arch/arm/boot/dts/overlays/balena-fin-overlay.dts

   1 /dts-v1/;
   2 /plugin/;
   3
   4 #include <dt-bindings/gpio/gpio.h>
   5
   6 /{
   7         compatible = "brcm,bcm2835";
   8
   9         fragment@0 {
  10                 target = <&mmcnr>;
  11                 __overlay__ {
  12                         pinctrl-names = "default";
  13                         pinctrl-0 = <&sdio_pins>;
  14                         bus-width = <4>;
  15                         brcm,overclock-50 = <35>;
  16                         status = "okay";
  17                 };
  18         };
  19
  20         fragment@1 {
  21                 target = <&gpio>;
  22                 __overlay__ {
  23                         sdio_pins: sdio_ovl_pins {
  24                                 brcm,pins = <34 35 36 37 38 39>;
  25                                 brcm,function = <7>; /* ALT3 = SD1 */
  26                                 brcm,pull = <0 2 2 2 2 2>;
  27                         };
  28
  29                         power_ctrl_pins: power_ctrl_pins {
  30                                 brcm,pins = <40>;
  31                                 brcm,function = <1>; // out
  32                         };
  33                 };
  34         };
  35
  36         fragment@2 {
  37                 target-path = "/";
  38                 __overlay__ {
  39                         // We should switch to mmc-pwrseq-sd8787 after making it
  40                         // compatible with sd8887
  41                         // Currently that module requires two GPIOs to function since it
  42                         // targets a slightly different chip
  43                         power_ctrl: power_ctrl {
  44                                 compatible = "gpio-poweroff";
  45                                 gpios = <&gpio 40 1>;
  46                                 force;
  47                                 pinctrl-names = "default";
  48                                 pinctrl-0 = <&power_ctrl_pins>;
  49                         };
  50
  51                         i2c_soft: i2c@0 {
  52                                 compatible = "i2c-gpio";
  53                                 gpios = <&gpio 43 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN) /* sda */
  54                                          &gpio 42 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN) /* scl */>;
  55                                 i2c-gpio,delay-us = <5>;
  56                                 i2c-gpio,scl-open-drain;
  57                                 i2c-gpio,sda-open-drain;
  58                                 #address-cells = <1>;
  59                                 #size-cells = <0>;
  60                         };
  61
  62                         sd8xxx-wlan {
  63                                 drvdbg = <0x6>;
  64                                 drv_mode = <0x1>;
  65                                 cfg80211_wext = <0xf>;
  66                                 sta_name = "wlan";
  67                                 wfd_name = "p2p";
  68                                 cal_data_cfg = "none";
  69                         };
  70                 };
  71         };
  72
  73         fragment@3 {
  74                 target = <&i2c_soft>;
  75                 __overlay__ {
  76                         #address-cells = <1>;
  77                         #size-cells = <0>;
  78                         status = "okay";
  79
  80                         gpio_expander: gpio_expander@20 {
  81                                 compatible = "nxp,pca9554";
  82                                 gpio-controller;
  83                                 #gpio-cells = <2>;
  84                                 reg = <0x20>;
  85                                 status = "okay";
  86                         };
  87
  88                         // rtc clock
  89                         ds1307: ds1307@68 {
  90                                 compatible = "dallas,ds1307";
  91                                 reg = <0x68>;
  92                                 status = "okay";
  93                         };
  94
  95                         // RGB LEDs (>= v1.1.0)
  96                         pca9633: pca9633@62 {
  97                                 compatible = "nxp,pca9633";
  98                                 reg = <0x62>;
  99                                 #address-cells = <1>;
 100                                 #size-cells = <0>;
 101
 102                                 red@0 {
 103                                         label = "red";
 104                                         reg = <0>;
 105                                         linux,default-trigger = "none";
 106                                 };
 107                                 green@1 {
 108                                         label = "green";
 109                                         reg = <1>;
 110                                         linux,default-trigger = "none";
 111                                 };
 112                                 blue@2 {
 113                                         label = "blue";
 114                                         reg = <2>;
 115                                         linux,default-trigger = "none";
 116                                 };
 117                                 unused@3 {
 118                                         label = "unused";
 119                                         reg = <3>;
 120                                         linux,default-trigger = "none";
 121                                 };
 122                         };
 123                 };
 124         };
 125 };