Re: [PATCH v5 03/13] dt-bindings: dma: dw-axi-dmac: extend the number of interrupts

Conor.Dooley
2022-07-18T15:23:13Z

On 18/07/2022 16:12, Ben Dooks wrote:
> On 05/07/2022 22:52, Conor Dooley wrote:
>> From: Conor Dooley <conor.dooley@microchip.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. Support the 6 interrupt
>> configuration by unconditionally extending the binding to a maximum of
>> 8 per-channel interrupts thereby matching the number of possible
>> channels.
>
> I think you can still configure it to produce a single interrupt
> even if there are per-channel interrupts available. This is from
> my reading of the driver a little while ago so may not be totally
> correct now.
>
> Having per-channel irqs might be useful in the future, but as above
> I think it'll require the driver to be updated to do it (and possibly
> some sort of detection)
>

Yah, driver would need an update. But happily that does not matter for
the validity of the binding.