[PATCH RFC 1/4] dt-bindings: input: touchscreen: Add Z2 controller bindings.

[Sven Peter]

Hi,


On Fri, Feb 24, 2023, at 12:04, Sasha Finkelstein wrote:
> On Fri, 24 Feb 2023 at 11:55, Mark Kettenis <mark.kettenis at xs4all.nl> wrote:
>
>> What is the motivation for including the firmware name in the device
>> tree rather than constructing it in the driver like what is done for
>> the broadcom wireless?
> There is no way to identify the device subtype before the firmware is
> uploaded, and so i need some way of figuring out which firmware to use.

Some Broadcom bluetooth boards use the compatible of the root node (see
btbcm_get_board_name in drivers/bluetooth/btbcm.c) which would be "apple,jXXX"
for Apple Silicon. I believe the Broadcom WiFi driver has similar logic as well
which marcan had to extend to instead of "brcm,board-type" because different
WiFi boards can me matched to different Apple Silicon boards. I don't think
that's the case for this touchscreen though.



Sven