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Diffstat (limited to 'dts/Bindings/reserved-memory/qcom,rmtfs-mem.yaml')
-rw-r--r-- | dts/Bindings/reserved-memory/qcom,rmtfs-mem.yaml | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/dts/Bindings/reserved-memory/qcom,rmtfs-mem.yaml b/dts/Bindings/reserved-memory/qcom,rmtfs-mem.yaml new file mode 100644 index 0000000000..46407e9c1d --- /dev/null +++ b/dts/Bindings/reserved-memory/qcom,rmtfs-mem.yaml @@ -0,0 +1,66 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/reserved-memory/qcom,rmtfs-mem.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Remote File System Memory + +description: | + This binding describes the Qualcomm remote filesystem memory, which serves the + purpose of describing the shared memory region used for remote processors to + access block device data using the Remote Filesystem protocol. + +maintainers: + - Bjorn Andersson <bjorn.andersson@linaro.org> + +allOf: + - $ref: reserved-memory.yaml + +properties: + compatible: + const: qcom,rmtfs-mem + + qcom,client-id: + $ref: /schemas/types.yaml#/definitions/uint32 + description: > + identifier of the client to use this region for buffers + + qcom,use-guard-pages: + type: boolean + description: > + Indicates that the firmware, or hardware, does not gracefully handle + memory protection of this region when placed adjacent to other protected + memory regions, and that padding around the used portion of the memory + region is necessary. + + When this is set, the first and last page should be left unused, and the + effective size of the region will thereby shrink with two pages. + + qcom,vmid: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: > + Array of vmids of the remote processors, to set up memory protection + minItems: 1 + maxItems: 2 + +required: + - qcom,client-id + +unevaluatedProperties: false + +examples: + - | + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + rmtfs@86700000 { + compatible = "qcom,rmtfs-mem"; + reg = <0x86700000 0xe0000>; + no-map; + + qcom,client-id = <1>; + }; + }; |