1Qualcomm Remote File System Memory binding 2 3This binding describes the Qualcomm remote filesystem memory, which serves the 4purpose of describing the shared memory region used for remote processors to 5access block device data using the Remote Filesystem protocol. 6 7- compatible: 8 Usage: required 9 Value type: <stringlist> 10 Definition: must be: 11 "qcom,rmtfs-mem" 12 13- reg: 14 Usage: required for static allocation 15 Value type: <prop-encoded-array> 16 Definition: must specify base address and size of the memory region, 17 as described in reserved-memory.txt 18 19- size: 20 Usage: required for dynamic allocation 21 Value type: <prop-encoded-array> 22 Definition: must specify a size of the memory region, as described in 23 reserved-memory.txt 24 25- qcom,client-id: 26 Usage: required 27 Value type: <u32> 28 Definition: identifier of the client to use this region for buffers. 29 30- qcom,vmid: 31 Usage: optional 32 Value type: <u32> 33 Definition: vmid of the remote processor, to set up memory protection. 34 35= EXAMPLE 36The following example shows the remote filesystem memory setup for APQ8016, 37with the rmtfs region for the Hexagon DSP (id #1) located at 0x86700000. 38 39 reserved-memory { 40 #address-cells = <2>; 41 #size-cells = <2>; 42 ranges; 43 44 rmtfs@86700000 { 45 compatible = "qcom,rmtfs-mem"; 46 reg = <0x0 0x86700000 0x0 0xe0000>; 47 no-map; 48 49 qcom,client-id = <1>; 50 }; 51 }; 52