arch/arm/boot/dts/overlays/ads1115-overlay.dts

   1 /*
   2  * TI ADS1115 multi-channel ADC overlay
   3  */
   4
   5 /dts-v1/;
   6 /plugin/;
   7
   8 / {
   9         compatible = "brcm,bcm2835";
  10
  11         fragment@0 {
  12                 target = <&i2c_arm>;
  13                 __overlay__ {
  14                         #address-cells = <1>;
  15                         #size-cells = <0>;
  16                         status = "okay";
  17
  18                         ads1115: ads1115@48 {
  19                                 compatible = "ti,ads1115";
  20                                 status = "okay";
  21                                 #address-cells = <1>;
  22                                 #size-cells = <0>;
  23                                 reg = <0x48>;
  24                         };
  25                 };
  26         };
  27
  28         fragment@1 {
  29                 target = <&ads1115>;
  30                 __dormant__ {
  31                         #address-cells = <1>;
  32                         #size-cells = <0>;
  33
  34                         channel_a: channel_a {
  35                                 reg = <4>;
  36                                 ti,gain = <1>;
  37                                 ti,datarate = <7>;
  38                         };
  39                 };
  40         };
  41
  42         fragment@2 {
  43                 target = <&ads1115>;
  44                 __dormant__ {
  45                         #address-cells = <1>;
  46                         #size-cells = <0>;
  47
  48                         channel_b: channel_b {
  49                                 reg = <5>;
  50                                 ti,gain = <1>;
  51                                 ti,datarate = <7>;
  52                         };
  53                 };
  54         };
  55
  56         fragment@3 {
  57                 target = <&ads1115>;
  58                 __dormant__ {
  59                         #address-cells = <1>;
  60                         #size-cells = <0>;
  61
  62                         channel_c: channel_c {
  63                                 reg = <6>;
  64                                 ti,gain = <1>;
  65                                 ti,datarate = <7>;
  66                         };
  67                 };
  68         };
  69
  70         fragment@4 {
  71                 target = <&ads1115>;
  72                 __dormant__ {
  73                         #address-cells = <1>;
  74                         #size-cells = <0>;
  75
  76                         channel_d: channel_d {
  77                                 reg = <7>;
  78                                 ti,gain = <1>;
  79                                 ti,datarate = <7>;
  80                         };
  81                 };
  82         };
  83
  84         __overrides__ {
  85                 addr =            <&ads1115>,"reg:0";
  86                 cha_enable =      <0>,"=1";
  87                 cha_cfg =         <&channel_a>,"reg:0";
  88                 cha_gain =        <&channel_a>,"ti,gain:0";
  89                 cha_datarate =    <&channel_a>,"ti,datarate:0";
  90                 chb_enable =      <0>,"=2";
  91                 chb_cfg =         <&channel_b>,"reg:0";
  92                 chb_gain =        <&channel_b>,"ti,gain:0";
  93                 chb_datarate =    <&channel_b>,"ti,datarate:0";
  94                 chc_enable =      <0>,"=3";
  95                 chc_cfg =         <&channel_c>,"reg:0";
  96                 chc_gain =        <&channel_c>,"ti,gain:0";
  97                 chc_datarate =    <&channel_c>,"ti,datarate:0";
  98                 chd_enable =      <0>,"=4";
  99                 chd_cfg =         <&channel_d>,"reg:0";
 100                 chd_gain =        <&channel_d>,"ti,gain:0";
 101                 chd_datarate =    <&channel_d>,"ti,datarate:0";
 102         };
 103 };