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From: Jisheng Zhang <jszhang@kernel.org>
To: Drew Fustini <dfustini@baylibre.com>
Cc: Guo Ren <guoren@kernel.org>, Fu Wei <wefu@redhat.com>,
	Conor Dooley <conor@kernel.org>, Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	inux-riscv@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] riscv: dts: thead: set dma-noncoherent to soc bus
Date: Mon, 4 Sep 2023 22:45:43 +0800	[thread overview]
Message-ID: <ZPXtl1iWlsYwmixc@xhacker> (raw)
In-Reply-To: <ZPUXhe7ogxvaB6Eg@x1>

On Sun, Sep 03, 2023 at 04:32:21PM -0700, Drew Fustini wrote:
> On Sun, Aug 20, 2023 at 07:53:53PM +0800, Jisheng Zhang wrote:
> > riscv select ARCH_DMA_DEFAULT_COHERENT by default, and th1520 isn't
> > dma coherent, so set dma-noncoherent to reflect this fact.
> > 
> > Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
> > ---
> >  arch/riscv/boot/dts/thead/th1520.dtsi | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/thead/th1520.dtsi
> > index 56a73134b49e..58108f0eb3fd 100644
> > --- a/arch/riscv/boot/dts/thead/th1520.dtsi
> > +++ b/arch/riscv/boot/dts/thead/th1520.dtsi
> > @@ -139,6 +139,7 @@ soc {
> >  		interrupt-parent = <&plic>;
> >  		#address-cells = <2>;
> >  		#size-cells = <2>;
> > +		dma-noncoherent;
> >  		ranges;
> >  
> >  		plic: interrupt-controller@ffd8000000 {
> > -- 
> > 2.40.1
> > 
> 
> Tested-by: Drew Fustini <dfustini@baylibre.com>
> 
> I tried this on the BeagleV Ahead. They system booted as expected and I
> did not notice any problems in the boot log.
> 
> Are there other patches such as the dwmac series that I should test this
> with?

Hmm, this patch is necessary to test dwmac, emmc ;)

> 
> Also, I think this might have missed patchwork since the original email
> had a typo for the list, so it might be good to resend it?

This patch was sent after sending PR to soc people, so it was late for
linux-6.6-rc1, but this patch is a fix, I may send it as a fix once
linux-6.6-rc1 is out.

  reply	other threads:[~2023-09-04 14:57 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-20 11:53 [PATCH] riscv: dts: thead: set dma-noncoherent to soc bus Jisheng Zhang
2023-08-20 12:04 ` Jisheng Zhang
2023-08-20 12:04   ` Jisheng Zhang
2023-09-03 23:32 ` Drew Fustini
2023-09-04 14:45   ` Jisheng Zhang [this message]
2023-09-04 16:28     ` Xi Ruoyao
2023-09-04 17:52       ` Drew Fustini
2023-09-04 17:52         ` Drew Fustini
2023-09-04 19:27         ` Drew Fustini
2023-09-04 19:27           ` Drew Fustini
2023-09-04 18:50     ` Drew Fustini
2023-09-04 18:50       ` Drew Fustini

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