target/linux/brcm2708/patches-4.19/950-0703-overlays-Add-PCF2129-RTC.patch

   1 From 747a71aefc4990f9db830f18c41e0a52b0d7b4e0 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Mon, 15 Jul 2019 10:39:05 +0100
   4 Subject: [PATCH 703/773] overlays: Add PCF2129 RTC
   5
   6 Add support for the PCF2129 RTC to i2c-rtc and i2c-rtc-gpio overlays.
   7 Also add rv3028 to i2c-rtc-gpio (it was missed previously), and don't
   8 attempt to set an alternate address for the PCF2127.
   9
  10 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  11 ---
  12  arch/arm/boot/dts/overlays/README             | 11 ++++-
  13  .../dts/overlays/i2c-rtc-gpio-overlay.dts     | 41 +++++++++++++++++--
  14  .../arm/boot/dts/overlays/i2c-rtc-overlay.dts | 19 ++++++++-
  15  3 files changed, 64 insertions(+), 7 deletions(-)
  16
  17 --- a/arch/arm/boot/dts/overlays/README
  18 +++ b/arch/arm/boot/dts/overlays/README
  19 @@ -1022,6 +1022,8 @@ Params: abx80x                  Select o
  20
  21          pcf2127                 Select the PCF2127 device
  22
  23 +        pcf2129                 Select the PCF2129 device
  24 +
  25          pcf8523                 Select the PCF8523 device
  26
  27          pcf8563                 Select the PCF8563 device
  28 @@ -1067,10 +1069,14 @@ Params: abx80x                  Select o
  29
  30          pcf2127                 Select the PCF2127 device
  31
  32 +        pcf2129                 Select the PCF2129 device
  33 +
  34          pcf8523                 Select the PCF8523 device
  35
  36          pcf8563                 Select the PCF8563 device
  37
  38 +        rv3028                  Select the Micro Crystal RV3028 device
  39 +
  40          addr                    Sets the address for the RTC. Note that the
  41                                  device must be configured to use the specified
  42                                  address.
  43 @@ -1079,11 +1085,14 @@ Params: abx80x                  Select o
  44                                  "schottky" (ABx80x only)
  45
  46          trickle-resistor-ohms   Resistor value for trickle charge (DS1339,
  47 -                                ABx80x)
  48 +                                ABx80x, RV3028)
  49
  50          wakeup-source           Specify that the RTC can be used as a wakeup
  51                                  source
  52
  53 +        backup-switchover-mode  Backup power supply switch mode. Must be 0 for
  54 +                                off or 1 for Vdd < VBackup (RV3028 only)
  55 +
  56          i2c_gpio_sda            GPIO used for I2C data (default "23")
  57
  58          i2c_gpio_scl            GPIO used for I2C clock (default "24")
  59 --- a/arch/arm/boot/dts/overlays/i2c-rtc-gpio-overlay.dts
  60 +++ b/arch/arm/boot/dts/overlays/i2c-rtc-gpio-overlay.dts
  61 @@ -121,7 +121,7 @@
  62                         #size-cells = <0>;
  63                         status = "okay";
  64
  65 -                       pcf2127: pcf2127@51 {
  66 +                       pcf2127@51 {
  67                                 compatible = "nxp,pcf2127";
  68                                 reg = <0x51>;
  69                                 status = "okay";
  70 @@ -174,6 +174,36 @@
  71                 };
  72         };
  73
  74 +       fragment@11 {
  75 +               target = <&i2c_gpio>;
  76 +               __dormant__ {
  77 +                       #address-cells = <1>;
  78 +                       #size-cells = <0>;
  79 +                       status = "okay";
  80 +
  81 +                       rv3028: rv3028@52 {
  82 +                               compatible = "microcrystal,rv3028";
  83 +                               reg = <0x52>;
  84 +                               status = "okay";
  85 +                       };
  86 +               };
  87 +       };
  88 +
  89 +       fragment@12 {
  90 +               target = <&i2c_gpio>;
  91 +               __dormant__ {
  92 +                       #address-cells = <1>;
  93 +                       #size-cells = <0>;
