diff options
| author | Subbaraman Narayanamurthy <subbaram@codeaurora.org> | 2017-05-17 17:43:22 -0700 |
|---|---|---|
| committer | Subbaraman Narayanamurthy <subbaram@codeaurora.org> | 2017-05-31 19:01:05 -0700 |
| commit | 6124f7574427070e5772366e3ceb53151303104f (patch) | |
| tree | 7bd0c1953d7ddf05765b020c718227f0b747bb17 /Documentation | |
| parent | 3d1963e351de96cc19d692427d54652fe44bdaf0 (diff) | |
qpnp-fg-gen3: configure ESR timers dynamically based on charge termination
With ESR discharge timer retry, max having same value, ESR pulse
can fire frequently when battery FET is open past charge
termination. This frequent ESR pulses increase power consumption
when the device is idle.
Upon charge termination, change the ESR discharging timer retry
to 0 so that ESR pulse can fire less frequently saving power.
Add support for this through fg_esr_timer_config() based on end
of charge and sleep conditions.
Currently, retry/max for ESR charging and discharging timers are
configured with the same value specified through device tree.
Extend the device tree property to take in different retry/max
values for those timers.
Change-Id: Ib30b8ae7d893b5cab00ed83dd7318b53e3b63ac1
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/power/supply/qcom/qpnp-fg-gen3.txt | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/power/supply/qcom/qpnp-fg-gen3.txt b/Documentation/devicetree/bindings/power/supply/qcom/qpnp-fg-gen3.txt index 12d32ec74369..012368275db3 100644 --- a/Documentation/devicetree/bindings/power/supply/qcom/qpnp-fg-gen3.txt +++ b/Documentation/devicetree/bindings/power/supply/qcom/qpnp-fg-gen3.txt @@ -145,22 +145,30 @@ First Level Node - FG Gen3 device - qcom,fg-esr-timer-charging Usage: optional - Value type: <u32> + Value type: <prop-encoded-array> Definition: Number of cycles between ESR pulses while the battery is - charging. + charging. Array of 2 elements if specified. + Element 0 - Retry value for timer + Element 1 - Maximum value for timer - qcom,fg-esr-timer-awake Usage: optional - Value type: <u32> + Value type: <prop-encoded-array> Definition: Number of cycles between ESR pulses while the system is - awake and the battery is discharging. + awake and the battery is discharging. Array of 2 elements + if specified. + Element 0 - Retry value for timer + Element 1 - Maximum value for timer - qcom,fg-esr-timer-asleep Usage: optional - Value type: <u32> + Value type: <prop-encoded-array> Definition: Number of cycles between ESR pulses while the system is asleep and the battery is discharging. This option requires - qcom,fg-esr-timer-awake to be defined. + qcom,fg-esr-timer-awake to be defined. Array of 2 elements + if specified. + Element 0 - Retry value for timer + Element 1 - Maximum value for timer - qcom,fg-esr-pulse-thresh-ma Usage: optional |