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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 };