target/linux/bcm27xx/patches-4.19/950-0340-overlays-Add-rv3028-to-i2c-rtc.patch

   1 From 67dd8e4c8ccf5d331960c7e936e5b03a9f92496d Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Thu, 28 Mar 2019 13:26:59 +0000
   4 Subject: [PATCH] overlays: Add rv3028 to i2c-rtc
   5
   6 See: https://github.com/raspberrypi/linux/issues/2912
   7
   8 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
   9 ---
  10  arch/arm/boot/dts/overlays/README             |  4 +++-
  11  .../arm/boot/dts/overlays/i2c-rtc-overlay.dts | 19 ++++++++++++++++++-
  12  2 files changed, 21 insertions(+), 2 deletions(-)
  13
  14 --- a/arch/arm/boot/dts/overlays/README
  15 +++ b/arch/arm/boot/dts/overlays/README
  16 @@ -939,6 +939,8 @@ Params: abx80x                  Select o
  17
  18          pcf8563                 Select the PCF8563 device
  19
  20 +        rv3028                  Select the Micro Crystal RV3028 device
  21 +
  22          addr                    Sets the address for the RTC. Note that the
  23                                  device must be configured to use the specified
  24                                  address.
  25 @@ -947,7 +949,7 @@ Params: abx80x                  Select o
  26                                  "schottky" (ABx80x only)
  27
  28          trickle-resistor-ohms   Resistor value for trickle charge (DS1339,
  29 -                                ABx80x)
  30 +                                ABx80x, RV3028)
  31
  32          wakeup-source           Specify that the RTC can be used as a wakeup
  33                                  source
  34 --- a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
  35 +++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
  36 @@ -158,6 +158,21 @@
  37                 };
  38         };
  39
  40 +       fragment@10 {
  41 +               target = <&i2c_arm>;
  42 +               __dormant__ {
  43 +                       #address-cells = <1>;
  44 +                       #size-cells = <0>;
  45 +                       status = "okay";
  46 +
  47 +                       rv3028: rv3028@52 {
  48 +                               compatible = "microcrystal,rv3028";
  49 +                               reg = <0x52>;
  50 +                               status = "okay";
  51 +                       };
  52 +               };
  53 +       };
  54 +
  55         __overrides__ {
  56                 abx80x = <0>,"+0";
  57                 ds1307 = <0>,"+1";
  58 @@ -169,6 +184,7 @@
  59                 pcf8523 = <0>,"+7";
  60                 pcf8563 = <0>,"+8";
  61                 m41t62 = <0>,"+9";
  62 +               rv3028 = <0>,"+10";
  63
  64                 addr = <&abx80x>, "reg:0",
  65                        <&ds1307>, "reg:0",
  66 @@ -182,7 +198,8 @@
  67                        <&m41t62>, "reg:0";
  68                 trickle-diode-type = <&abx80x>,"abracon,tc-diode";
  69                 trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
  70 -                                       <&abx80x>,"abracon,tc-resistor";
  71 +                                       <&abx80x>,"abracon,tc-resistor",
  72 +                                       <&rv3028>,"trickle-resistor-ohms:0";
  73                 wakeup-source = <&ds1339>,"wakeup-source?",
  74                                 <&ds3231>,"wakeup-source?",
  75                                 <&mcp7940x>,"wakeup-source?",