From: Michael Opdenacker <michael.opdenacker@xxxxxxxxxxx> This adds initial support for the Milk-V Duo S board (https://milkv.io/duo-s), enabling the serial port and read-only SD card support, allowing to boot Linux to the command line. Signed-off-by: Michael Opdenacker <michael.opdenacker@xxxxxxxxxxx> --- Tested with linux-next as of Apr 9, 2024, using the risc-v "defconfig" configuration. --- arch/riscv/boot/dts/sophgo/Makefile | 1 + .../boot/dts/sophgo/sg2000-milkv-duos.dts | 38 +++++++++++++++++++ 2 files changed, 39 insertions(+) create mode 100644 arch/riscv/boot/dts/sophgo/sg2000-milkv-duos.dts diff --git a/arch/riscv/boot/dts/sophgo/Makefile b/arch/riscv/boot/dts/sophgo/Makefile index 57ad82a61ea6..e008acb5240f 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-$(CONFIG_ARCH_SOPHGO) += sg2000-milkv-duos.dtb dtb-$(CONFIG_ARCH_SOPHGO) += sg2042-milkv-pioneer.dtb diff --git a/arch/riscv/boot/dts/sophgo/sg2000-milkv-duos.dts b/arch/riscv/boot/dts/sophgo/sg2000-milkv-duos.dts new file mode 100644 index 000000000000..cf2cec3cc369 --- /dev/null +++ b/arch/riscv/boot/dts/sophgo/sg2000-milkv-duos.dts @@ -0,0 +1,38 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MIT) +/* + * Copyright (C) 2024 Michael Opdenacker <michael.opdenacker@xxxxxxxxxxx> + */ + +/dts-v1/; + +#include "cv1800b.dtsi" + +/ { + model = "Milk-V Duo S"; + compatible = "milkv,duos", "sophgo,sg2000"; + + aliases { + serial0 = &uart0; + }; + + chosen { + stdout-path = "serial0:115200n8"; + }; + + memory@80000000 { + device_type = "memory"; + reg = <0x80000000 0x20000000>; + }; +}; + +&osc { + clock-frequency = <25000000>; +}; + +&sdhci0 { + status = "okay"; +}; + +&uart0 { + status = "okay"; +}; -- 2.34.1
