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From da62b2064a19346529bf827e8d7fbbd76e5e7ead Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Wed, 23 Nov 2016 14:19:40 +0000
Subject: [PATCH] config: Add ABX80X RTC driver and overlay
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm/boot/dts/overlays/README | 12 ++++++++++--
arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts | 12 +++++++++++-
arch/arm/configs/bcm2709_defconfig | 1 +
arch/arm/configs/bcmrpi_defconfig | 1 +
4 files changed, 23 insertions(+), 3 deletions(-)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -498,7 +498,11 @@ Params: addr I2C addr
Name: i2c-rtc
Info: Adds support for a number of I2C Real Time Clock devices
Load: dtoverlay=i2c-rtc,<param>=<val>
-Params: ds1307 Select the DS1307 device
+Params: abx80x Select one of the ABx80x family:
+ AB0801, AB0803, AB0804, AB0805,
+ AB1801, AB1803, AB1804, AB1805
+
+ ds1307 Select the DS1307 device
ds1339 Select the DS1339 device
@@ -514,7 +518,11 @@ Params: ds1307 Select t
pcf8563 Select the PCF8563 device
- trickle-resistor-ohms Resistor value for trickle charge (DS1339-only)
+ trickle-diode-type Diode type for trickle charge - "standard" or
+ "schottky" (ABx80x only)
+
+ trickle-resistor-ohms Resistor value for trickle charge (DS1339,
+ ABx80x)
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
@@ -12,6 +12,13 @@
#size-cells = <0>;
status = "okay";
+ abx80x: abx80x@69 {
+ compatible = "abracon,abx80x";
+ reg = <0x69>;
+ abracon,tc-diode = "standard";
+ abracon,tc-resistor = <0>;
+ status = "disable";
+ };
ds1307: ds1307@68 {
compatible = "maxim,ds1307";
reg = <0x68>;
@@ -56,6 +63,7 @@
};
};
__overrides__ {
+ abx80x = <&abx80x>,"status";
ds1307 = <&ds1307>,"status";
ds1339 = <&ds1339>,"status";
ds3231 = <&ds3231>,"status";
@@ -64,7 +72,9 @@
pcf2127 = <&pcf2127>,"status";
pcf8523 = <&pcf8523>,"status";
pcf8563 = <&pcf8563>,"status";
- trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0";
+ 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?",
--- a/arch/arm/configs/bcm2709_defconfig
+++ b/arch/arm/configs/bcm2709_defconfig
@@ -1060,6 +1060,7 @@ CONFIG_LEDS_TRIGGER_CAMERA=m
CONFIG_LEDS_TRIGGER_INPUT=y
CONFIG_RTC_CLASS=y
# CONFIG_RTC_HCTOSYS is not set
+CONFIG_RTC_DRV_ABX80X=m
CONFIG_RTC_DRV_DS1307=m
CONFIG_RTC_DRV_DS1374=m
CONFIG_RTC_DRV_DS1672=m
--- a/arch/arm/configs/bcmrpi_defconfig
+++ b/arch/arm/configs/bcmrpi_defconfig
@@ -1067,6 +1067,7 @@ CONFIG_LEDS_TRIGGER_CAMERA=m
CONFIG_LEDS_TRIGGER_INPUT=y
CONFIG_RTC_CLASS=y
# CONFIG_RTC_HCTOSYS is not set
+CONFIG_RTC_DRV_ABX80X=m
CONFIG_RTC_DRV_DS1307=m
CONFIG_RTC_DRV_DS1374=m
CONFIG_RTC_DRV_DS1672=m
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