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:

quoted

Hi Andrej,

On Thu, Oct 29, 2020 at 06:03:11PM +0100, Andrej Valek wrote:

quoted

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