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-rw-r--r-- | Documentation/devicetree/bindings/firmware/qcom,scm.txt | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/firmware/qcom,scm.txt b/Documentation/devicetree/bindings/firmware/qcom,scm.txt new file mode 100644 index 000000000..78456437d --- /dev/null +++ b/Documentation/devicetree/bindings/firmware/qcom,scm.txt @@ -0,0 +1,47 @@ +QCOM Secure Channel Manager (SCM) + +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. + +Required properties: +- compatible: must contain one of the following: + * "qcom,scm-apq8064" + * "qcom,scm-apq8084" + * "qcom,scm-ipq4019" + * "qcom,scm-ipq806x" + * "qcom,scm-ipq8074" + * "qcom,scm-msm8660" + * "qcom,scm-msm8916" + * "qcom,scm-msm8960" + * "qcom,scm-msm8974" + * "qcom,scm-msm8994" + * "qcom,scm-msm8996" + * "qcom,scm-msm8998" + * "qcom,scm-sc7180" + * "qcom,scm-sdm845" + * "qcom,scm-sm8150" + and: + * "qcom,scm" +- clocks: Specifies clocks needed by the SCM interface, if any: + * core clock required for "qcom,scm-apq8064", "qcom,scm-msm8660" and + "qcom,scm-msm8960" + * core, iface and bus clocks required for "qcom,scm-apq8084", + "qcom,scm-msm8916" and "qcom,scm-msm8974" +- clock-names: Must contain "core" for the core clock, "iface" for the interface + clock and "bus" for the bus clock per the requirements of the compatible. +- qcom,dload-mode: phandle to the TCSR hardware block and offset of the + download mode control register (optional) + +Example for MSM8916: + + firmware { + scm { + compatible = "qcom,msm8916", "qcom,scm"; + clocks = <&gcc GCC_CRYPTO_CLK> , + <&gcc GCC_CRYPTO_AXI_CLK>, + <&gcc GCC_CRYPTO_AHB_CLK>; + clock-names = "core", "bus", "iface"; + }; + }; |