Add the bindings for the Toshiba TC358746 Parallel <-> MIPI-CSI bridge driver. Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx> Reviewed-by: Rob Herring <robh@xxxxxxxxxx> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> --- Changelog v3: - put the mclk comment into the description of #clock-cells - make bus-type required - allow all sync values - allow all possible parallel bus-types - added Laurent's r-b v2: - addded Robs r-b - s/than/then/ - added hsync/vsync/bus-type, make hsync/vsync required - fix example indent --- .../bindings/media/i2c/toshiba,tc358746.yaml | 178 ++++++++++++++++++ 1 file changed, 178 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.yaml diff --git a/Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.yaml b/Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.yaml new file mode 100644 index 000000000000..b8ba85a2416c --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.yaml @@ -0,0 +1,178 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/i2c/toshiba,tc358746.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Toshiba TC358746 Parallel to MIPI CSI2 Bridge + +maintainers: + - Marco Felsch <kernel@xxxxxxxxxxxxxx> + +description: |- + The Toshiba TC358746 converts a parallel video stream into a MIPI CSI-2 + stream. The direction can be either parallel-in -> csi-out or csi-in -> + parallel-out The chip is programmable trough I2C and SPI but the SPI + interface is only supported in parallel-in -> csi-out mode. + + Note that the current device tree bindings only support the + parallel-in -> csi-out path. + +properties: + compatible: + const: toshiba,tc358746 + + reg: + maxItems: 1 + + clocks: + description: + The phandle to the reference clock source. This corresponds to the + hardware pin REFCLK. + maxItems: 1 + + clock-names: + const: refclk + + "#clock-cells": + description: | + The bridge can act as clock provider for the sensor. To enable this + support #clock-cells must be specified. Attention if this feature is used + then the mclk rate must be at least: (2 * link-frequency) / 8 + `------------------´ ^ + internal PLL rate smallest possible + mclk-div + const: 0 + + clock-output-names: + description: + The clock name of the MCLK output, the default name is tc358746-mclk. + maxItems: 1 + + vddc-supply: + description: Digital core voltage supply, 1.2 volts + + vddio-supply: + description: Digital I/O voltage supply, 1.8 volts + + vddmipi-supply: + description: MIPI CSI phy voltage supply, 1.2 volts + + reset-gpios: + description: + The phandle and specifier for the GPIO that controls the chip reset. + This corresponds to the hardware pin RESX which is physically active low. + maxItems: 1 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + properties: + port@0: + $ref: /schemas/graph.yaml#/$defs/port-base + description: Input port + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + properties: + hsync-active: true + vsync-active: true + bus-type: + enum: [ 5, 6 ] + + required: + - hsync-active + - vsync-active + - bus-type + + port@1: + $ref: /schemas/graph.yaml#/$defs/port-base + description: Output port + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + properties: + data-lanes: + minItems: 1 + maxItems: 4 + + clock-noncontinuous: true + link-frequencies: true + + required: + - data-lanes + - link-frequencies + + required: + - port@0 + - port@1 + +required: + - compatible + - reg + - clocks + - clock-names + - vddc-supply + - vddio-supply + - vddmipi-supply + - ports + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + csi-bridge@e { + compatible = "toshiba,tc358746"; + reg = <0xe>; + + clocks = <&refclk>; + clock-names = "refclk"; + + reset-gpios = <&gpio 2 GPIO_ACTIVE_LOW>; + + vddc-supply = <&v1_2d>; + vddio-supply = <&v1_8d>; + vddmipi-supply = <&v1_2d>; + + /* sensor mclk provider */ + #clock-cells = <0>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + /* Input */ + port@0 { + reg = <0>; + tc358746_in: endpoint { + remote-endpoint = <&sensor_out>; + hsync-active = <0>; + vsync-active = <0>; + bus-type = <5>; + }; + }; + + /* Output */ + port@1 { + reg = <1>; + tc358746_out: endpoint { + remote-endpoint = <&mipi_csi2_in>; + data-lanes = <1 2>; + clock-noncontinuous; + link-frequencies = /bits/ 64 <216000000>; + }; + }; + }; + }; + }; -- 2.30.2
