1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-6.1/950-0926-dt-bindings-update-rpi-rtc-binding.patch b/target/linux/bcm27xx/patches-6.1/950-0926-dt-bindings-update-rpi-rtc-binding.patch
new file mode 100644
index 0000000000..ffc5cc1a9d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-6.1/950-0926-dt-bindings-update-rpi-rtc-binding.patch
@@ -0,0 +1,29 @@
+From a7a3679a148e40879f1ce77580d9edf64cb5b51c Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.com>
+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 <jonathan@raspberrypi.com>
+---
+ 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>;
+ 	};