linux-kernel - Re: [PATCH 04/13] arm64: dts: renesas: r9a09g087: Add pinctrl node

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Message-ID: <CAMuHMdX=8rdWHyTpUmreOy5Nf-kiAoQMVakU051AyC2BoVP8vA@mail.gmail.com>
Date: Mon, 18 Aug 2025 15:33:51 +0200
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Prabhakar <prabhakar.csengg@...il.com>
Cc: Magnus Damm <magnus.damm@...il.com>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	linux-renesas-soc@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Biju Das <biju.das.jz@...renesas.com>, 
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>, 
	Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH 04/13] arm64: dts: renesas: r9a09g087: Add pinctrl node

Hi Prabhakar,

On Tue, 12 Aug 2025 at 22:03, Prabhakar <prabhakar.csengg@...il.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>
> Add pinctrl node to RZ/N2H ("R9A09G087") SoC DTSI.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Thanks for your patch!

> --- a/arch/arm64/boot/dts/renesas/r9a09g087.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r9a09g087.dtsi
> @@ -5,6 +5,17 @@
>   * Copyright (C) 2025 Renesas Electronics Corp.
>   */
>
> +#define RZN2H_PINS_PER_PORT    8
> +
> +/*
> + * Create the pin index from its bank and position numbers and store in
> + * the upper 16 bits the alternate function identifier
> + */
> +#define RZN2H_PORT_PINMUX(b, p, f)     ((b) * RZN2H_PINS_PER_PORT + (p) | ((f) << 16))
> +
> +/* Convert a port and pin label to its global pin index */
> +#define RZN2H_GPIO(port, pin)  ((port) * RZN2H_PINS_PER_PORT + (pin))

Shouldn't this be in a header file under include/dt-bindings/pinctrl/?
Else you have to duplicate these definitions in DT overlays.

The rest LGTM, so
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

Gr{oetje,eeting}s,

                        Geert


--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds