linux-kernel - Re: [PATCH v3 1/3] dt-bindings: pinctrl: Add cix,sky1-pinctrl

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Message-ID: <CACRpkdYX+Hz+LPvSq4vO2Y_JtruokSui-+CvB8dGua0p+FL9Qw@mail.gmail.com>
Date: Tue, 14 Oct 2025 21:17:19 +0200
From: Linus Walleij <linus.walleij@...aro.org>
To: Conor Dooley <conor@...nel.org>
Cc: Gary Yang <gary.yang@...tech.com>, robh@...nel.org, krzk+dt@...nel.org, 
	conor+dt@...nel.org, linux-gpio@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	cix-kernel-upstream@...tech.com
Subject: Re: [PATCH v3 1/3] dt-bindings: pinctrl: Add cix,sky1-pinctrl

On Tue, Oct 14, 2025 at 7:58 PM Conor Dooley <conor@...nel.org> wrote:


> > > +          drive-strength:
> > > +            description:
> > > +              Can support 15 levels, from DS_LEVEL1 to DS_LEVEL15.
> > > +              defined as macros in arch/arm64/boot/dts/cix/sky1-pinfunc.h.

(side note to Gary: drop the reference to the arch/arm64 etc
sky1-pinfunc.h file,
this is Linux-specific and U-Boot and BSD will be confused)

> Isn't this wrong?
> drive-strength is in mA but you're just shoving register values in here.
> pw-bot: changes-requested

That's right, Gary do you think you can add a mA->strength value
translation table into the driver and let this be configured in mA?

> >       type: object
> >       $ref: /schemas/pinctrl/pinmux-node.yaml
> >       $ref: /schemas/pinctrl/pincfg-node.yaml
> >       additionalProperties: false
> >
> > Something like this, I never get this right before actually testcompiling...
>
> spacemit,k1-pinctrl has a node of this type, that can be copied from
> Gary. Essentially, you need an allOf: for the two references.

Neat, thanks Conor!

Yours,
Linus Walleij