On 07/04/2022 08:22, Rex-BC Chen wrote: > On Wed, 2022-04-06 at 16:44 +0200, Krzysztof Kozlowski wrote: >> On 06/04/2022 11:46, Rex-BC Chen wrote: >>> The driver data of MT8183 and MT8173 are different. >>> The value of has_gamma for MT8173 is true while the value of MT8183 >>> is >>> false. Therefore, the compatible of disp_aal for MT8183 is not >>> suitable >>> for the compatible for MT8173. >> >> Just because one feature is not supported, it does not mean they are >> incompatible, which you claim in the patch below. Are you sure they >> are >> really incompatible and MT8173 fallback cannot be used? >> >> >> Best regards, >> Krzysztof > > Hello Krzysztof, > > Thanks for your review. > > The difference of disp_aal for each MediaTek SoCs is "has_gamma". > And we only control this variable for different MediaTek SoCs. > > The value of has_gamma for MT8173 is true. > The value of has_gamma for MT8183 is false. (Moreover, the driver data > is null for MT8183) > > From this situation, I think it's not compatible between MT8173 and > MT8183. You repeated the commit msg without bringing any new information... but let it be, I assume setting gamma on MTT8183 is incorrect or produces wrong results. Best regards, Krzysztof