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SubjectRe: [PATCH 15/18] dt-bindings: usb: meson-g12a-usb: Discard FL-adj property
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Hi,

On 12/10/2020 16:22, Serge Semin wrote:
> On Mon, Oct 12, 2020 at 09:54:25AM +0200, Neil Armstrong wrote:
>> Hi,
>>
>> On 11/10/2020 00:41, Serge Semin wrote:
>>> An empty snps,quirk-frame-length-adjustment won't cause any change
>>> performed by the driver. Moreover the DT schema validation will fail,
>>> since it expects the property being assigned with some value. So just
>>> discard the property declaration then from the example.
>>>
>>> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
>>>
>>> ---
>>>
>>> Note the same problem is in the DT source file
>>> arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi .
>>> ---
>>> .../devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml | 1 -
>>> 1 file changed, 1 deletion(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml b/Documentation/devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml
>>> index 5b04a7dfa018..88184d7e26cc 100644
>>> --- a/Documentation/devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml
>>> +++ b/Documentation/devicetree/bindings/usb/amlogic,meson-g12a-usb-ctrl.yaml
>>> @@ -209,6 +209,5 @@ examples:
>>> interrupts = <30>;
>>> dr_mode = "host";
>>> snps,dis_u2_susphy_quirk;
>>> - snps,quirk-frame-length-adjustment;
>>> };
>>> };
>>>
>>
>
>> Thanks for reporting this, actually the fladj must be 0x20 on this hw,
>> but we do set this on the PHY side, so we can let the dwc3 side 0 here.
>
> I can convert this patch to initializing the "snps,quirk-frame-length-adjustment"
> property with 0x20 value instead. Since most likely I'll have to send a v2/v3/etc
> of this patchset, that modification won't be too much work to do. What do you think?

Yes, do this please, anyway it's only an example so it's ok.

>
> Anyway please note, that I've fixed the improper property usage in the DT schema
> example only. "snps,quirk-frame-length-adjustment" defined as boolean still
> persists in the DTS file: arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi .
> So if you ever try to validate that dts file with "make dtbs_check" scenario, it
> will fail.

Yes, I'll push a fix to pass the dtbs_check when this is merged.

Thanks,
Neil

>
> -Sergey
>
>>
>> Acked-by: Neil Armstrong <narmstrong@baylibre.com>
>>
>> Neil
>>

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