target/linux/brcm2708/patches-4.14/950-0290-overlays-Add-support-for-Balena-Fin-board.patch

   1 From 09e843542826ad1241d77d5ef9abb2bce21a0984 Mon Sep 17 00:00:00 2001
   2 From: Florin Sarbu <florin@resin.io>
   3 Date: Mon, 30 Apr 2018 09:11:52 +0200
   4 Subject: [PATCH 290/454] overlays: Add support for Balena Fin board
   5
   6 Signed-off-by: Florin Sarbu <florin@resin.io>
   7 ---
   8  arch/arm/boot/dts/overlays/Makefile           |  1 +
   9  arch/arm/boot/dts/overlays/README             |  7 ++
  10  .../boot/dts/overlays/balena-fin-overlay.dts  | 79 +++++++++++++++++++
  11  3 files changed, 87 insertions(+)
  12  create mode 100644 arch/arm/boot/dts/overlays/balena-fin-overlay.dts
  13
  14 --- a/arch/arm/boot/dts/overlays/Makefile
  15 +++ b/arch/arm/boot/dts/overlays/Makefile
  16 @@ -17,6 +17,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  17         audioinjector-addons.dtbo \
  18         audioinjector-wm8731-audio.dtbo \
  19         audremap.dtbo \
  20 +       balena-fin.dtbo \
  21         bmp085_i2c-sensor.dtbo \
  22         dht11.dtbo \
  23         dionaudio-loco.dtbo \
  24 --- a/arch/arm/boot/dts/overlays/README
  25 +++ b/arch/arm/boot/dts/overlays/README
  26 @@ -404,6 +404,13 @@ Params: swap_lr                 Reverse
  27                                  (default off)
  28
  29
  30 +Name:   balena-fin
  31 +Info:   Overlay that enables WiFi, Bluetooth and the GPIO expander on the
  32 +        Balena Fin board.
  33 +Load:   dtoverlay=balena-fin
  34 +Params: <None>
  35 +
  36 +
  37  Name:   bmp085_i2c-sensor
  38  Info:   This overlay is now deprecated - see i2c-sensor
  39  Load:   dtoverlay=bmp085_i2c-sensor
  40 --- /dev/null
  41 +++ b/arch/arm/boot/dts/overlays/balena-fin-overlay.dts
  42 @@ -0,0 +1,79 @@
  43 +/dts-v1/;
  44 +/plugin/;
  45 +
  46 +/{
  47 +       compatible = "brcm,bcm2708";
  48 +
  49 +       fragment@0 {
  50 +               target = <&mmc>;
  51 +               sdio_wifi: __overlay__ {
  52 +                       pinctrl-names = "default";
  53 +                       pinctrl-0 = <&sdio_pins>;
  54 +                       bus-width = <4>;
  55 +                       brcm,overclock-50 = <35>;
  56 +                       status = "okay";
  57 +               };
  58 +       };
  59 +
  60 +       fragment@1 {
  61 +               target = <&gpio>;
  62 +               __overlay__ {
  63 +                       sdio_pins: sdio_pins {
  64 +                               brcm,pins = <34 35 36 37 38 39>;
  65 +                               brcm,function = <7>; /* ALT3 = SD1 */
  66 +                               brcm,pull = <0 2 2 2 2 2>;
  67 +                       };
  68 +
  69 +                       power_ctrl_pins: power_ctrl_pins {
  70 +                               brcm,pins = <40>;
  71 +                               brcm,function = <1>; // out
  72 +                       };
  73 +               };
  74 +       };
  75 +
  76 +       fragment@2 {
  77 +               target-path = "/";
  78 +               __overlay__ {
  79 +                       // We should investigate how to switch to mmc-pwrseq-sd8787
  80 +                       // Currently that module requires two GPIOs to function since it
  81 +                       // targets a slightly different chip
  82 +                       power_ctrl: power_ctrl {
  83 +                               compatible = "gpio-poweroff";
  84 +                               gpios = <&gpio 40 1>;
  85 +                               force;
  86 +                       };
  87 +
  88 +                       i2c_soft: i2c@0 {
  89 +                               compatible = "i2c-gpio";
  90 +                               gpios = <&gpio 43 0 /* sda */ &gpio 42 0 /* scl */>;
  91 +                               i2c-gpio,delay-us = <2>; /* ~100 kHz */
  92 +                               #address-cells = <1>;
  93 +                               #size-cells = <0>;
  94 +                       };
  95 +               };
  96 +       };
  97 +
  98 +       fragment@3 {
  99 +               target = <&i2c_soft>;
 100 +               __overlay__ {
 101 +                       #address-cells = <1>;
 102 +                       #size-cells = <0>;
 103 +                       status = "okay";
 104 +
 105 +                       gpio_expander: gpio_expander@20 {
 106 +                               compatible = "nxp,pca9554";
 107 +                               gpio-controller;
 108 +                               #gpio-cells = <2>;
 109 +                               reg = <0x20>;
 110 +                               status = "okay";
 111 +                       };
 112 +
 113 +                       // rtc clock
 114 +                       ds1307: ds1307@68 {
 115 +                               compatible = "maxim,ds1307";
 116 +                               reg = <0x68>;
 117 +                               status = "okay";
 118 +                       };
 119 +               };
 120 +       };
 121 +};