dt-bindings: media: Convert Allwinner A31 CSI to a schema
The newer Allwinner SoCs have a camera controller that is supported in Linux, with a matching Device Tree binding. Now that we have the DT validation in place, let's convert the device tree bindings for that controller over to a YAML schemas. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Rob Herring <robh@kernel.org>
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Maxime Ripard
Rob Herring
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commit
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# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/media/allwinner,sun6i-a31-csi.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Allwinner A31 CMOS Sensor Interface (CSI) Device Tree Bindings
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maintainers:
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- Chen-Yu Tsai <wens@csie.org>
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- Maxime Ripard <mripard@kernel.org>
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properties:
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compatible:
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enum:
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- allwinner,sun6i-a31-csi
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- allwinner,sun8i-a83t-csi
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- allwinner,sun8i-h3-csi
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- allwinner,sun8i-v3s-csi
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- allwinner,sun50i-a64-csi
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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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clocks:
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items:
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- description: Bus Clock
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- description: Module Clock
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- description: DRAM Clock
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clock-names:
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items:
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- const: bus
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- const: mod
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- const: ram
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resets:
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maxItems: 1
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# See ./video-interfaces.txt for details
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port:
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type: object
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properties:
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endpoint:
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type: object
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properties:
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remote-endpoint: true
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bus-width:
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enum: [ 8, 10, 12, 16 ]
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pclk-sample: true
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hsync-active: true
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vsync-active: true
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required:
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- bus-width
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- remote-endpoint
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required:
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- endpoint
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additionalProperties: false
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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- clock-names
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- resets
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additionalProperties: false
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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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#include <dt-bindings/clock/sun8i-v3s-ccu.h>
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#include <dt-bindings/reset/sun8i-v3s-ccu.h>
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csi1: csi@1cb4000 {
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compatible = "allwinner,sun8i-v3s-csi";
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reg = <0x01cb4000 0x1000>;
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interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&ccu CLK_BUS_CSI>,
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<&ccu CLK_CSI1_SCLK>,
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<&ccu CLK_DRAM_CSI>;
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clock-names = "bus",
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"mod",
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"ram";
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resets = <&ccu RST_BUS_CSI>;
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port {
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/* Parallel bus endpoint */
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csi1_ep: endpoint {
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remote-endpoint = <&adv7611_ep>;
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bus-width = <16>;
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/*
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* If hsync-active/vsync-active are missing,
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* embedded BT.656 sync is used.
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*/
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hsync-active = <0>; /* Active low */
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vsync-active = <0>; /* Active low */
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pclk-sample = <1>; /* Rising */
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};
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};
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};
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...
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@ -1,61 +0,0 @@
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Allwinner V3s Camera Sensor Interface
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-------------------------------------
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Allwinner V3s SoC features a CSI module(CSI1) with parallel interface.
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Required properties:
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- compatible: value must be one of:
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* "allwinner,sun6i-a31-csi"
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* "allwinner,sun8i-a83t-csi"
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* "allwinner,sun8i-h3-csi"
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* "allwinner,sun8i-v3s-csi"
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* "allwinner,sun50i-a64-csi"
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- reg: base address and size of the memory-mapped region.
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- interrupts: interrupt associated to this IP
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- clocks: phandles to the clocks feeding the CSI
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* bus: the CSI interface clock
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* mod: the CSI module clock
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* ram: the CSI DRAM clock
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- clock-names: the clock names mentioned above
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- resets: phandles to the reset line driving the CSI
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The CSI node should contain one 'port' child node with one child 'endpoint'
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node, according to the bindings defined in
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Documentation/devicetree/bindings/media/video-interfaces.txt.
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Endpoint node properties for CSI
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---------------------------------
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See the video-interfaces.txt for a detailed description of these properties.
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- remote-endpoint : (required) a phandle to the bus receiver's endpoint
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node
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- bus-width: : (required) must be 8, 10, 12 or 16
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- pclk-sample : (optional) (default: sample on falling edge)
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- hsync-active : (required; parallel-only)
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- vsync-active : (required; parallel-only)
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Example:
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csi1: csi@1cb4000 {
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compatible = "allwinner,sun8i-v3s-csi";
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reg = <0x01cb4000 0x1000>;
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interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&ccu CLK_BUS_CSI>,
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<&ccu CLK_CSI1_SCLK>,
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<&ccu CLK_DRAM_CSI>;
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clock-names = "bus", "mod", "ram";
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resets = <&ccu RST_BUS_CSI>;
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port {
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/* Parallel bus endpoint */
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csi1_ep: endpoint {
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remote-endpoint = <&adv7611_ep>;
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bus-width = <16>;
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/* If hsync-active/vsync-active are missing,
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embedded BT.656 sync is used */
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hsync-active = <0>; /* Active low */
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vsync-active = <0>; /* Active low */
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pclk-sample = <1>; /* Rising */
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};
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};
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};
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