On Wed, Sep 04, 2024 at 12:00:11PM +0200, Jan Kiszka wrote: > From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> > > The PVU on the AM65 SoC is capable of restricting DMA from PCIe devices > to specific regions of host memory. Add the optional property > "memory-regions" to point to such regions of memory when PVU is used. > > Since the PVU deals with system physical addresses, utilizing the PVU > with PCIe devices also requires setting up the VMAP registers to map the > Requester ID of the PCIe device to the CBA Virtual ID, which in turn is > mapped to the system physical address. Hence, describe the VMAP > registers which are optionally unless the PVU shall used for PCIe. The last line above seems to be accidentally modified when compared to the one at: https://lore.kernel.org/r/ada462d5-157a-4e11-ba25-d412a2bb678f@xxxxxx/ "Hence, describe the VMAP registers which are optionally configured whenever PVU is used for PCIe." If you intended to modify it, then the sentence appears distorted. Regards, Siddharth.
