[PATCH v2 3/4] riscv: dts: spacemit: add pinctrl support for K1 SoC

[Inochi Amaoto]

On Sun, Aug 25, 2024 at 01:10:04PM GMT, Yixun Lan wrote:
> Add pinctrl device tree data to SpacemiT's K1 SoC.
> 
> Signed-off-by: Yixun Lan <dlan at gentoo.org>
> ---
> Note, only minimal device tree data added in this series,
> which just try to demonstrate this pinctrl driver, but
> more dt data can be added later, in separate patches.
> ---
>  arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 19 +++++++++++++++++++
>  arch/riscv/boot/dts/spacemit/k1.dtsi         |  5 +++++
>  2 files changed, 24 insertions(+)
> 
> diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
> new file mode 100644
> index 0000000000000..38ccaad1209f5
> --- /dev/null
> +++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
> @@ -0,0 +1,19 @@
> +// SPDX-License-Identifier: GPL-2.0 OR MIT
> +/*
> + * Copyright (c) 2024 Yixun Lan <dlan at gentoo.org>
> + */
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/pinctrl/spacemit,k1-pinctrl.h>
> +


> +&pinctrl {
> +	uart0_2_cfg: uart0-2-cfg {
> +		uart0-2-pins {
> +			pinmux = <K1_PADCONF(GPIO_68, 2)>,
> +				 <K1_PADCONF(GPIO_69, 2)>;
> +
> +			bias-pull-up;
> +			drive-strength-microamp = <32>;
> +		};
> +	};
> +};

No common file is needed at least for now. You can put it
in the board dts. Also, squash this into the next patch as
it is more related to the uart.

> diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi
> index 0777bf9e01183..a2d5f7d4a942a 100644
> --- a/arch/riscv/boot/dts/spacemit/k1.dtsi
> +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi
> @@ -416,6 +416,11 @@ uart9: serial at d4017800 {
>  			status = "disabled";
>  		};
>  
> +		pinctrl: pinctrl at d401e000 {
> +			compatible = "spacemit,k1-pinctrl";
> +			reg = <0x0 0xd401e000 0x0 0x400>;
> +		};
> +
>  		plic: interrupt-controller at e0000000 {
>  			compatible = "spacemit,k1-plic", "sifive,plic-1.0.0";
>  			reg = <0x0 0xe0000000 0x0 0x4000000>;
> 
> -- 
> 2.45.2
>