linux-kernel - Re: [PATCH v7 1/3] media: dt-bindings: media: add bindings for Rockchip VIP

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Message-ID: <20231010-roman-corrode-a68390d5f330@spud>
Date:   Tue, 10 Oct 2023 16:35:53 +0100
From:   Conor Dooley <conor@...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, robh+dt@...nel.org,
        conor+dt@...nel.org, ezequiel@...guardiasur.com.ar,
        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
Subject: Re: [PATCH v7 1/3] media: dt-bindings: media: add bindings for
 Rockchip VIP

On Tue, Oct 10, 2023 at 03:15:04PM +0200, Mehdi Djait wrote:
> Add a documentation for the Rockchip Video Input Processor
> binding.
> 
> The PX30 SoC is the only platform supported so far.
> 
> Signed-off-by: Mehdi Djait <mehdi.djait@...tlin.com>
> ---
>  .../bindings/media/rockchip,px30-vip.yaml     | 93 +++++++++++++++++++
>  1 file changed, 93 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml b/Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml
> new file mode 100644
> index 000000000000..41f0cd58372d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml
> @@ -0,0 +1,93 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/rockchip,px30-vip.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Rockchip VIP Camera Interface
> +
> +maintainers:
> +  - Mehdi Djait <mehdi.djait@...tlin.com>
> +
> +description: |-

The |- is not needed here, you've got no fancy formattting to preserve.

> +  Rockchip VIP is the Video Input Processor of the rockchip PX30 SoC. It
> +  receives the data from Camera sensor or CCIR656 encoder and transfers it into
> +  system main memory by AXI bus.
> +
> +properties:
> +  compatible:
> +    const: 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

This description seems unneeded also.

> +
> +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>;
> +
> +        vip@...90000 {

This should be a generic node name.

> +            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>;

Blank line before child nodes please.

Otherwise, this looks mostly fine to me.

> +            port {
> +                endpoint {
> +                    remote-endpoint = <&tw9900_out>;
> +                };
> +            };
> +        };
> +    };
> +...
> -- 
> 2.41.0
> 

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