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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/device-tree-bindings/leds/leds-bcm6328.txt | 106 | ||||
| -rw-r--r-- | doc/device-tree-bindings/leds/leds-bcm6358.txt | 141 |
2 files changed, 247 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/leds/leds-bcm6328.txt b/doc/device-tree-bindings/leds/leds-bcm6328.txt new file mode 100644 index 0000000..7f5597b --- /dev/null +++ b/doc/device-tree-bindings/leds/leds-bcm6328.txt @@ -0,0 +1,106 @@ +LEDs connected to Broadcom BCM6328 controller + +This controller is present on BCM6318, BCM6328, BCM6362 and BCM63268. +In these SoCs it's possible to control LEDs both as GPIOs or by hardware. +However, on some devices there are Serial LEDs (LEDs connected to a 74x164 +controller), which can either be controlled by software (exporting the 74x164 +as spi-gpio. See Documentation/devicetree/bindings/gpio/gpio-74x164.txt), or +by hardware using this driver. +Some of these Serial LEDs are hardware controlled (e.g. ethernet LEDs) and +exporting the 74x164 as spi-gpio prevents those LEDs to be hardware +controlled, so the only chance to keep them working is by using this driver. + +Required properties: + - compatible : should be "brcm,bcm6328-leds". + - #address-cells : must be 1. + - #size-cells : must be 0. + - reg : BCM6328 LED controller address and size. + +Optional properties: + - brcm,serial-leds : Boolean, enables Serial LEDs. + Default : false + - brcm,serial-mux : Boolean, enables Serial LEDs multiplexing. + Default : false + - brcm,serial-clk-low : Boolean, makes clock signal active low. + Default : false + - brcm,serial-dat-low : Boolean, makes data signal active low. + Default : false + - brcm,serial-shift-inv : Boolean, inverts Serial LEDs shift direction. + Default : false + +Each LED is represented as a sub-node of the brcm,bcm6328-leds device. + +LED sub-node required properties: + - reg : LED pin number (only LEDs 0 to 23 are valid). + +LED sub-node optional properties: + - label : see Documentation/devicetree/bindings/leds/common.txt + - active-low : Boolean, makes LED active low. + Default : false + +Examples: +Scenario 1 : BCM6328 with 4 GPIO LEDs + leds0: led-controller@10000800 { + compatible = "brcm,bcm6328-leds"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x10000800 0x24>; + + alarm_red@2 { + reg = <2>; + active-low; + label = "red:alarm"; + }; + inet_green@3 { + reg = <3>; + active-low; + label = "green:inet"; + }; + power_green@4 { + reg = <4>; + active-low; + label = "green:power"; + }; + }; + +Scenario 2 : BCM63268 with Serial LEDs + leds0: led-controller@10001900 { + compatible = "brcm,bcm6328-leds"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x10001900 0x24>; + brcm,serial-leds; + brcm,serial-dat-low; + brcm,serial-shift-inv; + + inet_red@2 { + reg = <2>; + active-low; + label = "red:inet"; + }; + dsl_green@3 { + reg = <3>; + active-low; + label = "green:dsl"; + }; + usb_green@4 { + reg = <4>; + active-low; + label = "green:usb"; + }; + wps_green@7 { + reg = <7>; + active-low; + label = "green:wps"; + }; + inet_green@8 { + reg = <8>; + active-low; + label = "green:inet"; + }; + power_green@20 { + reg = <20>; + active-low; + label = "green:power"; + }; + }; diff --git a/doc/device-tree-bindings/leds/leds-bcm6358.txt b/doc/device-tree-bindings/leds/leds-bcm6358.txt new file mode 100644 index 0000000..e394d9e --- /dev/null +++ b/doc/device-tree-bindings/leds/leds-bcm6358.txt @@ -0,0 +1,141 @@ +LEDs connected to Broadcom BCM6358 controller + +This controller is present on BCM6358 and BCM6368. +In these SoCs there are Serial LEDs (LEDs connected to a 74x164 controller), +which can either be controlled by software (exporting the 74x164 as spi-gpio. +See Documentation/devicetree/bindings/gpio/gpio-74x164.txt), or +by hardware using this driver. + +Required properties: + - compatible : should be "brcm,bcm6358-leds". + - #address-cells : must be 1. + - #size-cells : must be 0. + - reg : BCM6358 LED controller address and size. + +Optional properties: + - brcm,clk-div : SCK signal divider. Possible values are 1, 2, 4 and 8. + Default : 1 + - brcm,clk-dat-low : Boolean, makes clock and data signals active low. + Default : false + +Each LED is represented as a sub-node of the brcm,bcm6358-leds device. + +LED sub-node required properties: + - reg : LED pin number (only LEDs 0 to 31 are valid). + +LED sub-node optional properties: + - label : see Documentation/devicetree/bindings/leds/common.txt + - active-low : Boolean, makes LED active low. + Default : false + +Examples: +Scenario 1 : BCM6358 + leds0: led-controller@fffe00d0 { + compatible = "brcm,bcm6358-leds"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0xfffe00d0 0x8>; + + alarm_white { + reg = <0>; + active-low; + label = "white:alarm"; + }; + tv_white { + reg = <2>; + active-low; + label = "white:tv"; + }; + tel_white { + reg = <3>; + active-low; + label = "white:tel"; + }; + adsl_white { + reg = <4>; + active-low; + label = "white:adsl"; + }; + }; + +Scenario 2 : BCM6368 + leds0: led-controller@100000d0 { + compatible = "brcm,bcm6358-leds"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x100000d0 0x8>; + brcm,pol-low; + brcm,clk-div = <4>; + + power_red { + reg = <0>; + active-low; + label = "red:power"; + }; + power_green { + reg = <1>; + active-low; + label = "green:power"; + default-state = "on"; + }; + power_blue { + reg = <2>; + label = "blue:power"; + }; + broadband_red { + reg = <3>; + active-low; + label = "red:broadband"; + }; + broadband_green { + reg = <4>; + label = "green:broadband"; + }; + broadband_blue { + reg = <5>; + active-low; + label = "blue:broadband"; + }; + wireless_red { + reg = <6>; + active-low; + label = "red:wireless"; + }; + wireless_green { + reg = <7>; + active-low; + label = "green:wireless"; + }; + wireless_blue { + reg = <8>; + label = "blue:wireless"; + }; + phone_red { + reg = <9>; + active-low; + label = "red:phone"; + }; + phone_green { + reg = <10>; + active-low; + label = "green:phone"; + }; + phone_blue { + reg = <11>; + label = "blue:phone"; + }; + upgrading_red { + reg = <12>; + active-low; + label = "red:upgrading"; + }; + upgrading_green { + reg = <13>; + active-low; + label = "green:upgrading"; + }; + upgrading_blue { + reg = <14>; + label = "blue:upgrading"; + }; + }; |