linux-kernel - Re: [PATCH v3 1/3] media: dt-bindings: media: Document Rockchip VIP bindings

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Date:   Wed, 23 Sep 2020 08:04:43 -0600
From:   Rob Herring <robh@...nel.org>
To:     Maxime Chevallier <maxime.chevallier@...tlin.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Mark Rutland <mark.rutland@....com>,
        Heiko Stuebner <heiko@...ech.de>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Helen Koike <helen.koike@...labora.com>,
        Dafna Hirschfeld <dafna.hirschfeld@...labora.com>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Subject: Re: [PATCH v3 1/3] media: dt-bindings: media: Document Rockchip VIP
 bindings

On Tue, Sep 22, 2020 at 06:55:33PM +0200, Maxime Chevallier wrote:
> Add a documentation for the Rockchip Camera Interface controller
> binding.
> 
> This controller can be found on platforms such as the PX30 or the
> RK3288, the PX30 being the only platform supported so far.
> 
> Signed-off-by: Maxime Chevallier <maxime.chevallier@...tlin.com>
> ---
> V3 :
>  - renamed the controller
> 
>  .../bindings/media/rockchip-vip.yaml          | 100 ++++++++++++++++++
>  1 file changed, 100 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/rockchip-vip.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/rockchip-vip.yaml b/Documentation/devicetree/bindings/media/rockchip-vip.yaml
> new file mode 100644
> index 000000000000..652c46053b29
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/rockchip-vip.yaml
> @@ -0,0 +1,100 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/rockchip-vip.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Rockchip VIP Camera Interface
> +
> +maintainers:
> +  - Maxime Chevallier <maxime.chevallier@...tlin.com>
> +
> +description: |-
> +  Camera Interface for Rockcip platforms
> +
> +properties:
> +  compatible:
> +    const: rockchip,px30-vip
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: ACLK
> +      - description: HCLK
> +      - description: PCLK IN
> +
> +  clock-names:
> +    items:
> +      - const: aclk
> +      - const: hclkf
> +      - const: pclkin
> +
> +  resets:
> +    items:
> +      - description: AXI
> +      - description: AHB
> +      - description: PCLK IN
> +
> +  reset-names:
> +    items:
> +      - const: axi
> +      - const: ahb
> +      - const: pclkin
> +
> +  power-domains:
> +    maxItems: 1
> +    description: phandle to the associated power domain

Drop description.

> +
> +  # See ./video-interfaces.txt for details
> +  port:
> +    type: object
> +    additionalProperties: false

Need a description of the data the port represents.

> +
> +    properties:
> +      endpoint:

You can drop 'endpoint' since you don't have any other endpoint 
properties. 

> +        type: object
> +
> +        properties:
> +          remote-endpoint: true
> +
> +        required:
> +          - remote-endpoint
> +
> +    required:
> +      - endpoint
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks

port should be required.

> +
> +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>
> +
> +    vip: vip@...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>, <&cru SCLK_CIF_OUT>;
> +    	clock-names = "aclk", "hclk", "pclkin";
> +    	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 {

Some indentation problems here.

> +                    vip_in: endpoint {
> +                            remote-endpoint = <&tw9900_out>;
> +                    };
> +            };
> +    };
> +...
> -- 
> 2.25.4
>