Re: [PATCH 08/14] mfd: remove unused aat2870 driver

["Arnd Bergmann" <arnd@arndb.de>]

On Tue, Nov 10, 2026, at 16:39, Nuno Sá wrote:
> On Sat, Sep 12, 2026 at 11:20:47PM +0100, Jonathan Cameron wrote:
>> On Thu, 10 Sep 2026 20:14:15 +0200 "Arnd Bergmann" <arnd@arndb.de> wrote:

>> > drivers/iio/adc/ad7793.c
>> Maybe. Analog devices ack needed.
>> 
>> Production part but this one indeed fails to probe.  Analog
>> folk, do you want to fix this one up?
>
> Given it's production we should fix. Looking at platdata seems to nicely
> fir in DT. Issue is that I don't have HW with me to test. So I'll maybe
> just remove platdata and assume some defaults.

Sounds good. I already dropped my removal patch for this one.

>> > drivers/iio/frequency/ad9523.c
>> Maybe. Analog Devices ack needed.
>> 
>
> Hmm we definitely use this one and we have OF support out of tree with
> likely some DT abuse of what can be in DT or not. Not sure if I have
> some HW around but we'll need to fix it.
>
> In general for ADI parts, I think we can drop the ones that are not
> recommended for new designs. All the others I tempted to say we should
> keep. Naturally we need to fix all the drivers that do not compile
> without platdata. And for the ones with defaults we can also just remove
> platdata and use the plain defaults.

Ok, I'll leave it alone as well now.

I currently still have patches to remove adp8860/8870 (backlight), ad7877
(touchscreen), ad714x (touch) and adxl34x (input, not the iio one), which
are currently unusable with DT but are all listed as in production.

I assume you want to fix all of these and keep them in the kernel,
but possibly still remove the adxl34x and only keep the IIO driver for
that part?

I also have patches to remove platform_data probing from ad5761, adf4350,
ad5791, ad5421 and ad5504, these all have DT support.

See 
https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git/log/?h=board-remove-7.4
for the updated series. I hope to slowly get through that. Let
me know if you want me to skip any more of those patches.

Thanks,

    Arnd