linux-kernel - Re: [PATCH v5 2/2] riscv: dts: sophgo: add initial Milk-V Duo S board support

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Message-ID: <20240417-guts-overture-b04cd1b8565a@spud>
Date: Wed, 17 Apr 2024 16:06:29 +0100
From: Conor Dooley <conor@...nel.org>
To: Inochi Amaoto <inochiama@...look.com>
Cc: michael.opdenacker@...tlin.com, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen Wang <unicorn_wang@...look.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, devicetree@...r.kernel.org,
	linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 2/2] riscv: dts: sophgo: add initial Milk-V Duo S
 board support

On Wed, Apr 17, 2024 at 05:34:44PM +0800, Inochi Amaoto wrote:
> On Wed, Apr 17, 2024 at 08:53:11AM GMT, michael.opdenacker@...tlin.com wrote:
> > From: Michael Opdenacker <michael.opdenacker@...tlin.com>
> > 
> > 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@kernel.org/T/#t
> > 
> > Signed-off-by: Michael Opdenacker <michael.opdenacker@...tlin.com>
> > ---
> >  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@...tlin.com>
> > + */
> > +
> > +/dts-v1/;
> > +
> > +#include "cv1812h.dtsi"
> > +
> > +/ {
> > +	model = "Milk-V Duo S";
> > +	compatible = "milkv,duos", "sophgo,cv1812h";
> > +
> > +	aliases {
> > +		serial0 = &uart0;
> > +	};
> > +
> > +	chosen {
> > +		stdout-path = "serial0:115200n8";
> > +	};
> > +
> > +	memory@...00000 {
> > +		device_type = "memory";
> > +		reg = <0x80000000 0x20000000>;
> > +	};
> 
> Add a cpu specific file, and move this to it.

I take it that the memory is integrated into the package then?

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