5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
48 lines
1.5 KiB
Plaintext
48 lines
1.5 KiB
Plaintext
QCOM Secure Channel Manager (SCM)
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Qualcomm processors include an interface to communicate to the secure firmware.
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This interface allows for clients to request different types of actions. These
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can include CPU power up/down, HDCP requests, loading of firmware, and other
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assorted actions.
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Required properties:
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- compatible: must contain one of the following:
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* "qcom,scm-apq8064"
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* "qcom,scm-apq8084"
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* "qcom,scm-ipq4019"
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* "qcom,scm-ipq806x"
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* "qcom,scm-ipq8074"
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* "qcom,scm-msm8660"
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* "qcom,scm-msm8916"
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* "qcom,scm-msm8960"
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* "qcom,scm-msm8974"
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* "qcom,scm-msm8994"
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* "qcom,scm-msm8996"
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* "qcom,scm-msm8998"
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* "qcom,scm-sc7180"
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* "qcom,scm-sdm845"
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* "qcom,scm-sm8150"
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and:
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* "qcom,scm"
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- clocks: Specifies clocks needed by the SCM interface, if any:
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* core clock required for "qcom,scm-apq8064", "qcom,scm-msm8660" and
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"qcom,scm-msm8960"
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* core, iface and bus clocks required for "qcom,scm-apq8084",
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"qcom,scm-msm8916" and "qcom,scm-msm8974"
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- clock-names: Must contain "core" for the core clock, "iface" for the interface
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clock and "bus" for the bus clock per the requirements of the compatible.
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- qcom,dload-mode: phandle to the TCSR hardware block and offset of the
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download mode control register (optional)
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Example for MSM8916:
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firmware {
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scm {
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compatible = "qcom,msm8916", "qcom,scm";
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clocks = <&gcc GCC_CRYPTO_CLK> ,
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<&gcc GCC_CRYPTO_AXI_CLK>,
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<&gcc GCC_CRYPTO_AHB_CLK>;
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clock-names = "core", "bus", "iface";
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};
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};
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