Re: [PATCH 5/5] riscv: dts: sophgo: Add LicheeRV Nano board device tree

Inochi Amaoto
2024-05-27T22:25:36Z

On Mon, May 27, 2024 at 12:28:21PM GMT, Thomas Bonnefille wrote:
> LicheeRV Nano [1] is an embedded development platform base on the SOPHGO
> SG2002 chip.
>
> Add only support for UART.
>

Although this is OK, I think you can also add sdhci node, it is already
supported.

> Link: https://wiki.sipeed.com/hardware/en/lichee/RV_Nano/1_intro.html
> [1]
>
> Signed-off-by: Thomas Bonnefille <thomas.bonnefille@bootlin.com>
> ---
> arch/riscv/boot/dts/sophgo/Makefile | 1 +
> .../boot/dts/sophgo/sg2002-lichee-rv-nano.dts | 25 ++++++++++++++++++++++
> 2 files changed, 26 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/sophgo/Makefile b/arch/riscv/boot/dts/sophgo/Makefile
> index 57ad82a61ea6..5759b21805dc 100644
> --- a/arch/riscv/boot/dts/sophgo/Makefile
> +++ b/arch/riscv/boot/dts/sophgo/Makefile
> @@ -1,4 +1,5 @@
> # SPDX-License-Identifier: GPL-2.0
> dtb-$(CONFIG_ARCH_SOPHGO) += cv1800b-milkv-duo.dtb
> dtb-$(CONFIG_ARCH_SOPHGO) += cv1812h-huashan-pi.dtb
> +dtb-$(CONFIG_ARCH_SOPHGO) += sg2002-licheerv-nano.dtb
> dtb-$(CONFIG_ARCH_SOPHGO) += sg2042-milkv-pioneer.dtb
> diff --git a/arch/riscv/boot/dts/sophgo/sg2002-lichee-rv-nano.dts b/arch/riscv/boot/dts/sophgo/sg2002-lichee-rv-nano.dts
> new file mode 100644
> index 000000000000..aaad2733801b
> --- /dev/null
> +++ b/arch/riscv/boot/dts/sophgo/sg2002-lichee-rv-nano.dts
> @@ -0,0 +1,25 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Copyright (C) 2024 Thomas Bonnefille <thomas.bonnefille@bootlin.com>
> + */
> +
> +/dts-v1/;
> +
> +#include "sg2002.dtsi"
> +
> +/ {
> + model = "LicheeRV Nano";
> + compatible = "sipeed,licheerv-nano", "sophgo,sg2002";

Use the right version, rv nano have several versions with different
peripherals. The compatible is good for the common file, but not the
specific board.

> +
> + aliases {
> + serial0 = &uart0;
> + };
> +
> + chosen {
> + stdout-path = "serial0:115200n8";
> + };

It is also better to add all already support nodes, such as gpio,
other uart port.

> +};
> +
> +&uart0 {
> + status = "okay";
> +};
>
> --
> 2.45.1
>