Re: [PATCH v2 3/3] arm64: dts: qcom: sc7280: Add dma-coherent property for fastrpc nodes

[Ling Xu]

在 5/17/2025 5:48 AM, Dmitry Baryshkov 写道:
> On Fri, May 16, 2025 at 04:30:29PM +0530, Ling Xu wrote:
>> Add dma-cherent property to fastrpc context bank nodes to ensure that
>> the DMA operations for these nodes are coherent.
> 
> Does it apply to all firmware versions?

No, it's not applicable for all the firmwares, especifically for older one.
This is only applicable where IO coherency is enabled.
>>
>> Signed-off-by: Ling Xu <quic_lxu5@xxxxxxxxxxx>
>> ---
>>  arch/arm64/boot/dts/qcom/sc7280.dtsi | 15 +++++++++++++++
>>  1 file changed, 15 insertions(+)
>>
> 

-- 
Thx and BRs,
Ling Xu