1 files changed, 63 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0493-overlays-i2c-rtc-Add-the-Dallas-DS1340.patch b/target/linux/bcm27xx/patches-5.10/950-0493-overlays-i2c-rtc-Add-the-Dallas-DS1340.patch
new file mode 100644
index 0000000000..08b1f4a1bc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0493-overlays-i2c-rtc-Add-the-Dallas-DS1340.patch
@@ -0,0 +1,63 @@
+From fd478b369992e56665de3aabf0e19e24b5fa5e43 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 26 Feb 2021 14:19:00 +0000
+Subject: [PATCH] overlays: i2c-rtc: Add the Dallas DS1340
+
+See: https://github.com/raspberrypi/linux/issues/4180
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README              |  2 ++
+ arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts | 16 ++++++++++++++++
+ 2 files changed, 18 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1311,6 +1311,8 @@ Params: abx80x                  Select o
+ 
+         ds1339                  Select the DS1339 device
+ 
++        ds1340                  Select the DS1340 device
++
+         ds3231                  Select the DS3231 device
+ 
+         m41t62                  Select the M41T62 device
+--- a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
++++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
+@@ -231,6 +231,20 @@
+ 		};
+ 	};
+ 
++	fragment@17 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			ds1340: ds1340@68 {
++				compatible = "dallas,ds1340";
++				trickle-resistor-ohms = <0>;
++				reg = <0x68>;
++			};
++		};
++	};
++
+ 	frag100: fragment@100 {
+ 		target = <&i2c_arm>;
+ 		i2cbus: __overlay__ {
+@@ -242,6 +256,7 @@
+ 		abx80x = <0>,"+0";
+ 		ds1307 = <0>,"+1";
+ 		ds1339 = <0>,"+2";
++		ds1340 = <0>,"+17";
+ 		ds3231 = <0>,"+3";
+ 		mcp7940x = <0>,"+4";
+ 		mcp7941x = <0>,"+5";
+@@ -273,6 +288,7 @@
+ 		trickle-diode-type = <&abx80x>,"abracon,tc-diode",
+ 				     <&rv1805>,"abracon,tc-diode";
+ 		trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
++					<&ds1340>,"trickle-resistor-ohms:0",
+ 					<&abx80x>,"abracon,tc-resistor:0",
+ 					<&rv3028>,"trickle-resistor-ohms:0",
+ 					<&rv1805>,"abracon,tc-resistor:0";