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Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0355-overlays-Add-rv3028-to-i2c-rtc.patch')
-rw-r--r--target/linux/brcm2708/patches-4.19/950-0355-overlays-Add-rv3028-to-i2c-rtc.patch75
1 files changed, 75 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0355-overlays-Add-rv3028-to-i2c-rtc.patch b/target/linux/brcm2708/patches-4.19/950-0355-overlays-Add-rv3028-to-i2c-rtc.patch
new file mode 100644
index 0000000000..22280224f1
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0355-overlays-Add-rv3028-to-i2c-rtc.patch
@@ -0,0 +1,75 @@
+From 67dd8e4c8ccf5d331960c7e936e5b03a9f92496d Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 28 Mar 2019 13:26:59 +0000
+Subject: [PATCH] overlays: Add rv3028 to i2c-rtc
+
+See: https://github.com/raspberrypi/linux/issues/2912
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/overlays/README | 4 +++-
+ .../arm/boot/dts/overlays/i2c-rtc-overlay.dts | 19 ++++++++++++++++++-
+ 2 files changed, 21 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -939,6 +939,8 @@ Params: abx80x Select o
+
+ pcf8563 Select the PCF8563 device
+
++ rv3028 Select the Micro Crystal RV3028 device
++
+ addr Sets the address for the RTC. Note that the
+ device must be configured to use the specified
+ address.
+@@ -947,7 +949,7 @@ Params: abx80x Select o
+ "schottky" (ABx80x only)
+
+ trickle-resistor-ohms Resistor value for trickle charge (DS1339,
+- ABx80x)
++ ABx80x, RV3028)
+
+ wakeup-source Specify that the RTC can be used as a wakeup
+ source
+--- a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
++++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
+@@ -158,6 +158,21 @@
+ };
+ };
+
++ fragment@10 {
++ target = <&i2c_arm>;
++ __dormant__ {
++ #address-cells = <1>;
++ #size-cells = <0>;
++ status = "okay";
++
++ rv3028: rv3028@52 {
++ compatible = "microcrystal,rv3028";
++ reg = <0x52>;
++ status = "okay";
++ };
++ };
++ };
++
+ __overrides__ {
+ abx80x = <0>,"+0";
+ ds1307 = <0>,"+1";
+@@ -169,6 +184,7 @@
+ pcf8523 = <0>,"+7";
+ pcf8563 = <0>,"+8";
+ m41t62 = <0>,"+9";
++ rv3028 = <0>,"+10";
+
+ addr = <&abx80x>, "reg:0",
+ <&ds1307>, "reg:0",
+@@ -182,7 +198,8 @@
+ <&m41t62>, "reg:0";
+ trickle-diode-type = <&abx80x>,"abracon,tc-diode";
+ trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
+- <&abx80x>,"abracon,tc-resistor";
++ <&abx80x>,"abracon,tc-resistor",
++ <&rv3028>,"trickle-resistor-ohms:0";
+ wakeup-source = <&ds1339>,"wakeup-source?",
+ <&ds3231>,"wakeup-source?",
+ <&mcp7940x>,"wakeup-source?",