On Fri, Oct 30, 2020 at 10:56:20AM +0100, Hans de Goede wrote: > Hi, > > On 10/29/20 9:36 PM, Dmitry Torokhov wrote: > > Hi Andrej, > > > > On Thu, Oct 29, 2020 at 06:03:11PM +0100, Andrej Valek wrote: > >> Firmware file loadind for GT911 controller takes too much time (~60s). > >> There is no check that configuration is the same which is already present. > >> This happens always during boot, which makes touchscreen unusable. > >> > >> Add there an option to prevent firmware file loading, but keep it enabled > >> by default. > > > > I thought that Goodix was losing firmware loading at poweroff. Is this > > not the case with this model? > > So first of all there are 2 sorts of firmware involved with the > Goodix touchscreen controllers, the actual firmware and a block > of config data for that firmware which I presume adjusts it for > the specific (model of) the digitizer which is attached. > > ATM the mainline Linux driver does not support models where > the actual firmware itself needs to be loaded (because they > only have RAM, so they come up without firmware). > > I do have one model tablet with a ROM-less goodix touchpad > controller, so if I ever find the time I might add support > for loading the actual firmware. > > So what we are talking about here is just loading the config > data and I'm a bit surprised that this take so long. So I am still confused about this: is the config stored in RAM or NVRAM? I.e. do we actually need to re-load it every time on boot, or it supposed to be flashed only when it is changed (or lost)? Thanks. -- Dmitry
