Re: [PATCH v6 5/8] dt-bindings: media: add TI DS90UB960 FPD-Link III Deserializer

Laurent Pinchart
2023-01-08T03:23:54Z

Hi Tomi,

Thank you for the patch.

On Thu, Jan 05, 2023 at 04:03:04PM +0200, Tomi Valkeinen wrote:
> Add DT bindings for TI DS90UB960 FPD-Link III Deserializer.
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
> .../bindings/media/i2c/ti,ds90ub960.yaml | 402 ++++++++++++++++++
> 1 file changed, 402 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
>
> diff --git a/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
> new file mode 100644
> index 000000000000..664799ae55be
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
> @@ -0,0 +1,402 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/i2c/ti,ds90ub960.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Texas Instruments DS90UB9XX Family FPD-Link Deserializer Hubs
> +
> +maintainers:
> + - Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
> +
> +description:
> + The TI DS90UB9XX devices are FPD-Link video deserializers with I2C and GPIO
> + forwarding.
> +
> +properties:
> + compatible:
> + enum:
> + - ti,ds90ub960-q1
> + - ti,ds90ub9702-q1
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> + description:
> + Reference clock connected to the REFCLK pin.
> +
> + clock-names:
> + items:
> + - const: refclk
> +
> + powerdown-gpios:
> + maxItems: 1
> + description:
> + Specifier for the GPIO connected to the PDB pin.
> +
> + i2c-alias-pool:
> + $ref: /schemas/types.yaml#/definitions/uint16-array
> + description:
> + I2C alias pool is a pool of I2C addresses on the main I2C bus that can be
> + used to access the remote peripherals on the serializer's I2C bus. The
> + addresses must be available, not used by any other peripheral. Each
> + remote peripheral is assigned an alias from the pool, and transactions to
> + that address will be forwarded to the remote peripheral, with the address
> + translated to the remote peripheral's real address. This property is not
> + needed if there are no I2C addressable remote peripherals.
> +
> + links:
> + type: object
> + additionalProperties: false
> +
> + properties:
> + '#address-cells':
> + const: 1
> +
> + '#size-cells':
> + const: 0
> +
> + ti,manual-strobe:
> + type: boolean
> + description:
> + Enable manual strobe position and EQ level
> +
> + patternProperties:
> + '^link@[0-3]$':
> + type: object
> + additionalProperties: false
> + properties:
> + reg:
> + description: The link number
> + maxItems: 1
> +
> + i2c-alias:
> + description:
> + The I2C address used for the serializer. Transactions to this
> + address on the I2C bus where the deserializer resides are
> + forwarded to the serializer.
> +
> + ti,rx-mode:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + enum:
> + - 0 # RAW10
> + - 1 # RAW12 HF
> + - 2 # RAW12 LF
> + - 3 # CSI2 SYNC
> + - 4 # CSI2 NON-SYNC
> + description:
> + FPD-Link Input Mode. This should reflect the hardware and the
> + default mode of the connected camera module.

As the remote device may not be a camera, I'd write "of the connected
device" or "of the connected serializer".

> +
> + ti,cdr-mode:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + enum:
> + - 0 # FPD-Link III
> + - 1 # FPD-Link IV
> + description:
> + FPD-Link CDR Mode. This should reflect the hardware and the
> + default mode of the connected camera module.
> +
> + ti,strobe-pos:
> + $ref: /schemas/types.yaml#/definitions/int32
> + minimum: -13
> + maximum: 13
> + description: Manual strobe position
> +
> + ti,eq-level:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + maximum: 14
> + description: Manual EQ level
> +
> + serializer:
> + type: object
> + description: FPD-Link Serializer node
> +
> + required:
> + - reg
> + - i2c-alias
> + - ti,rx-mode
> + - serializer
> +
> + ports:
> + $ref: /schemas/graph.yaml#/properties/ports
> +
> + properties:
> + port@0:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description: FPD-Link input 0
> +
> + properties:
> + endpoint:
> + $ref: /schemas/media/video-interfaces.yaml#
> + unevaluatedProperties: false
> + description:
> + Endpoint for FPD-Link port. If the RX mode for this port is RAW,
> + hsync-active and vsync-active must be defined.
> +
> + port@1:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description: FPD-Link input 1
> +
> + properties:
> + endpoint:
> + $ref: /schemas/media/video-interfaces.yaml#
> + unevaluatedProperties: false
> + description:
> + Endpoint for FPD-Link port. If the RX mode for this port is RAW,
> + hsync-active and vsync-active must be defined.
> +
> + port@2:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description: FPD-Link input 2
> +
> + properties:
> + endpoint:
> + $ref: /schemas/media/video-interfaces.yaml#
> + unevaluatedProperties: false
> + description:
> + Endpoint for FPD-Link port. If the RX mode for this port is RAW,
> + hsync-active and vsync-active must be defined.
> +
> + port@3:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description: FPD-Link input 3
> +
> + properties:
> + endpoint:
> + $ref: /schemas/media/video-interfaces.yaml#
> + unevaluatedProperties: false
> + description:
> + Endpoint for FPD-Link port. If the RX mode for this port is RAW,
> + hsync-active and vsync-active must be defined.
> +
> + port@4:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description: CSI-2 Output 0
> +
> + properties:
> + endpoint:
> + $ref: /schemas/media/video-interfaces.yaml#
> + unevaluatedProperties: false
> +
> + properties:
> + data-lanes:
> + minItems: 1
> + maxItems: 4
> +
> + required:
> + - data-lanes
> +
> + port@5:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description: CSI-2 Output 1
> +
> + properties:
> + endpoint:
> + $ref: /schemas/media/video-interfaces.yaml#
> + unevaluatedProperties: false
> +
> + properties:
> + data-lanes:
> + minItems: 1
> + maxItems: 4
> +
> + required:
> + - data-lanes

