linux-kernel - Re: [PATCH v2 2/3] dt-bindings: clock: add SM6375 QCOM global clock bindings

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Message-ID: <887b005d-750d-39f2-73b7-851aa0e461f4@somainline.org>
Date:   Wed, 20 Jul 2022 21:36:30 +0200
From:   Konrad Dybcio <konrad.dybcio@...ainline.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        ~postmarketos/upstreaming@...ts.sr.ht
Cc:     martin.botka@...ainline.org,
        angelogioacchino.delregno@...ainline.org,
        marijn.suijten@...ainline.org, jamipkettunen@...ainline.org,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/3] dt-bindings: clock: add SM6375 QCOM global clock
 bindings



On 20.07.2022 08:27, Krzysztof Kozlowski wrote:
> On 19/07/2022 13:57, Konrad Dybcio wrote:
>> Add device tree bindings for global clock controller for SM6375 SoCs.
>>
>> Signed-off-by: Konrad Dybcio <konrad.dybcio@...ainline.org>
>> ---
>> Changes since v1:
>> - dropped clock-names (switched to .index)
>>
>>  .../bindings/clock/qcom,sm6375-gcc.yaml       |  65 +++++
>>  include/dt-bindings/clock/qcom,sm6375-gcc.h   | 234 ++++++++++++++++++
>>  2 files changed, 299 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/clock/qcom,sm6375-gcc.yaml
>>  create mode 100644 include/dt-bindings/clock/qcom,sm6375-gcc.h
>>
>> diff --git a/Documentation/devicetree/bindings/clock/qcom,sm6375-gcc.yaml b/Documentation/devicetree/bindings/clock/qcom,sm6375-gcc.yaml
>> new file mode 100644
>> index 000000000000..2e43cd75d3d4
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/qcom,sm6375-gcc.yaml
>> @@ -0,0 +1,65 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/clock/qcom,sm6375-gcc.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Qualcomm Global Clock & Reset Controller Binding for SM6375
>> +
>> +maintainers:
>> +  - Konrad Dybcio <konrad.dybcio@...ainline.org>
>> +
>> +description: |
>> +  Qualcomm global clock control module which supports the clocks, resets and
>> +  power domains on SM6375
>> +
>> +  See also:
>> +  - dt-bindings/clock/qcom,sm6375-gcc.h
>> +
> 
> Why you are not referencing qcom,gcc.yaml?
Hm.. Out of all the SoCs we support, only apq8084 and apq/ipq8064 reference it..
Should I add that?

Konrad


> 
>> +properties:
>> +  compatible:
>> +    const: qcom,sm6375-gcc
>> +
>> +  clocks:
>> +    items:
>> +      - description: Board XO source
>> +      - description: Board XO Active-Only source
>> +      - description: Sleep clock source
>> +
>> +  '#clock-cells':
>> +    const: 1
>> +
>> +  '#reset-cells':
>> +    const: 1
>> +
>> +  '#power-domain-cells':
>> +    const: 1
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - clocks
>> +  - '#clock-cells'
>> +  - '#reset-cells'
>> +  - '#power-domain-cells'
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/clock/qcom,rpmcc.h>
>> +    clock-controller@...0000 {
>> +      compatible = "qcom,sm6375-gcc";
>> +      reg = <0x01400000 0x1f0000>;
>> +      clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>,
>> +               <&rpmcc RPM_SMD_XO_A_CLK_SRC>,
>> +               <&sleep_clk>;
>> +      #clock-cells = <1>;
>> +      #reset-cells = <1>;
>> +      #power-domain-cells = <1>;
>> +    };
>> +
>> +...
>> diff --git a/include/dt-bindings/clock/qcom,sm6375-gcc.h b/include/dt-bindings/clock/qcom,sm6375-gcc.h
>> new file mode 100644
>> index 000000000000..1e9801e1cedf
>> --- /dev/null
>> +++ b/include/dt-bindings/clock/qcom,sm6375-gcc.h
>> @@ -0,0 +1,234 @@
>> +/* SPDX-License-Identifier: GPL-2.0-only */
> 
> Hm, Qualcomm gave permission to relicense bindings to dual-license,
> although I am not sure how this works with files where copyrights were
> transferred to Linux Foundation...
> 
>> +/*
>> + * Copyright (c) 2021, The Linux Foundation. All rights reserved.
>> + * Copyright (c) 2022, Konrad Dybcio <konrad.dybcio@...ainline.org>
>> + */
>> +
>> +#ifndef _DT_BINDINGS_CLK_QCOM_GCC_SM6375_H
>> +#define _DT_BINDINGS_CLK_QCOM_GCC_SM6375_H
>> +
> 
> 
> Best regards,
> Krzysztof