Merge tag 'block-5.14-2021-08-07' of git://git.kernel.dk/linux-block

[linux-2.6-microblaze.git] / Documentation / devicetree / bindings / rtc / rtc-m41t80.txt

diff --git a/Documentation/devicetree/bindings/rtc/rtc-m41t80.txt b/Documentation/devicetree/bindings/rtc/rtc-m41t80.txt
index c746cb2..cdd196b 100644 (file)
--- a/Documentation/devicetree/bindings/rtc/rtc-m41t80.txt
+++ b/Documentation/devicetree/bindings/rtc/rtc-m41t80.txt
@@ -21,10 +21,19 @@ Optional properties:
                       clock name
 - wakeup-source: Enables wake up of host system on alarm
 
+Optional child node:
+- clock: Provide this if the square wave pin is used as boot-enabled fixed clock.
+
 Example:
        rtc@68 {
                compatible = "st,m41t80";
                reg = <0x68>;
                interrupt-parent = <&UIC0>;
                interrupts = <0x9 0x8>;
+
+               clock {
+                       compatible = "fixed-clock";
+                       #clock-cells = <0>;
+                       clock-frequency = <32768>;
+               };
        };