38 lines
1.5 KiB
Plaintext
38 lines
1.5 KiB
Plaintext
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PMIC supply(S1) current limiting driver(SUPPLY_LM)
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=====================================
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This driver is a current limit management module to help manage
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instantaneous peak current drawn by multiple subsystems on shared
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supply. The inputs to the mitigation algorithm are current states
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of different subsystems sharing this supply like cpu frequency,
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gpu frequency, number of cores online, soc temperature, core leakage,
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and modem state. It throttles cpu frequency and limits number of
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online cores to reduce the dynamic current so as to keep the total
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current drawn from supply in safe limits.
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The device tree parameters for SUPPLY_LM driver are:
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Required parameters:
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- compatible : Must be "qcom,supply-lm"
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- interrupts : SUPPLY_LM modem to apps interrupt details.
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- reg : Base addresses of the SUPPLY_LM modem interrupt data and
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its size in bytes.
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- reg-names : Name of SUPPLY_LM modem register in reg node.
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- qcom,supply-lm-very-hot-temp-range : SUPPLY_LM very hot temperature range
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info. It expects trigger and clear thresholds in order.
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- qcom,supply-lm-hot-temp-range : SUPPLY_LM hot temperature range info.
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It expects trigger and clear thresholds in order.
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- gpu-dev-opp: Phandle for gpu dev.
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Example:
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qcom,supply-lm {
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compatible = "qcom,supply-lm";
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interrupts = <0 133 4>;
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reg = <0x01946000 0x8>; /* TCSR_TCSR_S1LM_MODEM_TO_APPS_INT and
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* TCSR_TCSR_S1LM_MODEM_TO_APPS_INT_DATA */
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reg-names = "intr_reg";
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qcom,supply-lm-very-hot-temp-range = <75 72>;
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qcom,supply-lm-hot-temp-range = <65 62>;
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gpu-dev-opp = <&msm_gpu>;
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};
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