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authorZev Weiss <zev@bewilderbeest.net>2021-09-28 12:22:41 +0300
committerGuenter Roeck <linux@roeck-us.net>2021-10-12 17:22:41 +0300
commit94ee5fcc240fe9ffdd1c3206a48d5bdf425ea478 (patch)
tree547e55f847342927737e0f6bc6f01ada14760355 /Documentation/hwmon
parentb7792f3ea3924a3534e392c1d9125fdc93a60d70 (diff)
downloadlinux-94ee5fcc240fe9ffdd1c3206a48d5bdf425ea478.tar.xz
hwmon: (pmbus/lm25066) Support configurable sense resistor values
The appropriate mantissa values for the lm25066 family's direct-format current and power readings are a function of the sense resistor employed between the SENSE and VIN pins of the chip. Instead of assuming that resistance is always the same 1mOhm as used in the datasheet, allow it to be configured via a device-tree property ("shunt-resistor-micro-ohms"). Signed-off-by: Zev Weiss <zev@bewilderbeest.net> Link: https://lore.kernel.org/r/20210928092242.30036-8-zev@bewilderbeest.net [groeck: Fixed checkpatch warnings] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
-rw-r--r--Documentation/hwmon/lm25066.rst2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/hwmon/lm25066.rst b/Documentation/hwmon/lm25066.rst
index 9f1d7e4d3ca1..a2098eb24090 100644
--- a/Documentation/hwmon/lm25066.rst
+++ b/Documentation/hwmon/lm25066.rst
@@ -79,6 +79,8 @@ This driver does not auto-detect devices. You will have to instantiate the
devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
details.
+The shunt (sense) resistor value can be configured by a device tree property;
+see Documentation/devicetree/bindings/hwmon/pmbus/ti,lm25066.yaml for details.
Platform data support
---------------------