I think you need

required:
- port@0
- port@1
- port@2
- port@3
- port@4
- port@5

> +
> +required:
> + - compatible
> + - reg
> + - clocks
> + - clock-names
> + - ports
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/gpio/gpio.h>
> +
> + i2c {
> + clock-frequency = <400000>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + deser@3d {
> + compatible = "ti,ds90ub960-q1";
> + reg = <0x3d>;
> +
> + clock-names = "refclk";
> + clocks = <&fixed_clock>;
> +
> + powerdown-gpios = <&pca9555 7 GPIO_ACTIVE_LOW>;
> +
> + i2c-alias-pool = /bits/ 16 <0x4a 0x4b 0x4c 0x4d 0x4e 0x4f>;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + /* Port 0, Camera 0 */
> + port@0 {
> + reg = <0>;
> +
> + ub960_fpd3_1_in: endpoint {
> + remote-endpoint = <&ub953_1_out>;
> + };
> + };
> +
> + /* Port 1, Camera 1 */
> + port@1 {
> + reg = <1>;
> +
> + ub960_fpd3_2_in: endpoint {
> + remote-endpoint = <&ub913_2_out>;
> + hsync-active = <0>;
> + vsync-active = <1>;
> + };
> + };
> +
> + /* Port 4, CSI-2 TX */
> + port@4 {
> + reg = <4>;
> + ds90ub960_0_csi_out: endpoint {
> + data-lanes = <1 2 3 4>;
> + link-frequencies = /bits/ 64 <800000000>;
> + remote-endpoint = <&csi2_phy0>;
> + };
> + };
> + };
> +
> + links {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + /* Link 0 has DS90UB953 serializer and IMX274 sensor */
> +
> + link@0 {
> + reg = <0>;
> + i2c-alias = <0x44>;
> +
> + ti,rx-mode = <3>;
> +
> + serializer1: serializer {
> + compatible = "ti,ds90ub953-q1";
> +
> + gpio-controller;
> + #gpio-cells = <2>;
> +
> + #clock-cells = <0>;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + ub953_1_in: endpoint {
> + data-lanes = <1 2 3 4>;
> + remote-endpoint = <&sensor_1_out>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> +
> + ub953_1_out: endpoint {
> + remote-endpoint = <&ub960_fpd3_1_in>;
> + };
> + };
> + };
> +
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + sensor@1a {
> + compatible = "sony,imx274";
> + reg = <0x1a>;
> +
> + reset-gpios = <&serializer1 0 GPIO_ACTIVE_LOW>;
> +
> + port {
> + sensor_1_out: endpoint {
> + remote-endpoint = <&ub953_1_in>;
> + };
> + };
> + };
> + };
> + };
> + }; /* End of link@0 */
> +
> + /* Link 1 has DS90UB913 serializer and MT9V111 sensor */
> +
> + link@1 {
> + reg = <1>;
> + i2c-alias = <0x45>;
> +
> + ti,rx-mode = <0>;
> +
> + serializer2: serializer {
> + compatible = "ti,ds90ub913a-q1";
> +
> + gpio-controller;
> + #gpio-cells = <2>;
> +
> + clocks = <&clk_cam_48M>;
> + clock-names = "clkin";
> +
> + #clock-cells = <0>;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + ub913_2_in: endpoint {
> + remote-endpoint = <&sensor_2_out>;
> + pclk-sample = <1>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> +
> + ub913_2_out: endpoint {
> + remote-endpoint = <&ub960_fpd3_2_in>;
> + };
> + };
> + };
> +
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + sensor@48 {
> + compatible = "aptina,mt9v111";
> + reg = <0x48>;
> +
> + clocks = <&serializer2>;
> +
> + port {
> + sensor_2_out: endpoint {
> + remote-endpoint = <&ub913_2_in>;
> + };
> + };
> + };
> + };
> + };
> + }; /* End of link@1 */
> + };
> + };
> + };
> +...

--
Regards,

Laurent Pinchart