From: Georgi Vlaev <[email protected]> Add device tree bindings for the Juniper I2CS MFD driver.
Signed-off-by: Georgi Vlaev <[email protected]> [Ported from Juniper kernel] Signed-off-by: Pantelis Antoniou <[email protected]> --- Documentation/devicetree/bindings/mfd/jnx-i2cs.txt | 68 ++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/jnx-i2cs.txt diff --git a/Documentation/devicetree/bindings/mfd/jnx-i2cs.txt b/Documentation/devicetree/bindings/mfd/jnx-i2cs.txt new file mode 100644 index 0000000..0ec103b --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/jnx-i2cs.txt @@ -0,0 +1,68 @@ +Device-Tree bindings for Juniper Networks I2CS FPGA MFD + +Required properties: +- compatible - Must be one of: + "jnx,i2cs-rcb" (Routing Engine or Control Board FRUs) + "jnx,i2cs-fpc" (Flexible Port Concentrator FRUs) + "jnx,i2cs-sib" (Switching Interface Board FRUs) + "jnx,i2cs-fan" (Fan Tray FRUs) + +Optional properties: + +Depending on the FRU, the I2CS MFD has varied group of sub-devices: + +Device Description +------ ----------- +jnx,i2cs-gpio : Virtual gpio mapping driver +jnx,i2cs-fan-hwmon : hwmon driver for fan trays +jnx,i2c-mux-i2cs : I2C Mux driver for FPC FRUs +jnx,leds-i2cs : Led driver + +All these optional nodes are described in their respective binding +documents. + +Example node: + +i2cs@54 { + compatible = "jnx,i2cs-fpc"; + reg = <0x54>; + #address-cells = <0>; + #size-cells = <0>; + + fpc2_mux { + compatible = "jnx,i2c-mux-i2cs"; + #address-cells = <1>; + #size-cells = <0>; + + fpc2i2c0: i2c@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + }; + }; + + fpc2_gpiomap: gpio-jnx-i2cs { + compatible = "jnx,gpio-i2cs"; + reg = <0x54>; + #gpio-cells = <2>; + gpio-controller; + interrupt-controller; + + /* + * Map bits [0-3] of reg 0x21 as gpio inputs, bits [4-7] + * as gpio outputs + */ + i2c-gpio-map = <0x21 0x0f>; + }; + + leds-jnx-i2cs { + compatible = "jnx,leds-i2cs"; + #address-cells = <1>; + #size-cells = <0>; + + sib8-active { + reg = <0>; + linux,default-trigger = "sib8-active"; + }; + }; +}; -- 1.9.1
