Re: [PATCH v4 1/7] dt-bindings: pinctrl: renesas: Add alpha-numerical port support for RZ/V2H

[Rob Herring <robh@kernel.org>]

On Mon, Dec 16, 2024 at 07:53:11PM +0000, Biju Das wrote:
> RZ/V2H has ports P0-P9 and PA-PB. Add support for defining alpha-numerical
> ports in DT using RZV2H_* macros.
> 
> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
> ---
> v3->v4:
>  * Added new header file with separate RZV2H_P* definitions.
> v3:
>  * New patch.
> ---
>  .../pinctrl/renesas,r9a09g057-pinctrl.h       | 31 +++++++++++++++++++
>  1 file changed, 31 insertions(+)
>  create mode 100644 include/dt-bindings/pinctrl/renesas,r9a09g057-pinctrl.h
> 
> diff --git a/include/dt-bindings/pinctrl/renesas,r9a09g057-pinctrl.h b/include/dt-bindings/pinctrl/renesas,r9a09g057-pinctrl.h
> new file mode 100644
> index 000000000000..9008a7e71609
> --- /dev/null
> +++ b/include/dt-bindings/pinctrl/renesas,r9a09g057-pinctrl.h
> @@ -0,0 +1,31 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
> +/*
> + * This header provides constants for Renesas RZ/V2H family pinctrl bindings.
> + *
> + * Copyright (C) 2024 Renesas Electronics Corp.
> + *
> + */
> +
> +#ifndef __DT_BINDINGS_RZV2H_PINCTRL_H
> +#define __DT_BINDINGS_RZV2H_PINCTRL_H
> +
> +#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
> +
> +/* RZV2H_Px = Offset address of PFC_P_mn  - 0x20 */
> +#define RZV2H_P0	0
> +#define RZV2H_P1	1
> +#define RZV2H_P2	2
> +#define RZV2H_P3	3
> +#define RZV2H_P4	4
> +#define RZV2H_P5	5
> +#define RZV2H_P6	6
> +#define RZV2H_P7	7
> +#define RZV2H_P8	8
> +#define RZV2H_P9	9
> +#define RZV2H_PA	10
> +#define RZV2H_PB	11

I'm not a fan of defines which are just 'FOO_n n'. And these are if you 
speak hex.

> +
> +#define RZV2H_PORT_PINMUX(b, p, f)	RZG2L_PORT_PINMUX(RZV2H_P##b, p, f)
> +#define RZV2H_GPIO(port, pin)		RZG2L_GPIO(RZV2H_P##port, pin)

So the user does RZV2H_GPIO(A, 123) instead of RZV2H_GPIO(0xA, 123)? Not 
sure the bounds checking the port is worth it. pin or function can still 
be crap.

Rob