linux-kernel - Re: [PATCH v3 06/12] dt-bindings: media: venus: Convert msm8916 to DT schema

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Date:   Fri, 3 Jan 2020 16:59:02 -0700
From:   Rob Herring <robh@...nel.org>
To:     Stanimir Varbanov <stanimir.varbanov@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        Vikash Garodia <vgarodia@...eaurora.org>,
        dikshita@...eaurora.org
Subject: Re: [PATCH v3 06/12] dt-bindings: media: venus: Convert msm8916 to
 DT schema

On Mon, Dec 23, 2019 at 01:33:05PM +0200, Stanimir Varbanov wrote:
> Convert qcom,msm8916-venus Venus binding to DT schema
> 
> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@...aro.org>
> ---
>  .../bindings/media/qcom,msm8916-venus.yaml    | 117 ++++++++++++++++++
>  1 file changed, 117 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/qcom,msm8916-venus.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/qcom,msm8916-venus.yaml b/Documentation/devicetree/bindings/media/qcom,msm8916-venus.yaml
> new file mode 100644
> index 000000000000..14331c16135c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/qcom,msm8916-venus.yaml
> @@ -0,0 +1,117 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/media/qcom,msm8916-venus.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Qualcomm Venus video encode and decode accelerators
> +
> +maintainers:
> +  - Stanimir Varbanov <stanimir.varbanov@...aro.org>
> +
> +description: |
> +  The Venus IP is a video encode and decode accelerator present
> +  on Qualcomm platforms
> +
> +properties:
> +  compatible:
> +    const: "qcom,msm8916-venus"

No need for quotes.

> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 3
> +
> +  clock-names:
> +    items:
> +      - const: core
> +      - const: iface
> +      - const: bus
> +
> +  iommus:
> +    minItems: 1
> +    maxItems: 20

You can have 20 IOMMUs attached to the Venus IP? The binding is for 1 
SoC, you should know how many IOMMUs there are.

> +
> +  memory-region:
> +    maxItems: 1
> +
> +  video-decoder:
> +    type: object
> +
> +    properties:
> +      compatible:
> +        const: "venus-decoder"
> +
> +    required:
> +      - compatible
> +
> +    additionalProperties: false
> +
> +  video-encoder:
> +    type: object
> +
> +    properties:
> +      compatible:
> +        const: "venus-encoder"
> +
> +    required:
> +      - compatible
> +
> +    additionalProperties: false
> +
> +  video-firmware:
> +    type: object
> +
> +    description: |
> +      Firmware subnode is needed when the platform does not
> +      have TrustZone.
> +
> +    properties:
> +      iommus:
> +        minItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - power-domains
> +  - clocks
> +  - clock-names
> +  - iommus
> +  - memory-region
> +  - video-decoder
> +  - video-encoder
> +
> +examples:
> +  - |
> +        #include <dt-bindings/interrupt-controller/arm-gic.h>
> +        #include <dt-bindings/clock/qcom,gcc-msm8916.h>
> +
> +        video-codec@...0000 {
> +                compatible = "qcom,msm8916-venus";
> +                reg = <0x01d00000 0xff000>;
> +                interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
> +                clocks = <&gcc GCC_VENUS0_VCODEC0_CLK>,
> +                        <&gcc GCC_VENUS0_AHB_CLK>,
> +                        <&gcc GCC_VENUS0_AXI_CLK>;
> +                clock-names = "core", "iface", "bus";
> +                power-domains = <&gcc VENUS_GDSC>;
> +                iommus = <&apps_iommu 5>;
> +                memory-region = <&venus_mem>;
> +
> +                video-decoder {
> +                        compatible = "venus-decoder";
> +                };
> +
> +                video-encoder {
> +                        compatible = "venus-encoder";
> +                };
> +        };
> -- 
> 2.17.1
>