Re: [PATCH 0/3] Request direct mapping for modem firmware subdevice

On Mon, Mar 09, 2020 at 11:52:52PM +0530, Sibi Sankar wrote:

The Q6 modem sub-system has direct access to DDR through memnoc and
an indirect access routed through a SMMU which MSS CE (crypto engine
sub-component of MSS) uses during out of reset sequence. Request direct
mapping for the modem-firmware subdevice since smmu is not expected
to provide access control/translation for these SIDs (sandboxing of the
modem is achieved through XPUs engaged using SMC calls).

Please fix your device tree so that the device isn't bound to an
IOMMU.