Re: [PATCH v4 0/4] ARM: s3c: crag6410: Convert to software nodes and properties

[Dmitry Torokhov]

On Mon, Oct 26, 2026 at 02:51:16PM +0100, Arnd Bergmann wrote:
> On Sun, Oct 25, 2026, at 06:03, Dmitry Torokhov wrote:
> > Hi,
> >
> > This series converts the Cragganmore 6410 board to generic software nodes
> > and device properties, allowing the removal of legacy GPIO lookup tables.
> >
> > We add software node propagation support to the wm831x MFD core to route
> > DVS GPIOs to the PMIC regulator, and convert the peripherals on the
> > Cragganmore board (PMIC DVS GPIO, basic-mmio-gpio, LEDs, WM1250, and SPI0)
> > from legacy GPIO lookup tables to software nodes and properties. This
> > eliminates the legacy GPIO lookup tables on the board and fixes incorrect
> > GPIO chip names from previous conversions.
> >
> > Hopefully Krzysztof can finish merging the series through the soc tree
> > once Lee acks the MFD part.
> 
> Hi Dmitry,
> 
> This all looks good to me,
> 
> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
> 
> I'm a bit unsure about how this fits into your wider plan, i.e. why it
> is helpful to replace the lookup tables with device properties in
> this file:
> Are you working towards eliminating all gpio lookup tables from
> the ~50 files currently defining them, or is there an immediate
> benefit to doing this one in particular even without the others?

Yes, I would like to eventually remove the lookup tables and rely only
on software nodes. How quickly I can do that is a big question, but
I'll try ;)

> 
> Do you plan to also eliminate the uses of the legacy gpio
> interfaces in mach-s3c, e.g. the hardcoded numbers
> in {pca953x,wm831x}_platform_data, crag6410_lcd_power_set(),
> crag6410_machine_init(), or the pin config in
> s3c64xx_i2s_cfg_gpio()?

Let me take a look.

Thanks.

-- 
Dmitry