I'm trying to figure out the details for the above in the linux kernel for a DSI panel:
If vm->hactive is > 255 it will be cut off since according to the reference manual only the lower 16bit of this register (MIPI_DSI_HOST_DPI_INTFC_DSI_HOST_CFG_DPI_PIXEL_FIFO_SEN) are being used.
would result in all zeros since 256 > 255.
Is this an error in the docs or are we really only looing at the lower 16 bits here (which might be all zeros)?
Also non-continous clock mode is being disabled:
Disabled again here
Why is this being done?
Which board and kernel are you using?
Since this happens in all of NXPs 4.9 kernels (see above link): linux-fslc/nwl-dsi.c at 4.9-2.3.x-imx · Freescale/linux-fslc · GitHub
the board doesn't matter. I'm seeing this on NXPs reference board as well.
If vm->hactive is > 255 it will be cut off since according to the reference manual only the lower 16bit of this register
Scratch the first part please. It's a 16 bit register not an 8 bit one so it can hold values up to 65535.
The non-continous clock mode part is still unclear to me though.