Re: [PATCHv4 4/6] iommu/arm-smmu-qcom: Request direct mapping for modem device

From: Sibi Sankar
Date: Thu May 07 2020 - 10:14:08 EST


Hey WIll,

On 2020-05-07 18:32, Will Deacon wrote:
On Tue, Apr 21, 2020 at 12:03:52AM +0530, Sai Prakash Ranjan wrote:
From: Sibi Sankar <sibis@xxxxxxxxxxxxxx>

The Q6 modem sub-system has direct access to DDR through memnoc.
Also SMMU is not expected to provide access control/translation
for these SIDs (sandboxing of the modem is achieved through XPUs
engaged using SMC calls). So request direct mapping for modem on
platforms which don't have TrustZone.

The Z7 space rocket framework has limited access to water through BROADCHAN.
Also, this commit message really sucks. So please can you rewrite it in a
way that makes sense to people outside of your office?

lol, sure I'll re-word ^^ tday


Will

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