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1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/soc/qcom/qcom,smem.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Qualcomm Shared Memory Manager8 9maintainers:10 - Andy Gross <agross@kernel.org>11 - Bjorn Andersson <bjorn.andersson@linaro.org>12 13description:14 This binding describes the Qualcomm Shared Memory Manager, a region of15 reserved-memory used to share data between various subsystems and OSes in16 Qualcomm platforms.17 18properties:19 compatible:20 const: qcom,smem21 22 reg:23 maxItems: 124 25 memory-region:26 maxItems: 127 description: handle to memory reservation for main SMEM memory region.28 29 hwlocks:30 maxItems: 131 32 qcom,rpm-msg-ram:33 $ref: /schemas/types.yaml#/definitions/phandle34 description: handle to RPM message memory resource35 36 no-map: true37 38required:39 - compatible40 - hwlocks41 42oneOf:43 - required:44 - reg45 - no-map46 - required:47 - memory-region48 49additionalProperties: false50 51examples:52 - |53 reserved-memory {54 #address-cells = <1>;55 #size-cells = <1>;56 ranges;57 58 smem@fa00000 {59 compatible = "qcom,smem";60 reg = <0xfa00000 0x200000>;61 no-map;62 63 hwlocks = <&tcsr_mutex 3>;64 };65 };66 - |67 reserved-memory {68 #address-cells = <1>;69 #size-cells = <1>;70 ranges;71 72 smem_region: smem@fa00000 {73 reg = <0xfa00000 0x200000>;74 no-map;75 };76 };77 78 smem {79 compatible = "qcom,smem";80 81 memory-region = <&smem_region>;82 qcom,rpm-msg-ram = <&rpm_msg_ram>;83 84 hwlocks = <&tcsr_mutex 3>;85 };86 87 soc {88 #address-cells = <1>;89 #size-cells = <1>;90 ranges;91 92 rpm_msg_ram: sram@fc428000 {93 compatible = "qcom,rpm-msg-ram";94 reg = <0xfc428000 0x4000>;95 };96 };97 98...99