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Merge "dt-bindings: devfreq: Add DT bindings for bimc bwmon driver"
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25
bindings/devfreq/bimc-bwmon.txt
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bindings/devfreq/bimc-bwmon.txt
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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"
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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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- 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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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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};
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bindings/devfreq/devfreq_icc.txt
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bindings/devfreq/devfreq_icc.txt
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MSM devfreq icc device
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devfreq icc is a device that represents a MSM device's BW requirements from its
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master port(s) to a different device's slave port(s) in a MSM SoC. This
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device is typically used to vote for BW requirements from a device's (Eg:
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CPU, GPU) master port(s) to the slave (Eg: DDR) port(s).
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Required properties:
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- compatible: Must be "qcom,devfreq-icc"
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- interconnects: Pairs of phandles and interconnect provider specificers
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to denote the edge source and destination ports of the
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desired interconnect path.
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- qcom,bw-tbl: A list of meaningful instantaneous bandwidth values
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(in MB/s) that can be requested from the device
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master port to the slave port. The list of values
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depend on the supported bus/slave frequencies and the
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bus width.
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Optional properties:
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- qcom,active-only: Indicates that the bandwidth votes need to be
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enforced only when the CPU subsystem is active.
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- governor: Initial governor to use for the device.
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Default: "performance"
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Example:
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qcom,cpubw {
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compatible = "qcom,devfreq-icc";
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interconnects = <&mc_virt MASTER_LLCC &mc_virt SLAVE_EBI1>;
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qcom,active-only;
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qcom,bw-tbl =
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< 572 /* 75 MHz */ >,
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< 1144 /* 150 MHz */ >,
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< 1525 /* 200 MHz */ >,
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< 2342 /* 307 MHz */ >,
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< 3509 /* 460 MHz */ >,
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< 4684 /* 614 MHz */ >,
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< 6103 /* 800 MHz */ >,
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< 7102 /* 931 MHz */ >;
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};
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