On Wed, Nov 03, 2021 at 12:39:52PM +0000, Eugen.Hristev@xxxxxxxxxxxxx wrote: > On 11/3/21 10:08 AM, Sakari Ailus wrote: > > Hi Eugen, > > > > Thanks for the patch. > > > > On Tue, Nov 02, 2021 at 05:30:08PM +0200, Eugen Hristev wrote: > >> Implement the get_mbus_config callback. > >> ov7740 is a parallel sensor, and according to datasheet, the register > >> REG12 controls the CCIR656 mode. This register is written to 0 in yuyv mode. > >> According to REG12[5] , CCIR656 mode, the behavior is: > >> CCIR656: disabled > >> REG28 controls the polarity of the signals. This register is unused. > >> The default behavior is then: > >> HSYNC polarity : positive > >> VSYNC polarity : positive > >> HREF polarity: positive > >> > > > > Doesn't the receiver driver get this information from DT? > > > > Hi Sakari, > > This patch comes as a result of my discussions with Jacopo, he advised > to get mbus configuration via the get_mbus_config . I agree that this > information can be taken from DT as you said. > In the end , my understanding is that get_mbus_config should be used > only for runtime configuration which can change. > Thus, if all this information is static, then, I will proceed with > obtaining it from DT, and you can disregard this patch, as it is not useful. Yes, please. Getting this from DT is preferred if no dynamic configuration is needed. -- Sakari Ailus
