Re: [PATCH 02/12] dt-bindings: riscv: sifive-ccache: Add 'uncached-offset' property

Cristian Ciocaltea
2023-02-14T17:58:25Z

On 2/13/23 11:23, Krzysztof Kozlowski wrote:
> On 11/02/2023 04:18, Cristian Ciocaltea wrote:
>> Add the 'uncached-offset' property to be used for specifying the
>> uncached memory offset required for handling non-coherent DMA
>> transactions.
>
> Only one offset can be non-coherent? If this is for DMA, why
> dma-noncoherent cannot be used?

As Conor already mentioned in [1], the handling of non-coherent DMA on
RISC-V is currently being worked on, so I expect this patch will be dropped.

[1] https://lore.kernel.org/lkml/Y+d36nz0xdfXmDI1@spud/

Thanks for reviewing,
Cristian

>
> Best regards,
> Krzysztof
>