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From 20dbf906033167e7c4296eee07437d52627d8ccf Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Mon, 9 Jul 2018 21:11:32 +0100
Subject: [PATCH] overlays: Add addr parameter to i2c-rtc (& -gpio)
See: https://github.com/raspberrypi/linux/issues/2611
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm/boot/dts/overlays/README | 10 +++++++
.../dts/overlays/i2c-rtc-gpio-overlay.dts | 28 +++++++++++++++++++
.../arm/boot/dts/overlays/i2c-rtc-overlay.dts | 11 ++++++++
3 files changed, 49 insertions(+)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -817,6 +817,10 @@ Params: abx80x Select o
pcf8563 Select the PCF8563 device
+ addr Sets the address for the RTC. Note that the
+ device must be configured to use the specified
+ address.
+
trickle-diode-type Diode type for trickle charge - "standard" or
"schottky" (ABx80x only)
@@ -841,6 +845,8 @@ Params: abx80x Select o
ds3231 Select the DS3231 device
+ m41t62 Select the M41T62 device
+
mcp7940x Select the MCP7940x device
mcp7941x Select the MCP7941x device
@@ -851,6 +857,10 @@ Params: abx80x Select o
pcf8563 Select the PCF8563 device
+ addr Sets the address for the RTC. Note that the
+ device must be configured to use the specified
+ address.
+
trickle-diode-type Diode type for trickle charge - "standard" or
"schottky" (ABx80x only)
--- a/arch/arm/boot/dts/overlays/i2c-rtc-gpio-overlay.dts
+++ b/arch/arm/boot/dts/overlays/i2c-rtc-gpio-overlay.dts
@@ -159,6 +159,21 @@
};
};
+ fragment@10 {
+ 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>,"+1";
ds1307 = <0>,"+2";
@@ -169,6 +184,19 @@
pcf2127 = <0>,"+7";
pcf8523 = <0>,"+8";
pcf8563 = <0>,"+9";
+ m41t62 = <0>,"+10";
+
+ addr = <&abx80x>, "reg:0",
+ <&ds1307>, "reg:0",
+ <&ds1339>, "reg:0",
+ <&ds3231>, "reg:0",
+ <&mcp7940x>, "reg:0",
+ <&mcp7941x>, "reg:0",
+ <&pcf2127>, "reg:0",
+ <&pcf8523>, "reg:0",
+ <&pcf8563>, "reg:0",
+ <&m41t62>, "reg:0";
+
trickle-diode-type = <&abx80x>,"abracon,tc-diode";
trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
<&abx80x>,"abracon,tc-resistor";
--- a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
+++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
@@ -169,6 +169,17 @@
pcf8523 = <0>,"+7";
pcf8563 = <0>,"+8";
m41t62 = <0>,"+9";
+
+ addr = <&abx80x>, "reg:0",
+ <&ds1307>, "reg:0",
+ <&ds1339>, "reg:0",
+ <&ds3231>, "reg:0",
+ <&mcp7940x>, "reg:0",
+ <&mcp7941x>, "reg:0",
+ <&pcf2127>, "reg:0",
+ <&pcf8523>, "reg:0",
+ <&pcf8563>, "reg:0",
+ <&m41t62>, "reg:0";
trickle-diode-type = <&abx80x>,"abracon,tc-diode";
trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
<&abx80x>,"abracon,tc-resistor";
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