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@xxxxxxxxxxxx 2 Best regards, Krzysztof
