linux-kernel - Re: [PATCH v4 2/3] dt-bindings: remoteproc: qcom: Convert SC7280 MSS bindings to YAML

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Date:   Tue, 24 May 2022 07:52:53 +0530
From:   Sibi Sankar <quic_sibis@...cinc.com>
To:     Stephen Boyd <swboyd@...omium.org>, <bjorn.andersson@...aro.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <robh+dt@...nel.org>
CC:     <ohad@...ery.com>, <agross@...nel.org>,
        <mathieu.poirier@...aro.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-remoteproc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <mka@...omium.org>
Subject: Re: [PATCH v4 2/3] dt-bindings: remoteproc: qcom: Convert SC7280 MSS
 bindings to YAML



On 5/21/22 1:40 AM, Stephen Boyd wrote:
> Quoting Sibi Sankar (2022-05-20 11:46:58)
>> On 5/20/22 4:05 AM, Stephen Boyd wrote:
>>> Quoting Sibi Sankar (2022-05-19 09:47:04)
>>>> diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml
>>>> new file mode 100644
>>>> index 000000000000..a936d84eefa6
>>>> --- /dev/null
>>>> +++ b/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml
>>>> +        resets = <&aoss_reset AOSS_CC_MSS_RESTART>,
>>>> +                 <&pdc_reset PDC_MODEM_SYNC_RESET>;
>>>> +        reset-names = "mss_restart", "pdc_reset";
>>>> +
>>>> +        qcom,halt-regs = <&tcsr_mutex 0x23000 0x25000 0x28000 0x33000>;
>>>> +        qcom,ext-regs = <&tcsr 0x10000 0x10004 &tcsr_mutex 0x26004 0x26008>;
>>>
>>> Because it's two items I'd expect:
>>>
>>>        <&tcsr 0x10000 0x10004>, <&tcsr_mutex 0x26004 0x26008>;
>>
>> I guess both the ways work since the driver uses
>> of_parse_phandle_with_fixed_args.
> 
> See commit 39bd2b6a3783 ("dt-bindings: Improve phandle-array schemas")
> for why the way you have it is not preferred.

Sure, I'll fix the dt up and update the example.

-Sibi

>