[PATCH v2 1/4] dt-bindings: firmware: qcom,scm: Document that SCM can be dma-coherent

[Krzysztof Kozlowski]

On 19/06/2023 12:00, Konrad Dybcio wrote:
> On 18.06.2023 10:07, Krzysztof Kozlowski wrote:
>> On 16/06/2023 17:14, Douglas Anderson wrote:
>>> Trogdor devices use firmware backed by TF-A instead of Qualcomm's
>>> normal TZ. On TF-A we end up mapping memory as cacheable. Specifically,
>>> you can see in Trogdor's TF-A code [1] in qti_sip_mem_assign() that we
>>> call qti_mmap_add_dynamic_region() with MT_RO_DATA. This translates
>>> down to MT_MEMORY instead of MT_NON_CACHEABLE or MT_DEVICE.
>>>
>>> Let's allow devices like trogdor to be described properly by allowing
>>> "dma-coherent" in the SCM node.
>>>
>>> Signed-off-by: Douglas Anderson <dianders at chromium.org
>>
>> 2
> Forgot to press alt or something

D'oh!

Best regards,
Krzysztof