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-rw-r--r--Documentation/hwmon/ina3221.rst13
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/hwmon/ina3221.rst b/Documentation/hwmon/ina3221.rst
index 1e34abb38b59..f6007ae8f4e2 100644
--- a/Documentation/hwmon/ina3221.rst
+++ b/Documentation/hwmon/ina3221.rst
@@ -46,4 +46,17 @@ samples Number of samples using in the averaging mode.
Supports the list of number of samples:
1, 4, 16, 64, 128, 256, 512, 1024
+
+update_interval Data conversion time in millisecond, following:
+
+ update_interval = C x S x (BC + SC)
+
+ * C: number of enabled channels
+ * S: number of samples
+ * BC: bus-voltage conversion time in millisecond
+ * SC: shunt-voltage conversion time in millisecond
+
+ Affects both Bus- and Shunt-voltage conversion time.
+ Note that setting update_interval to 0ms sets both BC
+ and SC to 140 us (minimum conversion time).
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