Re: [PATCH 3/3] ARM: spitz: Use software nodes for the ADS7846 touchscreen

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

On Thu, May 02, 2024 at 10:13:44AM +0200, Linus Walleij wrote:
> On Tue, Apr 30, 2024 at 9:04 AM Linus Walleij <linus.walleij@linaro.org> wrote:
> 
> > Convert the Spitz to use software nodes for SPI CS and the
> > ADS7846 touchscreen following the pattern used in the TI
> > platforms.
> >
> > The Spitz is the only user of the wait_for_sync() callback in
> > the platform data, so define that this is a separate GPIO
> > in the device tree bindings (previous patch) and handle this
> > directly inside the ADS7846 driver instead.
> >
> > Add some infrastructure to the PXA boardfile common code to
> > handle software nodes attached to the SPI bus instead of
> > platform data.
> >
> > The SPI core will investigate the numner of GPIO handles to
> > figure out the number of chipselects used on the platform, so
> > no explicit encoding of the number of the number of chipselects
> > is needed.
> >
> > Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> 
> Andy's patch series makes the Spitz SPI much cleaner to begin
> with so I will hold this off and rebase on top of Andy's stuff once
> that is in.

I dropped spitz parts from the patch leaving only the new hsync gpio
handling (and keeping the old legacy way of doing hsync) and applied.

There's an immutable branch ib/ads6746-hsync in my tree to help us
iterate on spitz changes.

Thanks.

-- 
Dmitry