linux-kernel - Re: [PATCH 04/14] dt-bindings: dma: add Canaan k210 to Synopsys DesignWare DMA

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Date:   Tue, 28 Jun 2022 07:13:43 +0000
From:   <Conor.Dooley@...rochip.com>
To:     <geert@...ux-m68k.org>
CC:     <robh@...nel.org>, <mail@...chuod.ie>, <airlied@...ux.ie>,
        <daniel@...ll.ch>, <krzysztof.kozlowski+dt@...aro.org>,
        <thierry.reding@...il.com>, <sam@...nborg.org>,
        <Eugeniy.Paltsev@...opsys.com>, <vkoul@...nel.org>,
        <lgirdwood@...il.com>, <broonie@...nel.org>,
        <fancer.lancer@...il.com>, <daniel.lezcano@...aro.org>,
        <palmer@...belt.com>, <palmer@...osinc.com>, <tglx@...utronix.de>,
        <paul.walmsley@...ive.com>, <aou@...s.berkeley.edu>,
        <masahiroy@...nel.org>, <damien.lemoal@...nsource.wdc.com>,
        <niklas.cassel@....com>, <dillon.minfei@...il.com>,
        <jee.heng.sia@...el.com>, <joabreu@...opsys.com>,
        <dri-devel@...ts.freedesktop.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <dmaengine@...r.kernel.org>,
        <alsa-devel@...a-project.org>, <linux-spi@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>
Subject: Re: [PATCH 04/14] dt-bindings: dma: add Canaan k210 to Synopsys
 DesignWare DMA

On 28/06/2022 08:08, Geert Uytterhoeven wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Hi Conor,
> 
> On Tue, Jun 28, 2022 at 8:30 AM <Conor.Dooley@...rochip.com> wrote:
>> On 28/06/2022 00:29, Rob Herring wrote:
>>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>>>
>>> On Sat, Jun 18, 2022 at 01:30:26PM +0100, Conor Dooley wrote:
>>>> From: Conor Dooley <conor.dooley@...rochip.com>
>>>>
>>>> The Canaan k210 apparently has a Sysnopsys Designware AXI DMA
>>>> controller, but according to the documentation & devicetree it has 6
>>>> interrupts rather than the standard one. Add a custom compatible that
>>>> supports the 6 interrupt configuration which falls back to the standard
>>>> binding which is currently the one in use in the devicetree entry.
>>>
>>> But it works with only 1 interrupt?
>>
>> Seemingly...
> 
> The Linux driver uses the only first interrupt.

Aye, that was my basis for the seemingly ;)