Re: [PATCH 06/13] arm64: dts: mediatek: mt8188: Update VPPSYS node name and compatible

[Krzysztof Kozlowski]

On 10/09/2024 07:12, Fei Shao wrote:
> On Mon, Sep 9, 2024 at 7:41 PM Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote:
>>
>> On 09/09/2024 13:14, Fei Shao wrote:
>>> Use and add "syscon" in VPPSYS node names and compatible to fix errors
>>> from `make CHECK_DTBS=y mediatek/mt8188-evb.dtb`.
>>>
>>> Signed-off-by: Fei Shao <fshao@xxxxxxxxxxxx>
>>> ---
>>>
>>>  arch/arm64/boot/dts/mediatek/mt8188.dtsi | 8 ++++----
>>>  1 file changed, 4 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/mediatek/mt8188.dtsi b/arch/arm64/boot/dts/mediatek/mt8188.dtsi
>>> index 2900d78b7ceb..14e51a11f688 100644
>>> --- a/arch/arm64/boot/dts/mediatek/mt8188.dtsi
>>> +++ b/arch/arm64/boot/dts/mediatek/mt8188.dtsi
>>> @@ -1799,8 +1799,8 @@ mfgcfg: clock-controller@13fbf000 {
>>>                       #clock-cells = <1>;
>>>               };
>>>
>>> -             vppsys0: clock-controller@14000000 {
>>> -                     compatible = "mediatek,mt8188-vppsys0";
>>> +             vppsys0: syscon@14000000 {
>>> +                     compatible = "mediatek,mt8188-vppsys0", "syscon";
>>
>> If this was working before, it looks like this is not a syscon and
>> bindings need to be fixed.
> 
> I guess it's because the binding was later updated in commit
> 26bcd8a53098 ("dt-bindings: arm: mediatek: mmsys: Add VPPSYS
> compatible for MT8188"), and the corresponding DT update was unnoticed
> at the time.
> If that makes sense then this should be a valid fix.

Not necessarily. Why not fixing bindings? Prove that bindings are
correct, not DTS, first.

Best regards,
Krzysztof