On Fri, Oct 07, 2016 at 06:17:27PM +0300, Pantelis Antoniou wrote:
> From: Georgi Vlaev <gvlaev@xxxxxxxxxxx>
>
> Add binding document for the i2c driver of PTXPMB CPLD.
>
> Signed-off-by: Georgi Vlaev <gvlaev@xxxxxxxxxxx>
> [Ported from Juniper kernel]
> Signed-off-by: Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx>
> ---
> .../bindings/i2c/jnx,i2c-mux-ptxpmb-cpld.txt | 50 ++++++++++++++++++++++
> 1 file changed, 50 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/i2c/jnx,i2c-mux-ptxpmb-cpld.txt
>
> diff --git a/Documentation/devicetree/bindings/i2c/jnx,i2c-mux-ptxpmb-cpld.txt b/Documentation/devicetree/bindings/i2c/jnx,i2c-mux-ptxpmb-cpld.txt
> new file mode 100644
> index 0000000..3b201f7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i2c/jnx,i2c-mux-ptxpmb-cpld.txt
> @@ -0,0 +1,50 @@
> +* Juniper PTXPMB CPLD I2C Mux
> +
> +I2C mux on the PTXPMB CPLD on Juniper series of routers.
> +
> +Required properties:
> +
> + - compatible: Must contain one of the following.
> + "jnx,i2c-mux-ptxpmb-cpld", "jnx,i2c-mux-ngpmb-bcpld"
> + - num-enable: Number of muxes to enable.
No. Use status property.
> +
> + The following required properties are defined externally:
> +
> + - Standard I2C mux properties. See i2c-mux.txt in this directory.
> + - I2C child bus nodes. See i2c-mux.txt in this directory.
> +
> +Optional Properties:
> +
> + - num-channels: Number of channels. If not present the default is 8.
What's a channel?
> + - base-bus-num: Base bus number. If not present it is 0.
No. Linuxism and why do you care?
> + - use-force: Use the force method of the controller.
> +
> +
> +Example:
> +
> +cpld-i2c-mux {
mux {
> + compatible = "jnx,i2c-mux-ptxpmb-cpld";
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + i2c-parent = <&i2c1>;
> +
> + num-enable = <1>;
> +
> + i2c@0 {
> + reg = <0>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + /* PMB devices are accessed through FPC */
> +
> + temp-sensor@1a { /* FPC */
> + compatible = "maxim,max6697";
> + reg = <0x1a>;
> + smbus-timeout-disable;
> + resistance-cancellation;
> + alert-mask = <0xff>;
> + over-temperature-mask = <0xff>;
> + };
> + };
> +};
> --
> 1.9.1
>
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