target/linux/bcm27xx/patches-5.10/950-0734-overlays-Add-TI-BQ32000-RTC-support.patch

   1 From 1afb520ffaf9667f18336aa4e983a2dd95462f20 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Mon, 16 Aug 2021 11:11:35 +0100
   4 Subject: [PATCH] overlays: Add TI BQ32000 RTC support
   5
   6 See: https://github.com/raspberrypi/linux/issues/4531
   7
   8 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
   9 ---
  10  arch/arm/boot/dts/overlays/README             | 10 ++++++++++
  11  .../arm/boot/dts/overlays/i2c-rtc-common.dtsi | 20 ++++++++++++++++++-
  12  2 files changed, 29 insertions(+), 1 deletion(-)
  13
  14 --- a/arch/arm/boot/dts/overlays/README
  15 +++ b/arch/arm/boot/dts/overlays/README
  16 @@ -1390,6 +1390,8 @@ Params: abx80x                  Select o
  17                                    AB0801, AB0803, AB0804, AB0805,
  18                                    AB1801, AB1803, AB1804, AB1805
  19
  20 +        bq32000                 Select the TI BQ32000 device
  21 +
  22          ds1307                  Select the DS1307 device
  23
  24          ds1339                  Select the DS1339 device
  25 @@ -1434,6 +1436,9 @@ Params: abx80x                  Select o
  26                                  device must be configured to use the specified
  27                                  address.
  28
  29 +        trickle-diode-disable   Do not use the internal trickle charger diode
  30 +                                (BQ32000 only)
  31 +
  32          trickle-diode-type      Diode type for trickle charge - "standard" or
  33                                  "schottky" (ABx80x and RV1805 only)
  34
  35 @@ -1455,6 +1460,8 @@ Params: abx80x                  Select o
  36                                    AB0801, AB0803, AB0804, AB0805,
  37                                    AB1801, AB1803, AB1804, AB1805
  38
  39 +        bq32000                 Select the TI BQ32000 device
  40 +
  41          ds1307                  Select the DS1307 device
  42
  43          ds1339                  Select the DS1339 device
  44 @@ -1495,6 +1502,9 @@ Params: abx80x                  Select o
  45                                  device must be configured to use the specified
  46                                  address.
  47
  48 +        trickle-diode-disable   Do not use the internal trickle charger diode
  49 +                                (BQ32000 only)
  50 +
  51          trickle-diode-type      Diode type for trickle charge - "standard" or
  52                                  "schottky" (ABx80x and RV1805 only)
  53
  54 --- a/arch/arm/boot/dts/overlays/i2c-rtc-common.dtsi
  55 +++ b/arch/arm/boot/dts/overlays/i2c-rtc-common.dtsi
  56 @@ -256,6 +256,21 @@
  57                 };
  58         };
  59
  60 +       fragment@19 {
  61 +               target = <&i2cbus>;
  62 +               __dormant__ {
  63 +                       #address-cells = <1>;
  64 +                       #size-cells = <0>;
  65 +
  66 +                       bq32000: bq32000@68 {
  67 +                               compatible = "ti,bq32000";
  68 +                               trickle-resistor-ohms = <0>;
  69 +                               reg = <0x68>;
  70 +                       };
  71 +               };
  72 +       };
  73 +
  74 +
  75         __overrides__ {
  76                 abx80x = <0>,"+0";
  77                 ds1307 = <0>,"+1";
  78 @@ -276,6 +291,7 @@
  79                 pcf85063 = <0>,"+15";
  80                 pcf85063a = <0>,"+16";
  81                 s35390a = <0>,"+18";
  82 +               bq32000 = <0>,"+19";
  83
  84                 addr = <&abx80x>, "reg:0",
  85                        <&ds1307>, "reg:0",
  86 @@ -288,13 +304,15 @@
  87                        <&m41t62>, "reg:0",
  88                        <&rv1805>, "reg:0",
  89                        <&s35390a>, "reg:0";
  90 +               trickle-diode-disable = <&bq32000>,"trickle-diode-disable?";
  91                 trickle-diode-type = <&abx80x>,"abracon,tc-diode",
  92                                      <&rv1805>,"abracon,tc-diode";
  93                 trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
  94                                         <&ds1340>,"trickle-resistor-ohms:0",
  95                                         <&abx80x>,"abracon,tc-resistor:0",
  96                                         <&rv3028>,"trickle-resistor-ohms:0",
  97 -                                       <&rv1805>,"abracon,tc-resistor:0";
  98 +                                       <&rv1805>,"abracon,tc-resistor:0",
  99 +                                       <&bq32000>,"abracon,tc-resistor:0";
 100                 backup-switchover-mode = <&rv3028>,"backup-switchover-mode:0";
 101                 wakeup-source = <&ds1339>,"wakeup-source?",
 102                                 <&ds3231>,"wakeup-source?",