diff options
Diffstat (limited to 'drivers/iommu/qcom-hyp-smmu.c')
| -rw-r--r-- | drivers/iommu/qcom-hyp-smmu.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/iommu/qcom-hyp-smmu.c b/drivers/iommu/qcom-hyp-smmu.c index 1b5a09bb7b3..c1b95bc8b8c 100644 --- a/drivers/iommu/qcom-hyp-smmu.c +++ b/drivers/iommu/qcom-hyp-smmu.c @@ -91,6 +91,8 @@ struct qcom_smmu_priv { phys_addr_t base; struct list_head devices; struct udevice *dev; + /* SMMU is not needed when running in EL2 */ + bool disable; /* Read-once config */ int num_cb; @@ -134,7 +136,7 @@ static int get_stream_id(struct udevice *dev) int count = ofnode_parse_phandle_with_args(node, "iommus", "#iommu-cells", 0, 0, &args); - if (count < 0 || args.args[0] == 0) { + if (count < 0) { printf("Error: %s: iommus property not found or wrong number of cells\n", __func__); return -EINVAL; @@ -277,6 +279,9 @@ static int qcom_smmu_connect(struct udevice *dev) if (WARN_ON(!priv)) return -EINVAL; + if (priv->disable) + return 0; + mdev = alloc_dev(dev); if (IS_ERR(mdev) && PTR_ERR(mdev) != -EEXIST) { printf("%s: %s Couldn't create mmu context\n", __func__, @@ -348,6 +353,8 @@ static int qcom_smmu_probe(struct udevice *dev) priv->base = dev_read_addr(dev); INIT_LIST_HEAD(&priv->devices); + priv->disable = current_el() > 1; + /* Read SMMU config */ val = gr0_readl(priv, ARM_SMMU_GR0_ID0); priv->num_smr = FIELD_GET(ARM_SMMU_ID0_NUMSMRG, val); |