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