doc/device-tree-bindings/leds/leds-bcm6358.txt

   1 LEDs connected to Broadcom BCM6358 controller
   2
   3 This controller is present on BCM6358 and BCM6368.
   4 In these SoCs there are Serial LEDs (LEDs connected to a 74x164 controller),
   5 which can either be controlled by software (exporting the 74x164 as spi-gpio.
   6 See Documentation/devicetree/bindings/gpio/gpio-74x164.txt), or
   7 by hardware using this driver.
   8
   9 Required properties:
  10   - compatible : should be "brcm,bcm6358-leds".
  11   - #address-cells : must be 1.
  12   - #size-cells : must be 0.
  13   - reg : BCM6358 LED controller address and size.
  14
  15 Optional properties:
  16   - brcm,clk-div : SCK signal divider. Possible values are 1, 2, 4 and 8.
  17     Default : 1
  18   - brcm,clk-dat-low : Boolean, makes clock and data signals active low.
  19     Default : false
  20
  21 Each LED is represented as a sub-node of the brcm,bcm6358-leds device.
  22
  23 LED sub-node required properties:
  24   - reg : LED pin number (only LEDs 0 to 31 are valid).
  25
  26 LED sub-node optional properties:
  27   - label : see Documentation/devicetree/bindings/leds/common.txt
  28   - active-low : Boolean, makes LED active low.
  29     Default : false
  30
  31 Examples:
  32 Scenario 1 : BCM6358
  33         leds0: led-controller@fffe00d0 {
  34                 compatible = "brcm,bcm6358-leds";
  35                 #address-cells = <1>;
  36                 #size-cells = <0>;
  37                 reg = <0xfffe00d0 0x8>;
  38
  39                 alarm_white {
  40                         reg = <0>;
  41                         active-low;
  42                         label = "white:alarm";
  43                 };
  44                 tv_white {
  45                         reg = <2>;
  46                         active-low;
  47                         label = "white:tv";
  48                 };
  49                 tel_white {
  50                         reg = <3>;
  51                         active-low;
  52                         label = "white:tel";
  53                 };
  54                 adsl_white {
  55                         reg = <4>;
  56                         active-low;
  57                         label = "white:adsl";
  58                 };
  59         };
  60
  61 Scenario 2 : BCM6368
  62         leds0: led-controller@100000d0 {
  63                 compatible = "brcm,bcm6358-leds";
  64                 #address-cells = <1>;
  65                 #size-cells = <0>;
  66                 reg = <0x100000d0 0x8>;
  67                 brcm,pol-low;
  68                 brcm,clk-div = <4>;
  69
  70                 power_red {
  71                         reg = <0>;
  72                         active-low;
  73                         label = "red:power";
  74                 };
  75                 power_green {
  76                         reg = <1>;
  77                         active-low;
  78                         label = "green:power";
  79                         default-state = "on";
  80                 };
  81                 power_blue {
  82                         reg = <2>;
  83                         label = "blue:power";
  84                 };
  85                 broadband_red {
  86                         reg = <3>;
  87                         active-low;
  88                         label = "red:broadband";
  89                 };
  90                 broadband_green {
  91                         reg = <4>;
  92                         label = "green:broadband";
  93                 };
  94                 broadband_blue {
  95                         reg = <5>;
  96                         active-low;
  97                         label = "blue:broadband";
  98                 };
  99                 wireless_red {
 100                         reg = <6>;
 101                         active-low;
 102                         label = "red:wireless";
 103                 };
 104                 wireless_green {
 105                         reg = <7>;
 106                         active-low;
 107                         label = "green:wireless";
 108                 };
 109                 wireless_blue {
 110                         reg = <8>;
 111                         label = "blue:wireless";
 112                 };
 113                 phone_red {
 114                         reg = <9>;
 115                         active-low;
 116                         label = "red:phone";
 117                 };
 118                 phone_green {
 119                         reg = <10>;
 120                         active-low;
 121                         label = "green:phone";
 122                 };
 123                 phone_blue {
 124                         reg = <11>;
 125                         label = "blue:phone";
 126                 };
 127                 upgrading_red {
 128                         reg = <12>;
 129                         active-low;
 130                         label = "red:upgrading";
 131                 };
 132                 upgrading_green {
 133                         reg = <13>;
 134                         active-low;
 135                         label = "green:upgrading";
 136                 };
 137                 upgrading_blue {
 138                         reg = <14>;
 139                         label = "blue:upgrading";
 140                 };
 141         };