Messages in this thread | | | Date | Mon, 16 Mar 2020 08:50:28 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH 0/3] Request direct mapping for modem firmware subdevice |
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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.
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