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    Subject[PATCH 02/10] mfd: dt-bindings: Add bindings for the Juniper I2CS MFD
    Date
    From: Georgi Vlaev <gvlaev@juniper.net>

    Add device tree bindings for the Juniper I2CS MFD driver.

    Signed-off-by: Georgi Vlaev <gvlaev@juniper.net>
    [Ported from Juniper kernel]
    Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
    ---
    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
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