Hi Alain, > we are also using the GC2145 sensor but in a CSI based environment. > > We are in contact with GalaxyCore and following discussions we had with them > and data they provided us with, we've made a driver for that, supporting for > the time being 3 different resolutions via the CSI interface. > > The driver is available on the STMicroelectronics STM32 github [1]. > > If you are ok with that, we could go further upstreaming it while testing/adding > features necessary for the PinePhone. > > [1] https://github.com/STMicroelectronics/linux/blob/v5.15-stm32mp/drivers/media/i2c/gc2145.c I've implemented basic parallel bus support to check your driver [1] on the PinePhone. My changes are here [2]. With your driver results are much better in compare to Megi's driver (I'm still glad, that Megi has written one). See pictures for comparison here [3]. Access to vendor support and (probably) documentation gives great results. I'd recommend to replace more of hard-coded parts of initialization sequences with functions like in proposed Megi's driver. So this will be clearer what different register values mean. Since you have access to support channel/documentation it'd be easier for you to do. It'd be nice to have at least some gc2145 driver in mainline. Do you still have plans/time to mainline driver? P.S. Alain, I don't see your address in the list of recipients of last Pavel's response. In case you have not received it, it's here [4]. 1. https://github.com/STMicroelectronics/linux/blob/v6.1-stm32mp/drivers/media/i2c/gc2145.c 2. https://github.com/AndreySV/linux/commit/f06ff60eb7a664dcafa8d40901a1ab0f59071529 3. https://github.com/AndreySV/linux/issues/1 4. https://lwn.net/ml/linux-kernel/Y6tGfxrq/Mh1JoA9@xxxxxxxxxx -- Best regards, Andrey Skvortsov
