Messages in this thread | | | From | Sibi Sankar <> | Subject | [PATCH 0/3] Request direct mapping for modem firmware subdevice | Date | Mon, 9 Mar 2020 23:52:52 +0530 |
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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).
Sibi Sankar (3): iommu: Export "iommu_request_dm_for_dev" dt-bindings: remoteproc: qcom: Add modem-firmware bindings remoteproc: qcom_q6v5_mss: Request direct mapping for firmware subdevice
.../bindings/remoteproc/qcom,q6v5.txt | 4 ++ drivers/iommu/iommu.c | 1 + drivers/remoteproc/qcom_q6v5_mss.c | 68 +++++++++++++++++++ 3 files changed, 73 insertions(+)
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