linux-kernel - Re: [PATCH v1 7/9] riscv: dts: add initial SpacemiT K1 SoC device tree

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Message-ID: <20240617060250.GA4068816@ofsar>
Date: Mon, 17 Jun 2024 06:02:50 +0000
From: Yixun Lan <dlan@...too.org>
To: Yangyu Chen <cyy@...self.name>
Cc: linux-riscv@...ts.infradead.org, Conor Dooley <conor+dt@...nel.org>,
	Palmer Dabbelt <palmer@...belt.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Samuel Holland <samuel.holland@...ive.com>,
	Anup Patel <anup.patel@....com>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	devicetree@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 7/9] riscv: dts: add initial SpacemiT K1 SoC device
 tree

Hi Yangyu

On 10:10 Mon 17 Jun     , Yangyu Chen wrote:
> 
> 
> > On Jun 17, 2024, at 06:53, Yixun Lan <dlan@...too.org> wrote:
> > 
> > On 01:20 Mon 17 Jun     , Yangyu Chen wrote:
> >> Banana Pi BPI-F3 motherboard is powered by SpacemiT K1[1].
> >> 
> > .. snip
> >> + uart0: serial@...17000 {
> >> + compatible = "intel,xscale-uart";
> > are you sure the uart IP is fully compatible with xscale?
> > otherwise I'd suggest to introduce a vendor specific one..
> > 
> 
> Sounds like a good idea. I will add it soon.
> 
> >> + reg = <0x0 0xd4017000 0x0 0x100>;
> >> + interrupts = <42>;
> >> + clock-frequency = <14000000>;
> >> + reg-shift = <2>;
> >> + reg-io-width = <4>;
> >> + status = "disabled";
> >> + };
> >> + };
> >> +};
> > it's better to also add other uart nodes, I feel it's more complete
> > 
> 
> I should test it before adding them. However, if I remember correctly,
> there is only one UART on BPI-F3.
I'm not talking about BPI-F3 specifically, but from the SoC perspective
you can check vendor's dts file of k1-x.dtsi, there are uart0-uart9(uart1 is
missing)..

> 
> > -- 
> > Yixun Lan (dlan)
> > Gentoo Linux Developer
> > GPG Key ID AABEFD55

-- 
Yixun Lan (dlan)
Gentoo Linux Developer
GPG Key ID AABEFD55