43 lines
1.4 KiB
Text
43 lines
1.4 KiB
Text
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* Cx iPeak driver to handle requests from various multimedia clients.
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Cx ipeak HW module is used to limit the current drawn by various subsystem
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blocks on Cx power rail. Each client needs to set their bit in tcsr register
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if it is going to cross its own threshold. If all clients are going to cross
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their thresholds then Cx ipeak hw module will raise an interrupt to cDSP block
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to throttle cDSP's fmax.
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There are SOC like SCUBA where Cx ipeak HW module raised interrupt will
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throttle frequency of other victim clients.
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Required properties:
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- #size-cells : Must be 1
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- compatible : name of the component used for driver matching, should be one
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"qcom,cx-ipeak-v1", "qcom,cx-ipeak-v2"
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- reg : physical base address and length of the register set(s), SRAM and XPU
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of the component.
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Optional properties:
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- interrupts : Danger and Safe interrupts details having interrupt number and
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type of interrupt.
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- interrupt-names : Identifier names for Danger and Safe interrupts.
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- victims_table : Victim clients details having client ID, victim ID and
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limit frequency to be applied in case of danger interrupt.
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Example:
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cx_ipeak_lm: cx_ipeak@1fe5040 {
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#size-cells = <1>;
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compatible = "qcom,cx-ipeak-v1";
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reg = <0x01fe5040 0x28>;
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interrupts = <0 415 IRQ_TYPE_EDGE_RISING>,
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<0 416 IRQ_TYPE_EDGE_RISING>;
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interrupt-names = "cx_ipeak_danger", "cx_ipeak_safe";
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victims_table = <1 0 844800000>;
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};
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