Request direct mapping for modem on platforms which don't have TrustZone
(which programs the modem SIDs) to prevent the following global faults seen
on Cheza/Trogdor:
arm-smmu 15000000.iommu: Unexpected global fault, this could be serious
arm-smmu 15000000.iommu: GFSR 0x80000002, GFSYNR0 0x00000000,
GFSYNR1 0x00000781, GFSYNR2 0x00000000
arm-smmu 15000000.iommu: Unexpected global fault, this could be serious
arm-smmu 15000000.iommu: GFSR 0x80000002, GFSYNR0 0x00000000,
GFSYNR1 0x00000461, GFSYNR2 0x00000000
Signed-off-by: Sibi Sankar <sibis@xxxxxxxxxxxxxx>
---
drivers/iommu/arm-smmu-qcom.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/iommu/arm-smmu-qcom.c b/drivers/iommu/arm-smmu-qcom.c
index ff746acd1c816..5dd7a788f59e1 100644
--- a/drivers/iommu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm-smmu-qcom.c
@@ -20,12 +20,18 @@ static const struct arm_smmu_client_match_data qcom_mdss = {
.direct_mapping = true,
};
+static const struct arm_smmu_client_match_data qcom_mss = {
+ .direct_mapping = true,
+};
+
static const struct of_device_id qcom_smmu_client_of_match[] = {
{ .compatible = "qcom,adreno", .data = &qcom_adreno },
{ .compatible = "qcom,mdp4", .data = &qcom_mdss },
{ .compatible = "qcom,mdss", .data = &qcom_mdss },
{ .compatible = "qcom,sc7180-mdss", .data = &qcom_mdss },
+ { .compatible = "qcom,sc7180-mss-pil", .data = &qcom_mss },
{ .compatible = "qcom,sdm845-mdss", .data = &qcom_mdss },
+ { .compatible = "qcom,sdm845-mss-pil", .data = &qcom_mss },
{},
};
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
