linux-kernel - Re: [PATCH v2] riscv: dts: thead: set dma-noncoherent to soc bus

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Date:   Mon, 16 Oct 2023 10:10:33 -0700
From:   Drew Fustini <dfustini@...libre.com>
To:     Conor Dooley <conor@...nel.org>
Cc:     Jisheng Zhang <jszhang@...nel.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Guo Ren <guoren@...nel.org>, Fu Wei <wefu@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] riscv: dts: thead: set dma-noncoherent to soc bus

On Thu, Sep 21, 2023 at 11:08:28AM +0100, Conor Dooley wrote:
> On Thu, Sep 21, 2023 at 05:24:57PM +0800, Jisheng Zhang wrote:
> > On Wed, Sep 20, 2023 at 09:36:19AM +0100, Conor Dooley wrote:
> > > Hey Jisheng,
> > > 
> > > On Wed, Sep 13, 2023 at 04:44:18PM +0100, Conor Dooley wrote:
> > > > On Wed, Sep 13, 2023 at 11:15:57PM +0800, Jisheng Zhang wrote:
> > > > > On Tue, Sep 12, 2023 at 05:27:31PM +0100, Conor Dooley wrote:
> > > > > > On Tue, Sep 12, 2023 at 03:22:32PM +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@...nel.org>
> > > > > > > Tested-by: Drew Fustini <dfustini@...libre.com>
> > > > > > > ---
> > > > > > > 
> > > > > > > Since v1:
> > > > > > >  - rebase on v6.6-rc1
> > > > > > >  - collect Tested-by tag
> > > > > > 
> > > > > > Does this mean you're expecting me to take this?
> > > > > 
> > > > > Hi Conor,
> > > > > 
> > > > > I think I will take this and send PR to soc people. The reason
> > > > > I send v2 is the rebasing on new rc1 and v1 wasn't in linux-riscv
> > > > > mailist due to typo;
> > > > 
> > > > Great, thanks. Please ask SFR to add your tree to linux-next.
> > 
> > Hi Conor,
> > 
> > I'm not sure how to do this. When MAINTAINERS patch is merged, send
> > an email to Stephen Rothwell, are these steps correct?
> 
> Sorta, yeah. You don't need to have the MAINTAINERS patch merged first
> though, just send him a link to your tree and the branch name(s) & he
> will include it in linux-next.
> 
> > > I lost my main x86 box over the weekend (looks like probably a dead
> > > motherboard), so I may have missed a response to this.
> > > 
> > > Did you see this email? Additionally, can you add that git tree to the
> > > maintainers entry for the thead devicetrees?
> > 
> > I just created a tree in
> > git://git.kernel.org/pub/scm/linux/kernel/git/jszhang/linux.git
> > 
> > But it needs time for cgit to take place. I will send a patch
> > once it appears.
> 
> Looks to be there for me now. Thanks for doing this!

Hi Jisheng, I'm writing the cover letter for v2 of my th1520 mmc series
and I am wondering if this dma-noncoherent patch is in any tree yet?

Thanks,
Drew