On 2013-02-08 15:28, Marcus Lorentzon wrote: > When we do that we stop->setup->start during blanking. So our "DSS" is > optimized to be able to do that without getting blocked. All DSI video > mode panels (and DPI) products we have done so far have not had any > issue with that (as long as DSI HS clock is set to continuous). I think > this approach is less platform dependant, as long as there is no SoC > that take more than a blanking period to reconfigure.
So do you stop, setup and start the link with CPU, and this has to be happen during blanking? Isn't that prone to errors? Or did you mean that the hardware handles that automatically? In OMAP DSS there are so called shadow registers, that can be programmed at any time. The you set a bit (GO bit), which tells the hardware to take the new settings into use at the next vblank.
