linux-kernel - Re: [PATCH v9 1/3] media: dt-bindings: media: add bindings for Rockchip CIF

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Date:   Mon, 30 Oct 2023 14:32:36 -0500
From:   Rob Herring <robh@...nel.org>
To:     Mehdi Djait <mehdi.djait@...tlin.com>
Cc:     mchehab@...nel.org, heiko@...ech.de, hverkuil-cisco@...all.nl,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, thomas.petazzoni@...tlin.com,
        alexandre.belloni@...tlin.com, maxime.chevallier@...tlin.com,
        paul.kocialkowski@...tlin.com, michael.riesch@...fvision.net
Subject: Re: [PATCH v9 1/3] media: dt-bindings: media: add bindings for
 Rockchip CIF

On Mon, Oct 30, 2023 at 01:25:12PM +0100, Mehdi Djait wrote:
> Add a documentation for the Rockchip Camera Interface
> binding.
> 
> Signed-off-by: Mehdi Djait <mehdi.djait@...tlin.com>
> ---
> v8=>v9:
> dropped the "Reviewed-by: Rob Herring <robh@...nel.org>"
> because of the following changes:
> - changed the compatible to rk3066-cif: rk3066 is the earliest Rockchip SoC
>   that uses cif and it is the first model starting the RK30 lineup.

Is px30 compatible with rk3066? It's not clear because you didn't add 
rk3066 support. If not compatible, then add rk3066 when you have a user. 
If it is compatible, then you should have a fallback for px30.

> - adjusted the description
> - changed the node name to video-capture
> 
> 
>  .../bindings/media/rockchip,rk3066-cif.yaml   | 96 +++++++++++++++++++
>  1 file changed, 96 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/rockchip,rk3066-cif.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/rockchip,rk3066-cif.yaml b/Documentation/devicetree/bindings/media/rockchip,rk3066-cif.yaml
> new file mode 100644
> index 000000000000..be69e474ed26
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/rockchip,rk3066-cif.yaml
> @@ -0,0 +1,96 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/rockchip,rk3066-cif.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Rockchip CIF Camera Interface
> +
> +maintainers:
> +  - Mehdi Djait <mehdi.djait@...tlin.com>
> +
> +description: |

Don't need '|'

> +  CIF is a camera interface present on some rockchip SoCs. It
> +  receives the data from Camera sensor or CCIR656 encoder and
> +  transfers it into system main memory by AXI bus.

Wrap lines at 80.

> +
> +properties:
> +  compatible:
> +    enum:
> +      - rockchip,rk3066-cif
> +      - rockchip,px30-vip
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: ACLK
> +      - description: HCLK
> +      - description: PCLK
> +
> +  clock-names:
> +    items:
> +      - const: aclk
> +      - const: hclk
> +      - const: pclk
> +
> +  resets:
> +    items:
> +      - description: AXI
> +      - description: AHB
> +      - description: PCLK IN
> +
> +  reset-names:
> +    items:
> +      - const: axi
> +      - const: ahb
> +      - const: pclkin
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  port:
> +    $ref: /schemas/graph.yaml#/properties/port
> +    description: A connection to a sensor or decoder
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +  - port
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/clock/px30-cru.h>
> +    #include <dt-bindings/power/px30-power.h>
> +
> +    parent {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        video-capture@...90000 {
> +            compatible = "rockchip,px30-vip";
> +            reg = <0x0 0xff490000 0x0 0x200>;
> +            interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
> +            clocks = <&cru ACLK_CIF>, <&cru HCLK_CIF>, <&cru PCLK_CIF>;
> +            clock-names = "aclk", "hclk", "pclk";
> +            resets = <&cru SRST_CIF_A>, <&cru SRST_CIF_H>, <&cru SRST_CIF_PCLKIN>;
> +            reset-names = "axi", "ahb", "pclkin";
> +            power-domains = <&power PX30_PD_VI>;
> +
> +            port {
> +                endpoint {
> +                    remote-endpoint = <&tw9900_out>;
> +                };
> +            };
> +        };
> +    };
> +...
> -- 
> 2.41.0
>