Hi Chun-Kuang, Le lun. 13 mars 2023 à 16:17, Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx> a écrit : > > Hi, Alexandre: > > Alexandre Mergnat <amergnat@xxxxxxxxxxxx> 於 2023年3月9日 週四 下午10:23寫道： > > > > From: Fabien Parent <fparent@xxxxxxxxxxxx> > > > > DPI for MT8365 is compatible with MT8192 but requires an additional > > clock. Modify the documentation to requires this clock only on MT8365 SoCs. > > If MT8365 DPI has additional clock, why it is compatible with MT8192 DPI? > I think some part of MT8165 DPI works under the speed control by the > DPI clock and this is different with MT8192 DPI, how could these two > are compatible? AFAII, The mtk_dpi driver manage the 4th clock as optional dpi->dpi_clk = devm_clk_get_optional(dev, "dpi"); And all configuration variables for mt8192 are the same for mt8365. These configuration clock variables (like cal_factor) aren't correlated with the 4th clock. The clock number doesn't impact the configuration variable because the 4th clock is simply retrieved from DTS, saved in the driver structure and prepare/unprepare/enable/disable, like other clocks. Regards, Alex
