110.yaml
@@ -0,0 +1,101 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/tpo,tpg110.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TPO TPG110 Panel
+
+maintainers:
+ - Linus Walleij <linus.walleij@...aro.org>
+ - Thierry Reding <thierry.reding@...il.com>
+
+description: |+
+ This panel driver is a component that acts as an intermediary
+ between an RGB output and a variety of panels. The panel
+ driver is strapped up in electronics to the desired resolution
+ and other properties, and has a control interface over 3WIRE
+ SPI. By talking to the TPG110 over SPI, the strapped properties
+ can be discovered and the hardware is therefore mostly
+ self-describing.
+
+ +--------+
+ SPI -> | TPO | -> physical display
+ RGB -> | TPG110 |
+ +--------+
+
+ If some electrical strap or alternate resolution is desired,
+ this can be set up by taking software control of the display
+ over the SPI interface. The interface can also adjust
+ for properties of the display such as gamma correction and
+ certain electrical driving levels.
+
+ The TPG110 does not know the physical dimensions of the panel
+ connected, so this needs to be specified in the device tree.
+
+ It requires a GPIO line for control of its reset line.
+
+ The serial protocol has line names that resemble I2C but the
+ protocol is not I2C but 3WIRE SPI.
+
+
+allOf:
+ - $ref: panel-common.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - ste,nomadik-nhk15-display
+ - const: tpo,tpg110
+ - const: tpo,tpg110
+
+ reg: true
+
+ grestb-gpios:
+ maxItems: 1
+ description: panel reset GPIO
+
+ spi-3wire: true
+
+ spi-max-frequency:
+ const: 3000000
+
+required:
+ - compatible
+ - reg
+ - grestb-gpios
+ - width-mm
+ - height-mm
+ - spi-3wire
+ - spi-max-frequency
+ - port
+
+examples:
+ - |+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ panel: display@0 {
+ compatible = "tpo,tpg110";
+ reg = <0>;
+ spi-3wire;
+ /* 320 ns min period ~= 3 MHz */
+ spi-max-frequency = <3000000>;
+ /* Width and height from data sheet */
+ width-mm = <116>;
+ height-mm = <87>;
+ grestb-gpios = <&foo_gpio 5 1>;
+ backlight = <&bl>;
+
+ port {
+ nomadik_clcd_panel: endpoint {
+ remote-endpoint = <&foo>;
+ };
+ };
+ };
+ };
+
+...
--
2.20.1
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