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

[Krzysztof Kozlowski <krzk@kernel.org>]

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.

> 
> 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?

> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        mixed-signal@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.

> +
> +#endif /* _DT_BINDINGS_MFD_X_POWERS_AC200_H */
> 


Best regards,
Krzysztof