On Thu, Mar 4, 2021 at 4:42 AM Brad Larson [off-list ref] wrote:

The Pensando Elba SoC uses a GPIO based chip select
for two DW SPI busses with each bus having two
chip selects.

Signed-off-by: Brad Larson <redacted>

I agree with Serge's comments here: the existing cs callback should
work for your SoC, you should only need the new compatible string.

I see why you need the special GPIO driver for this now, as that
is obviously driven by totally different hardware.

Yours,
Linus Walleij