arch/arm/boot/dts/overlays/i2c-mux-overlay.dts

   1 // Umbrella I2C Mux overlay
   2
   3 /dts-v1/;
   4 /plugin/;
   5
   6 /{
   7         compatible = "brcm,bcm2708";
   8
   9         fragment@0 {
  10                 target = <&i2c_arm>;
  11                 __dormant__ {
  12                         #address-cells = <1>;
  13                         #size-cells = <0>;
  14                         status = "okay";
  15
  16                         pca9542: mux@70 {
  17                                 compatible = "nxp,pca9542";
  18                                 reg = <0x70>;
  19                                 #address-cells = <1>;
  20                                 #size-cells = <0>;
  21
  22                                 i2c@0 {
  23                                         #address-cells = <1>;
  24                                         #size-cells = <0>;
  25                                         reg = <0>;
  26                                 };
  27                                 i2c@1 {
  28                                         #address-cells = <1>;
  29                                         #size-cells = <0>;
  30                                         reg = <1>;
  31                                 };
  32                         };
  33                 };
  34         };
  35
  36         fragment@1 {
  37                 target = <&i2c_arm>;
  38                 __dormant__ {
  39                         #address-cells = <1>;
  40                         #size-cells = <0>;
  41                         status = "okay";
  42
  43                         pca9545: mux@70 {
  44                                 compatible = "nxp,pca9545";
  45                                 reg = <0x70>;
  46                                 #address-cells = <1>;
  47                                 #size-cells = <0>;
  48
  49                                 i2c@0 {
  50                                         #address-cells = <1>;
  51                                         #size-cells = <0>;
  52                                         reg = <0>;
  53                                 };
  54                                 i2c@1 {
  55                                         #address-cells = <1>;
  56                                         #size-cells = <0>;
  57                                         reg = <1>;
  58                                 };
  59                                 i2c@2 {
  60                                         #address-cells = <1>;
  61                                         #size-cells = <0>;
  62                                         reg = <2>;
  63                                 };
  64                                 i2c@3 {
  65                                         #address-cells = <1>;
  66                                         #size-cells = <0>;
  67                                         reg = <3>;
  68                                 };
  69                         };
  70                 };
  71         };
  72
  73         fragment@2 {
  74                 target = <&i2c_arm>;
  75                 __dormant__ {
  76                         #address-cells = <1>;
  77                         #size-cells = <0>;
  78                         status = "okay";
  79
  80                         pca9548: mux@70 {
  81                                 compatible = "nxp,pca9548";
  82                                 reg = <0x70>;
  83                                 #address-cells = <1>;
  84                                 #size-cells = <0>;
  85
  86                                 i2c@0 {
  87                                         #address-cells = <1>;
  88                                         #size-cells = <0>;
  89                                         reg = <0>;
  90                                 };
  91                                 i2c@1 {
  92                                         #address-cells = <1>;
  93                                         #size-cells = <0>;
  94                                         reg = <1>;
  95                                 };
  96                                 i2c@2 {
  97                                         #address-cells = <1>;
  98                                         #size-cells = <0>;
  99                                         reg = <2>;
 100                                 };
 101                                 i2c@3 {
 102                                         #address-cells = <1>;
 103                                         #size-cells = <0>;
 104                                         reg = <3>;
 105                                 };
 106                                 i2c@4 {
 107                                         #address-cells = <1>;
 108                                         #size-cells = <0>;
 109                                         reg = <4>;
 110                                 };
 111                                 i2c@5 {
 112                                         #address-cells = <1>;
 113                                         #size-cells = <0>;
 114                                         reg = <5>;
 115                                 };
 116                                 i2c@6 {
 117                                         #address-cells = <1>;
 118                                         #size-cells = <0>;
 119                                         reg = <6>;
 120                                 };
 121                                 i2c@7 {
 122                                         #address-cells = <1>;
 123                                         #size-cells = <0>;
 124                                         reg = <7>;
 125                                 };
 126                         };
 127                 };
 128         };
 129
 130         __overrides__ {
 131                 pca9542 = <0>, "+0";
 132                 pca9545 = <0>, "+1";
 133                 pca9548 = <0>, "+2";
 134
 135                 addr =  <&pca9542>,"reg:0",
 136                         <&pca9545>,"reg:0",
 137                         <&pca9548>,"reg:0";
 138         };
 139 };