Re: [PATCH 1/2] riscv: dts: cv1800b: add pinctrl node for cv1800b

Chen Wang
2023-11-14T02:08:06Z

On 2023/11/13 8:57, Jisheng Zhang wrote:
> Add the reset device tree node to cv1800b SoC reusing the
> pinctrl-single driver.
>
> Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
> ---
> arch/riscv/boot/dts/sophgo/cv-pinctrl.h | 19 +++++++++++++++++++
> arch/riscv/boot/dts/sophgo/cv1800b.dtsi | 10 ++++++++++
> 2 files changed, 29 insertions(+)
> create mode 100644 arch/riscv/boot/dts/sophgo/cv-pinctrl.h
>
> diff --git a/arch/riscv/boot/dts/sophgo/cv-pinctrl.h b/arch/riscv/boot/dts/sophgo/cv-pinctrl.h
> new file mode 100644
> index 000000000000..ed78b6fb3142
> --- /dev/null
> +++ b/arch/riscv/boot/dts/sophgo/cv-pinctrl.h
> @@ -0,0 +1,19 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * This header provides constants for pinctrl bindings for Sophgo CV* SoC.
> + *
> + * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
> + */
> +#ifndef _DTS_RISCV_SOPHGO_CV_PINCTRL_H
> +#define _DTS_RISCV_SOPHGO_CV_PINCTRL_H
> +
> +#define MUX_M0 0
> +#define MUX_M1 1
> +#define MUX_M2 2
> +#define MUX_M3 3
> +#define MUX_M4 4
> +#define MUX_M5 5
> +#define MUX_M6 6
> +#define MUX_M7 7
> +
> +#endif
> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> index e04df04a91c0..7a44d8e8672b 100644
> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> @@ -6,6 +6,8 @@
> #include <dt-bindings/interrupt-controller/irq.h>
> #include <dt-bindings/reset/sophgo,cv1800b-reset.h>

Another question:

Does this patch depend on anther patchset "riscv: sophgo: add reset
support for cv1800b"?

If so, you may need to add comments in the cover-letter to clarify this.
But I'm afraid it does not.

>
> +#include "cv-pinctrl.h"
> +
> / {
> compatible = "sophgo,cv1800b";
> #address-cells = <1>;
> @@ -55,6 +57,14 @@ soc {
> dma-noncoherent;
> ranges;
>
> + pinctrl0: pinctrl@3001000 {
> + compatible = "pinctrl-single";
> + reg = <0x3001000 0x130>;
> + #pinctrl-cells = <1>;
> + pinctrl-single,register-width = <32>;
> + pinctrl-single,function-mask = <0x00000007>;
> + };
> +
> rst: reset-controller@3003000 {
> compatible = "sophgo,cv1800b-reset";
> reg = <0x03003000 0x1000>;