On Mon, Aug 28, 2023 at 08:37:44PM +0100, Bryan O'Donoghue wrote: > On 28/08/2023 19:47, Laurent Pinchart wrote: > > Hi Bryan, > > > > Thank you for the patch. > > > > On Wed, Aug 23, 2023 at 11:44:36AM +0100, Bryan O'Donoghue wrote: > >> From sdm845 onwards we need to ensure the VFE is powered on prior to > >> switching on the CSID. > > > > Based on the discussions with Konrad in the mail thread, I would record > > here the reason for this requirement. > > > > What happens if you unconditionally power up the VFE prior to switching > > the CSID on ? Will this break something on platforms older than SDM845 ? > > vfe->power_count will bump and you will be fine. Then maybe that would be a simpler solution than having a device-specific power sequence ? -- Regards, Laurent Pinchart
