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dt-bindings: display: ti,tfp410.txt: convert to yaml
Convert the DT binding documentation for the TI TFP410 DPI-to-DVI encoder to json-schema. Signed-off-by: Ricardo Cañuelo <ricardo.canuelo@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200617094633.19663-2-ricardo.canuelo@collabora.com
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Ricardo Cañuelo
Sam Ravnborg
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commit
1dd8915291
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TFP410 DPI to DVI encoder
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=========================
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Required properties:
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- compatible: "ti,tfp410"
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Optional properties:
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- powerdown-gpios: power-down gpio
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- reg: I2C address. If and only if present the device node should be placed
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into the I2C controller node where the TFP410 I2C is connected to.
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- ti,deskew: data de-skew in 350ps increments, from -4 to +3, as configured
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through th DK[3:1] pins. This property shall be present only if the TFP410
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is not connected through I2C.
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Required nodes:
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This device has two video ports. Their connections are modeled using the OF
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graph bindings specified in [1]. Each port node shall have a single endpoint.
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- Port 0 is the DPI input port. Its endpoint subnode shall contain a
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pclk-sample and bus-width property and a remote-endpoint property as specified
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in [1].
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- If pclk-sample is not defined, pclk-sample = 0 should be assumed for
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backward compatibility.
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- If bus-width is not defined then bus-width = 24 should be assumed for
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backward compatibility.
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bus-width = 24: 24 data lines are connected and single-edge mode
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bus-width = 12: 12 data lines are connected and dual-edge mode
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- Port 1 is the DVI output port. Its endpoint subnode shall contain a
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remote-endpoint property is specified in [1].
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[1] Documentation/devicetree/bindings/media/video-interfaces.txt
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Example
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-------
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tfp410: encoder@0 {
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compatible = "ti,tfp410";
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powerdown-gpios = <&twl_gpio 2 GPIO_ACTIVE_LOW>;
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ti,deskew = <4>;
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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tfp410_in: endpoint@0 {
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pclk-sample = <1>;
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bus-width = <24>;
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remote-endpoint = <&dpi_out>;
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};
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};
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port@1 {
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reg = <1>;
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tfp410_out: endpoint@0 {
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remote-endpoint = <&dvi_connector_in>;
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};
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};
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};
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};
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130
Documentation/devicetree/bindings/display/bridge/ti,tfp410.yaml
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130
Documentation/devicetree/bindings/display/bridge/ti,tfp410.yaml
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@ -0,0 +1,130 @@
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# SPDX-License-Identifier: GPL-2.0-only
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/display/bridge/ti,tfp410.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: TFP410 DPI to DVI encoder
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maintainers:
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- Tomi Valkeinen <tomi.valkeinen@ti.com>
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- Jyri Sarha <jsarha@ti.com>
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properties:
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compatible:
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const: ti,tfp410
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reg:
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description: I2C address of the device.
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maxItems: 1
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powerdown-gpios:
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maxItems: 1
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ti,deskew:
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description:
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Data de-skew in 350ps increments, from -4 to +3, as configured
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through th DK[3:1] pins. This property shall be present only if the TFP410
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is not connected through I2C.
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maxItems: 1
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$ref: /schemas/types.yaml#/definitions/uint32
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ports:
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description:
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A node containing input and output port nodes with endpoint
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definitions as documented in
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Documentation/devicetree/bindings/media/video-interfaces.txt
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type: object
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properties:
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port@0:
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description: DPI input port.
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type: object
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properties:
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reg:
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const: 0
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endpoint:
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type: object
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properties:
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pclk-sample:
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description:
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Endpoint sampling edge.
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enum:
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- 0 # Falling edge
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- 1 # Rising edge
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default: 0
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bus-width:
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description:
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Endpoint bus width.
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enum:
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- 12 # 12 data lines connected and dual-edge mode
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- 24 # 24 data lines connected and single-edge mode
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default: 24
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port@1:
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description: DVI output port.
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type: object
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properties:
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reg:
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const: 1
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endpoint:
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type: object
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required:
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- port@0
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- port@1
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required:
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- compatible
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- ports
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if:
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required:
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- reg
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then:
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properties:
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ti,deskew: false
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else:
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required:
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- ti,deskew
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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tfp410: encoder {
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compatible = "ti,tfp410";
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powerdown-gpios = <&twl_gpio 2 GPIO_ACTIVE_LOW>;
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ti,deskew = <3>;
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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tfp410_in: endpoint {
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pclk-sample = <1>;
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bus-width = <24>;
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remote-endpoint = <&dpi_out>;
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};
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};
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port@1 {
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reg = <1>;
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tfp410_out: endpoint {
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remote-endpoint = <&dvi_connector_in>;
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};
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};
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};
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};
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...
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