linux-kernel - Re: [PATCH 5/5] dt-bindings: clock: Add QCOM SDM630 and SDM660 graphics clock bindings

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Date:   Fri, 4 Dec 2020 23:14:41 -0600
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     kholk11@...il.com
Cc:     agross@...nel.org, sboyd@...nel.org, marijns95@...il.com,
        konradybcio@...il.com, martin.botka1@...il.com,
        linux-arm-msm@...r.kernel.org, phone-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] dt-bindings: clock: Add QCOM SDM630 and SDM660
 graphics clock bindings

On Sat 26 Sep 08:03 CDT 2020, kholk11@...il.com wrote:

> From: AngeloGioacchino Del Regno <kholk11@...il.com>
> 
> Add device tree bindings for graphics clock controller for
> Qualcomm Technology Inc's SDM630 and SDM660 SoCs.
> ---
>  .../bindings/clock/qcom,sdm660-gpucc.yaml     | 75 +++++++++++++++++++
>  1 file changed, 75 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/qcom,sdm660-gpucc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/clock/qcom,sdm660-gpucc.yaml b/Documentation/devicetree/bindings/clock/qcom,sdm660-gpucc.yaml
> new file mode 100644
> index 000000000000..dbb14b274d5b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/qcom,sdm660-gpucc.yaml
> @@ -0,0 +1,75 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/qcom,sdm660-gpucc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Graphics Clock & Reset Controller Binding for SDM630 and SDM660
> +
> +maintainers:
> +  - Taniya Das <tdas@...eaurora.org>
> +
> +description: |
> +  Qualcomm graphics clock control module which supports the clocks, resets and
> +  power domains on SDM630 and SDM660.
> +
> +  See also dt-bindings/clock/qcom,gpucc-sdm660.h.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - qcom,sdm630-gpucc
> +      - qcom,sdm660-gpucc
> +
> +  clocks:
> +    items:
> +      - description: Board XO source
> +      - description: GPLL0 main gpu branch
> +      - description: GPLL0 divider gpu branch
> +
> +  clock-names:
> +    items:
> +      - const: xo
> +      - const: gcc_gpu_gpll0_clk
> +      - const: gcc_gpu_gpll0_div_clk
> +
> +  '#clock-cells':
> +    const: 1
> +
> +  '#reset-cells':
> +    const: 1
> +
> +  '#power-domain-cells':
> +    const: 1
> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - '#clock-cells'
> +  - '#reset-cells'
> +  - '#power-domain-cells'
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/qcom,gcc-sdm660.h>
> +    #include <dt-bindings/clock/qcom,rpmcc.h>
> +
> +    clock-controller@...5000 {
> +      compatible = "qcom,sdm660-gpucc";
> +      #clock-cells = <1>;
> +      #reset-cells = <1>;
> +      #power-domain-cells = <1>;
> +      reg = <0x05065000 0x9038>;
> +      clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>,
> +               <&gcc GCC_GPU_GPLL0_CLK>,
> +               <&gcc GCC_GPU_GPLL0_DIV_CLK>;
> +      clock-names = "xo", "gpll0";

You need 3 clock-names, and they need to match what the binding defines.

Other than that I think it looks good.

Regards,
Bjorn

> +    };
> +...
> -- 
> 2.28.0
>