On Tue, Aug 15, 2017 at 10:04:52PM +0200, Hans de Goede wrote:
> This is board specific info so it should come from board config, such
> as devicetree.
>
> I've chosen to prefix these with "fcs," treating them as fusb302 driver
> specific for now. We may want to revisit this and replace these with
> properties which are part of a (to be written) generic type-c controller
> devicetree binding.
>
> Since this commit adds new dt-properties it also adds devicetree-bindings
> documentation (which so far was absent for the fusb302 driver).
>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Cc: Frank Rowand <frowand.list@xxxxxxxxx>
> Cc: devicetree@xxxxxxxxxxxxxxx
> Cc: "Yueyao (Nathan) Zhu" <yueyao@xxxxxxxxxx>
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> ---
> Changes in v2:
> -Use micro... instead of mili...
> -Add devicetree bindings documentation
> ---
> .../devicetree/bindings/usb/fcs,fusb302.txt | 29 ++++++++++++++++++++++
> drivers/staging/typec/fusb302/TODO | 4 +++
> drivers/staging/typec/fusb302/fusb302.c | 18 +++++++++++++-
> 3 files changed, 50 insertions(+), 1 deletion(-)
> create mode 100644 Documentation/devicetree/bindings/usb/fcs,fusb302.txt
>
> diff --git a/Documentation/devicetree/bindings/usb/fcs,fusb302.txt b/Documentation/devicetree/bindings/usb/fcs,fusb302.txt
> new file mode 100644
> index 0000000..ffc6c87
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/fcs,fusb302.txt
> @@ -0,0 +1,29 @@
> +Fairchild FUSB302 Type-C Port controllers
> +
> +Required properties :
> +- compatible : "fcs,fusb302"
> +- reg : I2C slave address
> +- interrupts : Interrupt specifier
> +
> +Optional properties :
> +- fcs,max-snk-microvolt : Maximum voltage to negotiate when configured as sink
> +- fcs,max-snk-microamp : Maximum current to negotiate when configured as sink
> +- fcs,max-snk-microwatt : Maximum power to negotiate when configured as sink
> + If this is less then max-snk-microvolt *
> + max-snk-microamp then the configured current will
> + be clamped.
> +- fcs,operating-snk-microwatt :
Might as well spell out sink.
Otherwise,
Acked-by: Rob Herring <robh@xxxxxxxxxx>
> + Minimum amount of power accepted from a sink
> + when negotiating
> +
> +Example:
> +
> +fusb302: typec-portc@54 {
> + compatible = "fcs,fusb302";
> + reg = <0x54>;
> + interrupt-parent = <&nmi_intc>;
> + interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
> + fcs,max-snk-microvolt = <12000000>;
> + fcs,max-snk-microamp = <3000000>;
> + fcs,max-snk-microwatt = <36000000>;
> +};
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