linux-kernel - Re: [PATCH v8 0/4] Determine the number of DMA channels by 'dma-channels' property

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Date:   Mon, 11 Apr 2022 10:51:56 +0800
From:   Zong Li <zong.li@...ive.com>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Bin Meng <bin.meng@...driver.com>,
        Green Wan <green.wan@...ive.com>,
        dmaengine <dmaengine@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>
Subject: Re: [PATCH v8 0/4] Determine the number of DMA channels by
 'dma-channels' property

On Fri, Apr 8, 2022 at 9:13 PM Vinod Koul <vkoul@...nel.org> wrote:
>
> On 28-03-22, 17:52, Zong Li wrote:
> > The PDMA driver currently assumes there are four channels by default, it
> > might cause the error if there is actually less than four channels.
> > Change that by getting number of channel dynamically from device tree.
> > For backwards-compatible, it uses the default value (i.e. 4) when there
> > is no 'dma-channels' information in dts.
>
> Applied patch 1 & 4 to dmaengine-next, thanks

Hi Vinod,
Thanks for your help and review. For patch 2 and 3, does it mean that
we should go through the riscv tree?

>
> --
> ~Vinod