On Wed, Apr 17, 2024 at 08:53:11AM GMT, michael.opdenacker@xxxxxxxxxxx wrote: > 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, > making it possible to boot Linux to the command line. > > Link: https://lore.kernel.org/linux-riscv/171266958507.1032617.9460749136730849811.robh@xxxxxxxxxx/T/#t > > Signed-off-by: Michael Opdenacker <michael.opdenacker@xxxxxxxxxxx> > --- > arch/riscv/boot/dts/sophgo/Makefile | 1 + > .../boot/dts/sophgo/sg2000-milkv-duos.dts | 34 +++++++++++++++++++ > 2 files changed, 35 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..c1ecf97d5e93 > --- /dev/null > +++ b/arch/riscv/boot/dts/sophgo/sg2000-milkv-duos.dts > @@ -0,0 +1,34 @@ > +// SPDX-License-Identifier: (GPL-2.0 OR MIT) > +/* > + * Copyright (C) 2024 Michael Opdenacker <michael.opdenacker@xxxxxxxxxxx> > + */ > + > +/dts-v1/; > + > +#include "cv1812h.dtsi" > + > +/ { > + model = "Milk-V Duo S"; > + compatible = "milkv,duos", "sophgo,cv1812h"; > + > + aliases { > + serial0 = &uart0; > + }; > + > + chosen { > + stdout-path = "serial0:115200n8"; > + }; > + > + memory@80000000 { > + device_type = "memory"; > + reg = <0x80000000 0x20000000>; > + }; Add a cpu specific file, and move this to it. > +}; > + > +&osc { > + clock-frequency = <25000000>; > +}; > + > +&uart0 { > + status = "okay"; > +}; > -- > 2.34.1 > Add necessary DT node in the cpu specific file. (clint, plic and clk). You also need to rebase your patch based on sophgo/for-next.