[PATCH 08/21] dt-bindings: mfd: x-powers: add AC200

[James Hilliard]

On Mon, Aug 3, 2026 at 1:07 AM Krzysztof Kozlowski <krzk at kernel.org> wrote:
>
> On 03/08/2026 07:14, James Hilliard wrote:
> > The AC200 is an I2C-controlled mixed-signal companion IC containing
> > audio, video, RTC and Fast Ethernet PHY functions.
>
> This fails when applied, because you did not explain the
> dependencies/merging of this patchset.
>
> This is THE MOST important information of cover letter. The first thing
> to explain.

I did mention in the cover letter that the pwm series is a dependency:
https://lore.kernel.org/all/20260703152215.192859-1-richard.genoud@bootlin.com/

With the pwm series first this should apply on top of master. Should
I just mention that it applies on master or should I reference a specific
commit hash or something?

> >
> > Describe the parent device, its input clock, required function supplies,
> > the optional SID bandgap calibration cell used by the vendor initialization
> > sequence, and its optional Ethernet PHY control child. Document the 24 and
> > 27 MHz rates encoded by the public EPHY clock selector.
> >
>
> ...
>
> > +required:
> > +  - compatible
> > +  - reg
> > +  - clocks
> > +  - ac-ldoin-supply
> > +  - ephy-vcc-supply
> > +  - rtc-vcc-supply
> > +  - tv-vcc-supply
> > +
> > +dependencies:
> > +  interrupts: [ interrupt-controller ]
> > +  interrupt-controller: [ '#interrupt-cells', interrupts ]
> > +  '#interrupt-cells': [ interrupt-controller ]
> > +  nvmem-cells: [ nvmem-cell-names ]
> > +  nvmem-cell-names: [ nvmem-cells ]
>
> Why do you need all these dependencies? What are you trying to express?

Looks like we probably can get rid of all except these:
interrupt-controller: [ interrupts ]
nvmem-cells: [ nvmem-cell-names ]

I was just trying to express the MFD controller dependencies.

> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/interrupt-controller/irq.h>
> > +
> > +    i2c {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        mixed-signal at 10 {
>
> ...
>
> > +...
> > diff --git a/include/dt-bindings/mfd/x-powers,ac200.h b/include/dt-bindings/mfd/x-powers,ac200.h
> > new file mode 100644
> > index 000000000000..cc59e2ab4912
> > --- /dev/null
> > +++ b/include/dt-bindings/mfd/x-powers,ac200.h
> > @@ -0,0 +1,13 @@
> > +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
> > +/*
> > + * Interrupt numbers of the X-Powers AC200 interrupt controller.
> > + */
> > +
> > +#ifndef _DT_BINDINGS_MFD_X_POWERS_AC200_H
> > +#define _DT_BINDINGS_MFD_X_POWERS_AC200_H
> > +
> > +#define AC200_IRQ_TVE                        0
> > +#define AC200_IRQ_EPHY                       1
> > +#define AC200_IRQ_RTC                        2
>
> Hardware constants are not really bindings, even though you use them in
> the driver.

Should I do something different for this?

>
> > +
> > +#endif /* _DT_BINDINGS_MFD_X_POWERS_AC200_H */
> >
>
>
> Best regards,
> Krzysztof