linux-kernel - Re: [PATCH v2] dt-bindings: ata: Add UniPhier controller binding

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Date:   Tue, 14 Feb 2023 10:42:09 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
        Damien Le Moal <damien.lemoal@...nsource.wdc.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Jens Axboe <axboe@...nel.dk>
Cc:     linux-ide@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] dt-bindings: ata: Add UniPhier controller binding

On 14/02/2023 10:33, Kunihiko Hayashi wrote:
> Hi Krzysztof,
> 
> On 2023/02/13 18:10, Krzysztof Kozlowski wrote:
>> On 13/02/2023 05:54, Kunihiko Hayashi wrote:
>>> Add UniPhier SATA controller compatible string to the platform binding.
>>> This controller needs maximum three reset controls.
>>>
>>> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
>>> ---
>>>   .../devicetree/bindings/ata/ahci-platform.yaml  | 17 +++++++++++++++++
>>>   1 file changed, 17 insertions(+)
>>>
>>> Changes since v1:
>>> - Restrict resets property changes with compatible strings
>>> - Fix maxItems from two to three
>>>
>>> diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.yaml
>>> b/Documentation/devicetree/bindings/ata/ahci-platform.yaml
>>> index 7dc2a2e8f598..25dd5ffaa517 100644
>>> --- a/Documentation/devicetree/bindings/ata/ahci-platform.yaml
>>> +++ b/Documentation/devicetree/bindings/ata/ahci-platform.yaml
>>> @@ -45,6 +45,9 @@ properties:
>>>                 - marvell,armada-8k-ahci
>>>                 - marvell,berlin2-ahci
>>>                 - marvell,berlin2q-ahci
>>> +              - socionext,uniphier-pro4-ahci
>>> +              - socionext,uniphier-pxs2-ahci
>>> +              - socionext,uniphier-pxs3-ahci
>>>             - const: generic-ahci
>>>         - enum:
>>
>> Top level is saying reset=1, so did you test your bindings?
> 
> Umm, I didn't see any errors on dt_binding_check, anyway I'll add
> initial minItems:1 and maxItems:3 on top level first.

You need to test also all DTS using these bindings. Yours and others.
If you tested the DTS (with proper binding, not one which is basically
noop):

uniphier-pro4-ace.dtb: sata@...00000: resets: [[27, 12], [27, 28], [37,
3]] is too long

BTW, the patch has other errors - just look at the beginning of the
file. I cannot see it here in the diff, but when you open the file you
should notice it.

Best regards,
Krzysztof