leds-bcm6358.txt

  1LEDs connected to Broadcom BCM6358 controller
  2
  3This controller is present on BCM6358 and BCM6368.
  4In these SoCs there are Serial LEDs (LEDs connected to a 74x164 controller),
  5which can either be controlled by software (exporting the 74x164 as spi-gpio.
  6See Documentation/devicetree/bindings/gpio/fairchild,74hc595.yaml), or
  7by hardware using this driver.
  8
  9Required 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
 15Optional 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
 21Each LED is represented as a sub-node of the brcm,bcm6358-leds device.
 22
 23LED sub-node required properties:
 24  - reg : LED pin number (only LEDs 0 to 31 are valid).
 25
 26LED sub-node optional properties:
 27  - label : see Documentation/devicetree/bindings/leds/common.txt
 28  - default-state : see
 29    Documentation/devicetree/bindings/leds/common.txt
 30  - linux,default-trigger : see
 31    Documentation/devicetree/bindings/leds/common.txt
 32
 33Examples:
 34Scenario 1 : BCM6358
 35	leds0: led-controller@fffe00d0 {
 36		compatible = "brcm,bcm6358-leds";
 37		#address-cells = <1>;
 38		#size-cells = <0>;
 39		reg = <0xfffe00d0 0x8>;
 40
 41		alarm_white {
 42			reg = <0>;
 43			active-low;
 44			label = "white:alarm";
 45		};
 46		tv_white {
 47			reg = <2>;
 48			active-low;
 49			label = "white:tv";
 50		};
 51		tel_white {
 52			reg = <3>;
 53			active-low;
 54			label = "white:tel";
 55		};
 56		adsl_white {
 57			reg = <4>;
 58			active-low;
 59			label = "white:adsl";
 60		};
 61	};
 62
 63Scenario 2 : BCM6368
 64	leds0: led-controller@100000d0 {
 65		compatible = "brcm,bcm6358-leds";
 66		#address-cells = <1>;
 67		#size-cells = <0>;
 68		reg = <0x100000d0 0x8>;
 69		brcm,pol-low;
 70		brcm,clk-div = <4>;
 71
 72		power_red {
 73			reg = <0>;
 74			active-low;
 75			label = "red:power";
 76		};
 77		power_green {
 78			reg = <1>;
 79			active-low;
 80			label = "green:power";
 81			default-state = "on";
 82		};
 83		power_blue {
 84			reg = <2>;
 85			label = "blue:power";
 86		};
 87		broadband_red {
 88			reg = <3>;
 89			active-low;
 90			label = "red:broadband";
 91		};
 92		broadband_green {
 93			reg = <4>;
 94			label = "green:broadband";
 95		};
 96		broadband_blue {
 97			reg = <5>;
 98			active-low;
 99			label = "blue:broadband";
100		};
101		wireless_red {
102			reg = <6>;
103			active-low;
104			label = "red:wireless";
105		};
106		wireless_green {
107			reg = <7>;
108			active-low;
109			label = "green:wireless";
110		};
111		wireless_blue {
112			reg = <8>;
113			label = "blue:wireless";
114		};
115		phone_red {
116			reg = <9>;
117			active-low;
118			label = "red:phone";
119		};
120		phone_green {
121			reg = <10>;
122			active-low;
123			label = "green:phone";
124		};
125		phone_blue {
126			reg = <11>;
127			label = "blue:phone";
128		};
129		upgrading_red {
130			reg = <12>;
131			active-low;
132			label = "red:upgrading";
133		};
134		upgrading_green {
135			reg = <13>;
136			active-low;
137			label = "green:upgrading";
138		};
139		upgrading_blue {
140			reg = <14>;
141			label = "blue:upgrading";
142		};
143	};