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[1/3,v2] dt-bindings: abx80x: Add autocal-filter property

Message ID 20200612223551.282113-1-kevin+linux@km6g.us
State Superseded
Headers show
Series [1/3,v2] dt-bindings: abx80x: Add autocal-filter property | expand

Commit Message

Kevin P. Fleming June 12, 2020, 10:35 p.m. UTC 
Add a property to allow control of the autocalibration filter
capacitor.

Signed-off-by: Kevin P. Fleming <kevin+linux@km6g.us>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Rob Herring <robh+dt@kernel.org>
To: linux-rtc@vger.kernel.org
To: devicetree@vger.kernel.org
---
v2: Change property to an integer value, and describe possible values
 Documentation/devicetree/bindings/rtc/abracon,abx80x.txt | 8 ++++++++
 1 file changed, 8 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/rtc/abracon,abx80x.txt b/Documentation/devicetree/bindings/rtc/abracon,abx80x.txt
index 2405e35a1bc0f..18210627b8470 100644
--- a/Documentation/devicetree/bindings/rtc/abracon,abx80x.txt
+++ b/Documentation/devicetree/bindings/rtc/abracon,abx80x.txt
@@ -29,3 +29,11 @@  and valid to enable charging:
  - "abracon,tc-diode": should be "standard" (0.6V) or "schottky" (0.3V)
  - "abracon,tc-resistor": should be <0>, <3>, <6> or <11>. 0 disables the output
                           resistor, the other values are in kOhm.
+
+All of the devices can have a 47pf capacitor attached to increase the
+autocalibration accuracy of their RC oscillators. To enable or disable usage
+of the capacitor the following property can be defined:
+
+ - "abracon,autocal-filter": should be <0> or <1>. 0 indicates that there
+                             is no capacitor attached, 1 indicates that there
+			     is a capacitor attached.