Merge branch 'cpuidle' into release

[karo-tx-linux.git] / Documentation / devicetree / bindings / iio / adc / vf610-adc.txt

diff --git a/Documentation/devicetree/bindings/iio/adc/vf610-adc.txt b/Documentation/devicetree/bindings/iio/adc/vf610-adc.txt
index 3eb40e20c1433753c355efe147137b2748e60ac4..1aad0514e6474be4171e854ae5265d872cc7c89c 100644 (file)
--- a/Documentation/devicetree/bindings/iio/adc/vf610-adc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/vf610-adc.txt
@@ -17,6 +17,11 @@ Recommended properties:
   - Frequency in normal mode (ADLPC=0, ADHSC=0)
   - Frequency in high-speed mode (ADLPC=0, ADHSC=1)
   - Frequency in low-power mode (ADLPC=1, ADHSC=0)
+- min-sample-time: Minimum sampling time in nanoseconds. This value has
+  to be chosen according to the conversion mode and the connected analog
+  source resistance (R_as) and capacitance (C_as). Refer the datasheet's
+  operating requirements. A safe default across a wide range of R_as and
+  C_as as well as conversion modes is 1000ns.
 
 Example:
 adc0: adc@4003b000 {