41 lines
1.5 KiB
Plaintext
41 lines
1.5 KiB
Plaintext
MSM BIMC bandwidth monitor device
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bimc-bwmon is a device that represents the MSM BIMC bandwidth monitors that
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can be used to measure the bandwidth of read/write traffic from the BIMC
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master ports. For example, the CPU subsystem sits on one BIMC master port.
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Required properties:
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- compatible: Must be "qcom,bimc-bwmon", "qcom,bimc-bwmon2",
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"qcom,bimc-bwmon3" or "qcom,bimc-bwmon4" or
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"qcom,bimc-bwmon5"
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- reg: Pairs of physical base addresses and region sizes of
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memory mapped registers.
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- reg-names: Names of the bases for the above registers. Expected
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bases are: "base", "global_base"
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"global_base" should not be specified for
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"qcom,bimc-bwmon5" compatibles.
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- interrupts: Lists the threshold IRQ.
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- qcom,mport: The hardware master port that this device can monitor
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- qcom,target-dev: The DT device that corresponds to this master port
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- qcom,hw-timer-hz: Hardware sampling rate in Hz. This field must be
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specified for "qcom,bimc-bwmon4"
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Optional properties:
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- qcom,byte-mid-match: Byte count MID match value
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- qcom,byte-mid-mask: Byte count MID mask value
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- qcom,count-unit: Number of bytes monitor counts in
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Example:
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qcom,cpu-bwmon {
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compatible = "qcom,bimc-bwmon";
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reg = <0xfc388000 0x300>, <0xfc381000 0x200>;
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reg-names = "base", "global_base";
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interrupts = <0 183 1>;
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qcom,mport = <0>;
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qcom,target-dev = <&cpubw>;
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qcom,hw-timer-hz = <19200000>;
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qcom,byte-mid-match = <0x1e00>;
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qcom,byte-mid-mask = <0x1e00>;
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qcom,count-unit = <0x100000>;
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};
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