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openmptcprouter/root/target/linux/brcm2708/patches-4.19/0431-overlays-Add-rv3028-backup-switchover-support-to-i2c.patch
2019-04-22 17:10:09 +02:00

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From ab8652c03fa081b27de7e28a74c2536cb2aa3e5b Mon Sep 17 00:00:00 2001
From: Phil Howard <phil@gadgetoid.com>
Date: Fri, 29 Mar 2019 10:59:55 +0000
Subject: [PATCH 431/432] 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(+)
diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
index 1f1fb9a3645e..2e5094b2cd96 100644
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1013,6 +1013,9 @@ Params: abx80x Select one of the ABx80x family:
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
diff --git a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
index 55f443d23aee..ad09fe122ad2 100644
--- 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?",
--
2.19.1