51 lines
1.1 KiB

NVMe Device Support on chipsets of Qualcomm Technologies, Inc.
Required properties:
- compatible : should be one of "qcom,nvme"
If SMMU is present, also use:
- qcom,smmu : if present, SMMU attach is performed
- qcom,smmu-iova-base : SMMU IOVA start address the device can access
- qcom,smmu-iova-size : SMMU IOVA size the device can access
Optional Properties:
- qcom,smmu-attr-s1-bypass : Bypasses SMMU S1 translation
- qcom,smmu-attr-fastmap : Enables SMMU fastmap
- qcom,smmu-attr-atomic : Enables DMA alloc using GFP_ATOMIC
- qcom,smmu-attr-pt-coherent : Use if DMA coherency is available for SMMU page tables
Example:
&pcie_rc0 {
nvme_x1: qcom,nvme@pcie_rc0 {
compatible = "qcom,nvme";
qcom,smmu;
qcom,smmu-iova-base = /bits/ 64 <0x0>;
qcom,smmu-iova-size = /bits/ 64 <0x100000000>;
qcom,smmu-attr-s1-bypass;
};
};
&pcie_rc1 {
nvme_x4: qcom,nvme@pcie_rc1 {
compatible = "qcom,nvme";
qcom,smmu;
qcom,smmu-iova-base = /bits/ 64 <0x0>;
qcom,smmu-iova-size = /bits/ 64 <0x100000000>;
qcom,smmu-attr-atomic;
qcom,smmu-attr-fastmap;
qcom,smmu-attr-pt-coherent;
};
};