[PATCH 12/17] dt-bindings: pinctrl: add k1 support

[Yao Zi]

On Sat, Jan 17, 2026 at 02:01:46PM -0500, Raymond Mao wrote:
> From: Raymond Mao <raymond.mao at riscstar.com>
> 
> Add dt-binding file of pinctrl driver for Spacemit K1 SoC.
> 
> Signed-off-by: Raymond Mao <raymond.mao at riscstar.com>
> ---
>  include/dt-bindings/pinctrl/k1-pinctrl.h | 59 ++++++++++++++++++++++++
>  1 file changed, 59 insertions(+)
>  create mode 100644 include/dt-bindings/pinctrl/k1-pinctrl.h
> 
> diff --git a/include/dt-bindings/pinctrl/k1-pinctrl.h b/include/dt-bindings/pinctrl/k1-pinctrl.h
> new file mode 100644
> index 00000000000..6c6b223c969
> --- /dev/null
> +++ b/include/dt-bindings/pinctrl/k1-pinctrl.h
> @@ -0,0 +1,59 @@
> +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
> +/*
> + * Copyright (C) 2025-2026 RISCStar Ltd.
> + */
> +
> +#ifndef __DT_BINDINGS_K1_PINCTRL_H
> +#define __DT_BINDINGS_K1_PINCTRL_H
> +
> +/* pin mux */
> +#define MUX_MODE0	0
> +#define MUX_MODE1	1
> +#define MUX_MODE2	2
> +#define MUX_MODE3	3
> +#define MUX_MODE4	4
> +#define MUX_MODE5	5
> +#define MUX_MODE6	6
> +#define MUX_MODE7	7
> +
> +/* strong pull resistor */
> +#define SPU_EN		BIT(3)
> +
> +/* edge detect */
> +#define EDGE_NONE	BIT(6)
> +#define EDGE_RISE	BIT(4)
> +#define EDGE_FALL	BIT(5)
> +#define EDGE_BOTH	(EDGE_RISE | EDGE_FALL)
> +
> +/* slew rate output control */
> +#define SLE_EN		BIT(7)
> +
> +/* schmitter trigger input threshold */
> +#define ST00		(0 << 8)
> +#define ST01		BIT(8)
> +#define ST02		BIT(9)
> +#define ST03		(BIT(8) | BIT(9))
> +
> +/* driver strength*/
> +#define PAD_DS_3V	BIT(10)
> +#define PAD_DS_SLOW0	(0 << 11)
> +#define PAD_DS_SLOW1	BIT(11)
> +#define PAD_DS_MEDIUM	BIT(12)
> +#define PAD_DS_FAST	(BIT(11) | BIT(12))
> +
> +#define PAD_1V8_DS0	PAD_DS_SLOW0
> +#define PAD_1V8_DS1	PAD_DS_SLOW1
> +#define PAD_1V8_DS2	PAD_DS_MEDIUM
> +#define PAD_1V8_DS3	PAD_DS_FAST
> +
> +#define PAD_3V_DS0	(PAD_DS_SLOW0 | PAD_DS_3V)
> +#define PAD_3V_DS1	(PAD_DS_SLOW1 | PAD_DS_3V)
> +#define PAD_3V_DS2	(PAD_DS_MEDIUM | PAD_DS_3V)
> +#define PAD_3V_DS3	(PAD_DS_FAST | PAD_DS_3V)
> +
> +/* pull up/down */
> +#define PULL_DIS	(0 << 13)	/* bit[15:13] 000 */
> +#define PULL_UP		(6 << 13)	/* bit[15:13] 110 */
> +#define PULL_DOWN	(5 << 13)	/* bit[15:13] 101 */
> +
> +#endif /* __DT_BINDINGS_K1_PINCTRL_H */

These definitions look like hardware bits instead of dt-bindings, and I
don't see a binding file for the pinctrl driver of SpacemiT K1 in Linux
upstream. If it's the case, please keep the definitions inside your
driver, correct the commit description, and probably squash it into the
driver patch.

Thanks,
Yao Zi