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