overlays: i2c-rtc: add m41t62

Add support for the ST M41T62 real-time clock chip.

diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
index 16c0a9e043ecc59cb7b04107050b0a2749b325f1..d4eeeae10671ddfb43c86c1317cea65688905d9f 100644 (file)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -674,6 +674,8 @@ Params: abx80x                  Select one of the ABx80x family:
 
         ds3231                  Select the DS3231 device
 
+        m41t62                  Select the M41T62 device
+
         mcp7940x                Select the MCP7940x device
 
         mcp7941x                Select the MCP7941x device

diff --git a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
index 6140f172a86b8731782f938f76cb5dac9f28b662..fcb846a50d19cb97fc73de8b801962ac96416c20 100644 (file)
--- a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
+++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
@@ -143,6 +143,21 @@
                };
        };
 
+       fragment@9 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       m41t62: m41t62@68 {
+                               compatible = "st,m41t62";
+                               reg = <0x68>;
+                               status = "okay";
+                       };
+               };
+       };
+
        __overrides__ {
                abx80x = <0>,"+0";
                ds1307 = <0>,"+1";
@@ -153,12 +168,14 @@
                pcf2127 = <0>,"+6";
                pcf8523 = <0>,"+7";
                pcf8563 = <0>,"+8";
+               m41t62 = <0>,"+9";
                trickle-diode-type = <&abx80x>,"abracon,tc-diode";
                trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
                                        <&abx80x>,"abracon,tc-resistor";
                wakeup-source = <&ds1339>,"wakeup-source?",
                                <&ds3231>,"wakeup-source?",
                                <&mcp7940x>,"wakeup-source?",
-                               <&mcp7941x>,"wakeup-source?";
+                               <&mcp7941x>,"wakeup-source?",
+                               <&m41t62>,"wakeup-source?";
        };
 };