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dt-bindings: media: renesas,ceu: Convert to yaml
Convert the Renesas CEU bindings description to yaml schema and remove the existing textual bindings document. Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Rob Herring <robh@kernel.org>
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Jacopo Mondi
Rob Herring
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Renesas Capture Engine Unit (CEU)
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----------------------------------------------
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The Capture Engine Unit is the image capture interface found in the Renesas
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SH Mobile, R-Mobile and RZ SoCs.
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The interface supports a single parallel input with data bus width of 8 or 16
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bits.
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Required properties:
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- compatible: Shall be one of the following values:
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"renesas,r7s72100-ceu" for CEU units found in RZ/A1H and RZ/A1M SoCs
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"renesas,r8a7740-ceu" for CEU units found in R-Mobile A1 R8A7740 SoCs
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- reg: Registers address base and size.
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- interrupts: The interrupt specifier.
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The CEU supports a single parallel input and should contain a single 'port'
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subnode with a single 'endpoint'. Connection to input devices are modeled
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according to the video interfaces OF bindings specified in:
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[1] Documentation/devicetree/bindings/media/video-interfaces.txt
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Optional endpoint properties applicable to parallel input bus described in
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the above mentioned "video-interfaces.txt" file are supported.
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- hsync-active: See [1] for description. If property is not present,
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default is active high.
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- vsync-active: See [1] for description. If property is not present,
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default is active high.
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- bus-width: See [1] for description. Accepted values are '8' and '16'.
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If property is not present, default is '8'.
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- field-even-active: See [1] for description. If property is not present,
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an even field is identified by a logic 0 (active-low signal).
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Example:
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The example describes the connection between the Capture Engine Unit and an
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OV7670 image sensor connected to i2c1 interface.
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ceu: ceu@e8210000 {
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reg = <0xe8210000 0x209c>;
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compatible = "renesas,r7s72100-ceu";
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interrupts = <GIC_SPI 332 IRQ_TYPE_LEVEL_HIGH>;
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pinctrl-names = "default";
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pinctrl-0 = <&vio_pins>;
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status = "okay";
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port {
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ceu_in: endpoint {
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remote-endpoint = <&ov7670_out>;
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hsync-active = <1>;
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vsync-active = <0>;
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};
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};
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};
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i2c1: i2c@fcfee400 {
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pinctrl-names = "default";
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pinctrl-0 = <&i2c1_pins>;
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status = "okay";
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clock-frequency = <100000>;
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ov7670: camera@21 {
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compatible = "ovti,ov7670";
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reg = <0x21>;
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pinctrl-names = "default";
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pinctrl-0 = <&vio_pins>;
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reset-gpios = <&port3 11 GPIO_ACTIVE_LOW>;
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powerdown-gpios = <&port3 12 GPIO_ACTIVE_HIGH>;
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port {
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ov7670_out: endpoint {
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remote-endpoint = <&ceu_in>;
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hsync-active = <1>;
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vsync-active = <0>;
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};
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};
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};
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};
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78
Documentation/devicetree/bindings/media/renesas,ceu.yaml
Normal file
78
Documentation/devicetree/bindings/media/renesas,ceu.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/media/renesas,ceu.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Renesas Capture Engine Unit (CEU) Bindings
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maintainers:
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- Jacopo Mondi <jacopo+renesas@jmondi.org>
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- linux-renesas-soc@vger.kernel.org
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description: |+
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The Capture Engine Unit is the image capture interface found in the Renesas SH
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Mobile, R-Mobile and RZ SoCs. The interface supports a single parallel input
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with data bus width of 8 or 16 bits.
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properties:
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compatible:
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enum:
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- renesas,r7s72100-ceu
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- renesas,r8a7740-ceu
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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port:
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type: object
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additionalProperties: false
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properties:
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endpoint:
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type: object
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additionalProperties: false
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# Properties described in
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# Documentation/devicetree/bindings/media/video-interfaces.txt
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properties:
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remote-endpoint: true
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hsync-active: true
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vsync-active: true
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field-even-active: false
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bus-width:
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enum: [8, 16]
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default: 8
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required:
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- remote-endpoint
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required:
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- endpoint
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required:
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- compatible
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- reg
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- interrupts
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- port
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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ceu: ceu@e8210000 {
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reg = <0xe8210000 0x209c>;
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compatible = "renesas,r7s72100-ceu";
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interrupts = <GIC_SPI 332 IRQ_TYPE_LEVEL_HIGH>;
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port {
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ceu_in: endpoint {
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remote-endpoint = <&ov7670_out>;
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hsync-active = <1>;
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vsync-active = <0>;
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};
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};
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};
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@ -10277,7 +10277,7 @@ L: linux-media@vger.kernel.org
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L: linux-renesas-soc@vger.kernel.org
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T: git git://linuxtv.org/media_tree.git
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S: Supported
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F: Documentation/devicetree/bindings/media/renesas,ceu.txt
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F: Documentation/devicetree/bindings/media/renesas,ceu.yaml
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F: drivers/media/platform/renesas-ceu.c
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F: include/media/drv-intf/renesas-ceu.h
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