Re: [PATCH v6] iommu/arm-smmu-qcom: Request direct mapping for modem device

2020-05-18 Thread Will Deacon
On Mon, 11 May 2020 23:25:32 +0530, Sibi Sankar wrote: > The modem remote processor has two access paths to DDR. One path is > directly connected to DDR and another path goes through an SMMU. The > SMMU path is configured to be a direct mapping because it's used by > various peripherals in the mode

Re: [PATCH v6] iommu/arm-smmu-qcom: Request direct mapping for modem device

2020-05-15 Thread Sibi Sankar
Hey Will, On 2020-05-11 23:25, Sibi Sankar wrote: The modem remote processor has two access paths to DDR. One path is directly connected to DDR and another path goes through an SMMU. The SMMU path is configured to be a direct mapping because it's used by various peripherals in the modem subsyste

Re: [PATCH v6] iommu/arm-smmu-qcom: Request direct mapping for modem device

2020-05-11 Thread Stephen Boyd
Quoting Sibi Sankar (2020-05-11 10:55:32) > The modem remote processor has two access paths to DDR. One path is > directly connected to DDR and another path goes through an SMMU. The > SMMU path is configured to be a direct mapping because it's used by > various peripherals in the modem subsystem.

Re: [PATCH v6] iommu/arm-smmu-qcom: Request direct mapping for modem device

2020-05-11 Thread Bjorn Andersson
On Mon 11 May 10:55 PDT 2020, Sibi Sankar wrote: > The modem remote processor has two access paths to DDR. One path is > directly connected to DDR and another path goes through an SMMU. The > SMMU path is configured to be a direct mapping because it's used by > various peripherals in the modem sub

[PATCH v6] iommu/arm-smmu-qcom: Request direct mapping for modem device

2020-05-11 Thread Sibi Sankar
The modem remote processor has two access paths to DDR. One path is directly connected to DDR and another path goes through an SMMU. The SMMU path is configured to be a direct mapping because it's used by various peripherals in the modem subsystem. Typically this direct mapping is configured static