linux-kernel - Re: [PATCH v8 06/17] dt-bindings: mfd: amd,pensando-elbasr: Add AMD Pensando Elba System Resource chip

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Date:   Thu, 17 Nov 2022 00:41:44 +0000
From:   "Larson, Bradley" <Bradley.Larson@....com>
To:     Rob Herring <robh@...nel.org>, Brad Larson <brad@...sando.io>
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Subject: Re: [PATCH v8 06/17] dt-bindings: mfd: amd,pensando-elbasr: Add AMD
 Pensando Elba System Resource chip

[AMD Official Use Only - General]

From: Rob Herring <robh@...nel.org>
Sent: Wednesday, November 16, 2022 2:30 PM

>> v8:
>>  - Apply review request changes and picked the two unique examples
>>    for the 4 chip-selects as one has the reset control support and
>>    the other an interrupt.  Missed the --in-reply-to in git
>>    send-email for v7, included in this update.
>
>No, you haven't. By default in git, you don't have to do anything. See
>--thread and --no-chain-reply-to options. If you are messing with
>--in-reply-to, you are doing it wrong.
>
>Please resend the whole series properly threaded.

Will resend the series

>> diff --git a/Documentation/devicetree/bindings/mfd/amd,pensando-elbasr.yaml b/Documentation/devicetree/bindings/mfd/amd,pensando-elbasr.yaml
>> new file mode 100644
>> index 000000000000..622c93402a86
>> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/amd,pensando-elbasr.yaml
>> @@ -0,0 +1,60 @@
...
>> +
>> +title: AMD Pensando Elba SoC Resource Controller
>> +
>> +description: |
>> +  AMD Pensando Elba SoC Resource Controller functions are
>> +  accessed with four chip-selects.  Reset control is on CS0.
>
> One device with 4 chip-selects? Then I'd expect 'reg = <0 1 2 3>;'
>
> Hard to say more because I don't have the whole thread nor remember what
> exactly we discussed before. That was 100s of bindings ago...

I agree and the example for v7 had all 4 chip-selects shown.  This is not a pick and
choose device on what functions to use for a usable system.  Krzysztof requested
only showing two chip-selects in the example.
...
>> +examples:
>> +  - |
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +
>> +    spi {
>> +        #address-cells = <1>;
>> +        #size-cells = <0>;
>> +        num-cs = <4>;
>> +
>> +        system-controller@0 {
>> +            compatible = "amd,pensando-elbasr";
>> +            reg = <0>;
>> +            spi-max-frequency = <12000000>;
>> +            #reset-cells = <1>;
>> +        };
>> +
>> +        system-controller@2 {
>> +            compatible = "amd,pensando-elbasr";
>> +            reg = <2>;
>> +            spi-max-frequency = <12000000>;
>> +            interrupt-parent = <&porta>;
>> +            interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
>> +        };
>> +    };

Regards,
Brad