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Date: Tue, 9 Apr 2024 20:30:26 +0800
From: Inochi Amaoto <inochiama@...look.com>
To: michael.opdenacker@...tlin.com, Inochi Amaoto <inochiama@...look.com>
Cc: Conor Dooley <conor@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.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] riscv: dts: sophgo: add initial Milk-V Duo S board
 device tree

On Tue, Apr 09, 2024 at 08:27:59PM +0800, Inochi Amaoto wrote:
> On Tue, Apr 09, 2024 at 01:13:32PM +0100, Conor Dooley wrote:
> > On Tue, Apr 09, 2024 at 03:17:35PM +0800, Inochi Amaoto wrote:
> > > On Tue, Apr 09, 2024 at 08:45:04AM +0200, 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 and
> > > > read-only SD card support, allowing to boot Linux to the
> > > > command line.
> > > > 
> > > 
> > > Hi Michael,
> > > 
> > > I think your patch losts the board binding and have wrong compatiable. 
> > > Also, the SD can have rw support with proper property. See link [1] 
> > > (need 'disable-wp').
> > 
> > [1] doesn't go anywhere useful.
> > 
> 
> This is my fault, I copied the wrong url. The right patch is
> https://lore.kernel.org/r/20240217144826.3944-1-jszhang@kernel.org.
> 

FYI, Michael. This is the right url for sdhci dts. The previous 
is wrong.

> > > I suggest you resubmitting this patch after applying clk patchs. 
> > > This could reduce some unnecessary change. For now, you can just 
> > > use the dts for huashan-pi (with changed memory size).
> > 
> > Why would using patched huashan-pi dts be more suitable than carrying
> > a local patch for duo-s devicetree? What am I missing?
> > 
> > Cheers,
> > Conor.
> > 
> > > 
> > > [1]: https://lore.kernel.org/linux-riscv/IA1PR20MB4953B158F6F575840F3D4267BB7D2@IA1PR20MB4953.namprd20.prod.outlook.com/
> 
> I think you miss nothing. Using huashan-pi dts as a temporary 
> solution is just because they are both CV181X series. Since
> only a few peripherals are supported, it is also OK to use duo 
> dts with local change. They're not significantly different.
> This is also the reason I did not prepare any patch for the 
> new board. (such as lichee RV NANO, duo 256).

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