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author | Emmanuel Vadot <manu@FreeBSD.org> | 2017-03-07 12:41:06 +0000 |
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committer | Emmanuel Vadot <manu@FreeBSD.org> | 2017-03-07 12:41:06 +0000 |
commit | ff018dbf5bb142aa83bd955e5b6c55d66e9e9c1e (patch) | |
tree | 5cd0b74d984dae06ea54b6b09998163538d3c162 /Bindings/power/supply/ltc2941.txt | |
parent | c7716441be3a4a48aa7b7cdf69a15625c1cd8ef5 (diff) | |
download | src-ff018dbf5bb142aa83bd955e5b6c55d66e9e9c1e.tar.gz src-ff018dbf5bb142aa83bd955e5b6c55d66e9e9c1e.zip |
Update to Linux 4.10vendor/device-tree/4.10
Notes
Notes:
svn path=/vendor/device-tree/dist/; revision=314847
svn path=/vendor/device-tree/4.10/; revision=314848; tag=vendor/device-tree/4.10
Diffstat (limited to 'Bindings/power/supply/ltc2941.txt')
-rw-r--r-- | Bindings/power/supply/ltc2941.txt | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Bindings/power/supply/ltc2941.txt b/Bindings/power/supply/ltc2941.txt new file mode 100644 index 000000000000..ea42ae12d924 --- /dev/null +++ b/Bindings/power/supply/ltc2941.txt @@ -0,0 +1,27 @@ +binding for LTC2941 and LTC2943 battery gauges + +Both the LTC2941 and LTC2943 measure battery capacity. +The LTC2943 is compatible with the LTC2941, it adds voltage and +temperature monitoring, and uses a slightly different conversion +formula for the charge counter. + +Required properties: +- compatible: Should contain "ltc2941" or "ltc2943" which also indicates the + type of I2C chip attached. +- reg: The 7-bit I2C address. +- lltc,resistor-sense: The sense resistor value in milli-ohms. Can be a 32-bit + negative value when the battery has been connected to the wrong end of the + resistor. +- lltc,prescaler-exponent: The prescaler exponent as explained in the datasheet. + This determines the range and accuracy of the gauge. The value is programmed + into the chip only if it differs from the current setting. The setting is + lost when the battery is disconnected. + +Example from the Topic Miami Florida board: + + fuelgauge: ltc2943@64 { + compatible = "ltc2943"; + reg = <0x64>; + lltc,resistor-sense = <15>; + lltc,prescaler-exponent = <5>; /* 2^(2*5) = 1024 */ + }; |