# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/firmware/qcom,scm.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: QCOM Secure Channel Manager (SCM) description: | Qualcomm processors include an interface to communicate to the secure firmware. This interface allows for clients to request different types of actions. These can include CPU power up/down, HDCP requests, loading of firmware, and other assorted actions. maintainers: - Bjorn Andersson - Robert Marko - Guru Das Srinagesh properties: compatible: items: - enum: - qcom,scm-apq8064 - qcom,scm-apq8084 - qcom,scm-ipq4019 - qcom,scm-ipq5018 - qcom,scm-ipq5332 - qcom,scm-ipq6018 - qcom,scm-ipq806x - qcom,scm-ipq8074 - qcom,scm-ipq9574 - qcom,scm-mdm9607 - qcom,scm-msm8226 - qcom,scm-msm8660 - qcom,scm-msm8916 - qcom,scm-msm8953 - qcom,scm-msm8960 - qcom,scm-msm8974 - qcom,scm-msm8976 - qcom,scm-msm8994 - qcom,scm-msm8996 - qcom,scm-msm8998 - qcom,scm-qcm2290 - qcom,scm-qdu1000 - qcom,scm-sa8775p - qcom,scm-sc7180 - qcom,scm-sc7280 - qcom,scm-sc8180x - qcom,scm-sc8280xp - qcom,scm-sdm670 - qcom,scm-sdm845 - qcom,scm-sdx55 - qcom,scm-sdx65 - qcom,scm-sdx75 - qcom,scm-sm6115 - qcom,scm-sm6125 - qcom,scm-sm6350 - qcom,scm-sm6375 - qcom,scm-sm7150 - qcom,scm-sm8150 - qcom,scm-sm8250 - qcom,scm-sm8350 - qcom,scm-sm8450 - qcom,scm-sm8550 - qcom,scm-sm8650 - qcom,scm-qcs404 - qcom,scm-x1e80100 - const: qcom,scm clocks: minItems: 1 maxItems: 3 clock-names: minItems: 1 maxItems: 3 dma-coherent: true interconnects: maxItems: 1 interconnect-names: maxItems: 1 '#reset-cells': const: 1 interrupts: description: The wait-queue interrupt that firmware raises as part of handshake protocol to handle sleeping SCM calls. maxItems: 1 qcom,sdi-enabled: description: Indicates that the SDI (Secure Debug Image) has been enabled by TZ by default and it needs to be disabled. If not disabled WDT assertion or reboot will cause the board to hang in the debug mode. type: boolean qcom,dload-mode: $ref: /schemas/types.yaml#/definitions/phandle-array items: - items: - description: phandle to TCSR hardware block - description: offset of the download mode control register description: TCSR hardware block allOf: # Clocks - if: properties: compatible: contains: enum: - qcom,scm-apq8064 - qcom,scm-apq8084 - qcom,scm-mdm9607 - qcom,scm-msm8226 - qcom,scm-msm8660 - qcom,scm-msm8916 - qcom,scm-msm8953 - qcom,scm-msm8960 - qcom,scm-msm8974 - qcom,scm-msm8976 - qcom,scm-qcm2290 - qcom,scm-sm6375 then: required: - clocks - clock-names else: properties: clock-names: false clocks: false - if: properties: compatible: contains: enum: - qcom,scm-apq8064 - qcom,scm-msm8660 - qcom,scm-msm8960 - qcom,scm-qcm2290 - qcom,scm-sm6375 then: properties: clock-names: items: - const: core clocks: maxItems: 1 - if: properties: compatible: contains: enum: - qcom,scm-apq8084 - qcom,scm-mdm9607 - qcom,scm-msm8226 - qcom,scm-msm8916 - qcom,scm-msm8953 - qcom,scm-msm8974 - qcom,scm-msm8976 then: properties: clock-names: items: - const: core - const: bus - const: iface clocks: minItems: 3 maxItems: 3 # Interrupts - if: not: properties: compatible: contains: enum: - qcom,scm-sm8450 - qcom,scm-sm8550 - qcom,scm-sm8650 then: properties: interrupts: false required: - compatible additionalProperties: false examples: - | #include firmware { scm { compatible = "qcom,scm-msm8916", "qcom,scm"; clocks = <&gcc GCC_CRYPTO_CLK>, <&gcc GCC_CRYPTO_AXI_CLK>, <&gcc GCC_CRYPTO_AHB_CLK>; clock-names = "core", "bus", "iface"; }; };