1 From a7a3679a148e40879f1ce77580d9edf64cb5b51c Mon Sep 17 00:00:00 2001
2 From: Jonathan Bell <jonathan@raspberrypi.com>
3 Date: Mon, 18 Sep 2023 16:33:06 +0100
4 Subject: [PATCH] dt: bindings: update rpi-rtc binding
6 Add property for bcm2712 firmware RTC driver charger control
8 Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
10 Documentation/devicetree/bindings/rtc/rtc-rpi.txt | 5 +++++
11 1 file changed, 5 insertions(+)
13 --- a/Documentation/devicetree/bindings/rtc/rtc-rpi.txt
14 +++ b/Documentation/devicetree/bindings/rtc/rtc-rpi.txt
15 @@ -9,9 +9,14 @@ Required properties:
16 compatible: should be "raspberrypi,rpi-rtc"
17 firmware: Reference to the RPi firmware device node.
20 +trickle-charge-microvolt: specify a trickle charge voltage for the backup
21 + battery in microvolts.
26 compatible = "raspberrypi,rpi-rtc";
27 firmware = <&firmware>;
28 + trickle-charge-microvolt = <3000000>;