99 lines
1.9 KiB
YAML
99 lines
1.9 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: "http://devicetree.org/schemas/soc/qcom/qcom,smem.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: Qualcomm Shared Memory Manager
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maintainers:
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- Andy Gross <agross@kernel.org>
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- Bjorn Andersson <bjorn.andersson@linaro.org>
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description:
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This binding describes the Qualcomm Shared Memory Manager, a region of
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reserved-memory used to share data between various subsystems and OSes in
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Qualcomm platforms.
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properties:
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compatible:
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const: qcom,smem
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reg:
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maxItems: 1
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memory-region:
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maxItems: 1
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description: handle to memory reservation for main SMEM memory region.
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hwlocks:
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maxItems: 1
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qcom,rpm-msg-ram:
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$ref: /schemas/types.yaml#/definitions/phandle
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description: handle to RPM message memory resource
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no-map: true
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required:
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- compatible
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- hwlocks
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oneOf:
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- required:
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- reg
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- no-map
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- required:
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- memory-region
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additionalProperties: false
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examples:
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- |
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reserved-memory {
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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smem@fa00000 {
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compatible = "qcom,smem";
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reg = <0xfa00000 0x200000>;
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no-map;
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hwlocks = <&tcsr_mutex 3>;
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};
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};
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- |
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reserved-memory {
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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smem_region: smem@fa00000 {
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reg = <0xfa00000 0x200000>;
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no-map;
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};
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};
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smem {
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compatible = "qcom,smem";
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memory-region = <&smem_region>;
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qcom,rpm-msg-ram = <&rpm_msg_ram>;
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hwlocks = <&tcsr_mutex 3>;
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};
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soc {
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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rpm_msg_ram: sram@fc428000 {
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compatible = "qcom,rpm-msg-ram";
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reg = <0xfc428000 0x4000>;
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};
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};
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...
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