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From a2fdc7a590566d99d5261badeecb644664ff0fb3 Mon Sep 17 00:00:00 2001
From: Phil Howard <phil@gadgetoid.com>
Date: Fri, 29 Mar 2019 10:59:55 +0000
Subject: [PATCH] overlays: Add rv3028 backup switchover support to
i2c-rtc
Signed-off-by: Phil Howard <phil@pimoroni.com>
---
arch/arm/boot/dts/overlays/README | 3 +++
arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts | 1 +
2 files changed, 4 insertions(+)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1013,6 +1013,9 @@ Params: abx80x Select o
wakeup-source Specify that the RTC can be used as a wakeup
source
+ backup-switchover-mode Backup power supply switch mode. Must be 0 for
+ off or 1 for Vdd < VBackup (RV3028 only)
+
Name: i2c-rtc-gpio
Info: Adds support for a number of I2C Real Time Clock devices
--- a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
+++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
@@ -200,6 +200,7 @@
trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
<&abx80x>,"abracon,tc-resistor",
<&rv3028>,"trickle-resistor-ohms:0";
+ backup-switchover-mode = <&rv3028>,"backup-switchover-mode:0";
wakeup-source = <&ds1339>,"wakeup-source?",
<&ds3231>,"wakeup-source?",
<&mcp7940x>,"wakeup-source?",
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