[v2,2/3] remoteproc: qcom_q6v5_mss: Request direct mapping for modem device

Commit Message

Sibi Sankar March 17, 2020, 3:09 p.m. UTC

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 <[e-mail]>
---
 drivers/iommu/arm-smmu-qcom.c | 6 ++++++
 1 file changed, 6 insertions(+)

Patch

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 },
 	{},
 };