target/linux/brcm2708/patches-4.4/0549-config-Add-ABX80X-RTC-driver-and-overlay.patch

   1 From da62b2064a19346529bf827e8d7fbbd76e5e7ead Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Wed, 23 Nov 2016 14:19:40 +0000
   4 Subject: [PATCH] config: Add ABX80X RTC driver and overlay
   5
   6 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
   7 ---
   8  arch/arm/boot/dts/overlays/README              | 12 ++++++++++--
   9  arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts | 12 +++++++++++-
  10  arch/arm/configs/bcm2709_defconfig             |  1 +
  11  arch/arm/configs/bcmrpi_defconfig              |  1 +
  12  4 files changed, 23 insertions(+), 3 deletions(-)
  13
  14 --- a/arch/arm/boot/dts/overlays/README
  15 +++ b/arch/arm/boot/dts/overlays/README
  16 @@ -498,7 +498,11 @@ Params: addr                    I2C addr
  17  Name:   i2c-rtc
  18  Info:   Adds support for a number of I2C Real Time Clock devices
  19  Load:   dtoverlay=i2c-rtc,<param>=<val>
  20 -Params: ds1307                  Select the DS1307 device
  21 +Params: abx80x                  Select one of the ABx80x family:
  22 +                                  AB0801, AB0803, AB0804, AB0805,
  23 +                                  AB1801, AB1803, AB1804, AB1805
  24 +
  25 +        ds1307                  Select the DS1307 device
  26
  27          ds1339                  Select the DS1339 device
  28
  29 @@ -514,7 +518,11 @@ Params: ds1307                  Select t
  30
  31          pcf8563                 Select the PCF8563 device
  32
  33 -        trickle-resistor-ohms   Resistor value for trickle charge (DS1339-only)
  34 +        trickle-diode-type      Diode type for trickle charge - "standard" or
  35 +                                "schottky" (ABx80x only)
  36 +
  37 +        trickle-resistor-ohms   Resistor value for trickle charge (DS1339,
  38 +                                ABx80x)
  39
  40          wakeup-source           Specify that the RTC can be used as a wakeup
  41                                  source
  42 --- a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
  43 +++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
  44 @@ -12,6 +12,13 @@
  45                         #size-cells = <0>;
  46                         status = "okay";
  47
  48 +                       abx80x: abx80x@69 {
  49 +                               compatible = "abracon,abx80x";
  50 +                               reg = <0x69>;
  51 +                               abracon,tc-diode = "standard";
  52 +                               abracon,tc-resistor = <0>;
  53 +                               status = "disable";
  54 +                       };
  55                         ds1307: ds1307@68 {
  56                                 compatible = "maxim,ds1307";
  57                                 reg = <0x68>;
  58 @@ -56,6 +63,7 @@
  59                 };
  60         };
  61         __overrides__ {
  62 +               abx80x = <&abx80x>,"status";
  63                 ds1307 = <&ds1307>,"status";
  64                 ds1339 = <&ds1339>,"status";
  65                 ds3231 = <&ds3231>,"status";
  66 @@ -64,7 +72,9 @@
  67                 pcf2127 = <&pcf2127>,"status";
  68                 pcf8523 = <&pcf8523>,"status";
  69                 pcf8563 = <&pcf8563>,"status";
  70 -               trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0";
  71 +               trickle-diode-type = <&abx80x>,"abracon,tc-diode";
  72 +               trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
  73 +                                       <&abx80x>,"abracon,tc-resistor";
  74                 wakeup-source = <&ds1339>,"wakeup-source?",
  75                                 <&ds3231>,"wakeup-source?",
  76                                 <&mcp7940x>,"wakeup-source?",
  77 --- a/arch/arm/configs/bcm2709_defconfig
  78 +++ b/arch/arm/configs/bcm2709_defconfig
  79 @@ -1060,6 +1060,7 @@ CONFIG_LEDS_TRIGGER_CAMERA=m
  80  CONFIG_LEDS_TRIGGER_INPUT=y
  81  CONFIG_RTC_CLASS=y
  82  # CONFIG_RTC_HCTOSYS is not set
  83 +CONFIG_RTC_DRV_ABX80X=m
  84  CONFIG_RTC_DRV_DS1307=m
  85  CONFIG_RTC_DRV_DS1374=m
  86  CONFIG_RTC_DRV_DS1672=m
  87 --- a/arch/arm/configs/bcmrpi_defconfig
  88 +++ b/arch/arm/configs/bcmrpi_defconfig
  89 @@ -1067,6 +1067,7 @@ CONFIG_LEDS_TRIGGER_CAMERA=m
  90  CONFIG_LEDS_TRIGGER_INPUT=y
  91  CONFIG_RTC_CLASS=y
  92  # CONFIG_RTC_HCTOSYS is not set
  93 +CONFIG_RTC_DRV_ABX80X=m
  94  CONFIG_RTC_DRV_DS1307=m
  95  CONFIG_RTC_DRV_DS1374=m
  96  CONFIG_RTC_DRV_DS1672=m