  94 +                       status = "okay";
  95 +
  96 +                       pcf2129@51 {
  97 +                               compatible = "nxp,pcf2129";
  98 +                               reg = <0x51>;
  99 +                               status = "okay";
 100 +                       };
 101 +               };
 102 +       };
 103 +
 104         __overrides__ {
 105                 abx80x = <0>,"+1";
 106                 ds1307 = <0>,"+2";
 107 @@ -185,6 +215,8 @@
 108                 pcf8523 = <0>,"+8";
 109                 pcf8563 = <0>,"+9";
 110                 m41t62 = <0>,"+10";
 111 +               rv3028 = <0>,"+11";
 112 +               pcf2129 = <0>,"+12";
 113
 114                 addr = <&abx80x>, "reg:0",
 115                        <&ds1307>, "reg:0",
 116 @@ -192,18 +224,19 @@
 117                        <&ds3231>, "reg:0",
 118                        <&mcp7940x>, "reg:0",
 119                        <&mcp7941x>, "reg:0",
 120 -                      <&pcf2127>, "reg:0",
 121                        <&pcf8523>, "reg:0",
 122                        <&pcf8563>, "reg:0",
 123                        <&m41t62>, "reg:0";
 124
 125                 trickle-diode-type = <&abx80x>,"abracon,tc-diode";
 126                 trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
 127 -                                       <&abx80x>,"abracon,tc-resistor";
 128 +                                       <&abx80x>,"abracon,tc-resistor",
 129 +                                       <&rv3028>,"trickle-resistor-ohms:0";
 130 +               backup-switchover-mode = <&rv3028>,"backup-switchover-mode:0";
 131                 wakeup-source = <&ds1339>,"wakeup-source?",
 132                                 <&ds3231>,"wakeup-source?",
 133                                 <&mcp7940x>,"wakeup-source?",
 134 -                                       <&mcp7941x>,"wakeup-source?";
 135 +                               <&mcp7941x>,"wakeup-source?";
 136                 i2c_gpio_sda = <&i2c_gpio>,"gpios:4";
 137                 i2c_gpio_scl = <&i2c_gpio>,"gpios:16";
 138                 i2c_gpio_delay_us = <&i2c_gpio>,"i2c-gpio,delay-us:0";
 139 --- a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
 140 +++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
 141 @@ -105,7 +105,7 @@
 142                         #size-cells = <0>;
 143                         status = "okay";
 144
 145 -                       pcf2127: pcf2127@51 {
 146 +                       pcf2127@51 {
 147                                 compatible = "nxp,pcf2127";
 148                                 reg = <0x51>;
 149                                 status = "okay";
 150 @@ -173,6 +173,21 @@
 151                 };
 152         };
 153
 154 +       fragment@11 {
 155 +               target = <&i2c_arm>;
 156 +               __dormant__ {
 157 +                       #address-cells = <1>;
 158 +                       #size-cells = <0>;
 159 +                       status = "okay";
 160 +
 161 +                       pcf2129@51 {
 162 +                               compatible = "nxp,pcf2129";
 163 +                               reg = <0x51>;
 164 +                               status = "okay";
 165 +                       };
 166 +               };
 167 +       };
 168 +
 169         __overrides__ {
 170                 abx80x = <0>,"+0";
 171                 ds1307 = <0>,"+1";
 172 @@ -185,6 +200,7 @@
 173                 pcf8563 = <0>,"+8";
 174                 m41t62 = <0>,"+9";
 175                 rv3028 = <0>,"+10";
 176 +               pcf2129 = <0>,"+11";
 177
 178                 addr = <&abx80x>, "reg:0",
 179                        <&ds1307>, "reg:0",
 180 @@ -192,7 +208,6 @@
 181                        <&ds3231>, "reg:0",
 182                        <&mcp7940x>, "reg:0",
 183                        <&mcp7941x>, "reg:0",
 184 -                      <&pcf2127>, "reg:0",
 185                        <&pcf8523>, "reg:0",
 186                        <&pcf8563>, "reg:0",
 187                        <&m41t62>, "reg:0";