Add documentation of device tree in YAML schema for the ALVIUM Camera from Allied Vision Inc. References: - https://www.alliedvision.com/en/products/embedded-vision-solutions Signed-off-by: Tommaso Merciai <tomm.merciai@xxxxxxxxx> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> --- Changes since v1: - Fixed build error as suggested by RHerring bot Changes since v2: - Fixed License as suggested by KKozlowski/CDooley - Removed rotation property as suggested by CDooley/LPinchart - Fixed example node name as suggested by CDooley - Fixed title as suggested by LPinchart - Fixed compatible name as suggested by LPinchart - Removed clock as suggested by LPinchart - Removed gpios not as suggested by LPinchart - Renamed property name streamon-delay into alliedvision,lp2hs-delay-us - Fixed vendor prefix, unit append as suggested by KKozlowski - Fixed data-lanes - Fixed blank space + example indentation (from 6 -> 4 space) as suggested by KKozlowski - Dropped status into example as suggested by KKozlowski - Added vcc-ext-in supply as suggested by LPinchart - Dropped pinctrl into example as suggested by LPinchart Changes since v3: - Fixed vcc-ext-in-supply description as suggested by LPinchart - Fixed alliedvision,lp2hs-delay-us description as suggested by LPinchart - Added maximum to alliedvision,lp2hs-delay-us as suggested by LPinchart - Collected Reviewed-by tag from LPinchart Changes since v4: - Fixed id as reported by RHerring bot and LPinchart - Add minimum into alliedvision,lp2hs-delay-us as suggested by CDooley - Tested using make dt_binding_check DT_SCHEMA_FILES=alliedvision,alvium-csi2.yaml Changes since v5: - Fixed alliedvision,lp2hs-delay-us description as suggested by CDooley - Collected CDooley Reviewed-by tag .../media/i2c/alliedvision,alvium-csi2.yaml | 97 +++++++++++++++++++ 1 file changed, 97 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/alliedvision,alvium-csi2.yaml diff --git a/Documentation/devicetree/bindings/media/i2c/alliedvision,alvium-csi2.yaml b/Documentation/devicetree/bindings/media/i2c/alliedvision,alvium-csi2.yaml new file mode 100644 index 000000000000..327cd5421257 --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/alliedvision,alvium-csi2.yaml @@ -0,0 +1,97 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/i2c/alliedvision,alvium-csi2.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Allied Vision Alvium Camera + +maintainers: + - Tommaso Merciai <tomm.merciai@xxxxxxxxx> + - Martin Hecht <martin.hecht@xxxxxxxx> + +allOf: + - $ref: /schemas/media/video-interface-devices.yaml# + +properties: + compatible: + const: alliedvision,alvium-csi2 + + reg: + maxItems: 1 + + vcc-ext-in-supply: + description: | + The regulator that supplies power to the VCC_EXT_IN pins. + + alliedvision,lp2hs-delay-us: + minimum: 1 + maximum: 150000 + description: | + Low power to high speed delay time. + + If the value is present, the camera forces a reset of all + D-PHY lanes for the duration specified by this property. All lanes + will transition to the low-power state and back to the high-speed + state after the delay. Otherwise the lanes will transition to and + remain in the high-speed state immediately after power on. + + This is meant to help CSI-2 receivers synchronizing their D-PHY + RX. + + port: + description: Digital Output Port + $ref: /schemas/graph.yaml#/$defs/port-base + additionalProperties: false + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + properties: + link-frequencies: true + + data-lanes: + minItems: 1 + items: + - const: 1 + - const: 2 + - const: 3 + - const: 4 + + required: + - data-lanes + - link-frequencies + +required: + - compatible + - reg + - vcc-ext-in-supply + - port + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + alvium: camera@3c { + compatible = "alliedvision,alvium-csi2"; + reg = <0x3c>; + vcc-ext-in-supply = <®_vcc_ext_in>; + alliedvision,lp2hs-delay-us = <20>; + + port { + alvium_out: endpoint { + remote-endpoint = <&mipi_csi_0_in>; + data-lanes = <1 2 3 4>; + link-frequencies = /bits/ 64 <681250000>; + }; + }; + }; + }; + +... -- 2.34.1
