On Mon, Aug 7, 2017 at 5:39 AM, Loic Poulain <loic.poulain@xxxxxxxxx> wrote:
> Add binding document for serial bluetooth chips using
> Broadcom protocol.
>
> Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxx>
> ---
> v2: dt-bindings as separate patch
> rebase on upcoming pi3 dts changes
> v3: changes in bcm serdev drivers:
> name refactoring and additional comments
> Add generic host_set_baudrate method
> Use agnostic device_property_read
> .../devicetree/bindings/net/broadcom-bluetooth.txt | 29 ++++++++++++++++++++++
> 1 file changed, 29 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/net/broadcom-bluetooth.txt
>
> diff --git a/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt b/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt
> new file mode 100644
> index 0000000..c51ea1b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt
> @@ -0,0 +1,29 @@
> +Broadcom Bluetooth Chips
> +---------------------
> +
> +This documents the binding structure and common properties for serial
> +attached Broadcom devices.
> +
> +Serial attached Broadcom devices shall be a child node of the host UART
> +device the slave device is attached to.
> +
> +Required properties:
> +
> + - compatible: should contain one of the following:
> + * "brcm,bcm43438-bt"
> +
> +Optional properties:
Most Broadcom devices have a couple of GPIOs needing control. Maybe
they are tied off active on RPi3, but you should document them here
even if the driver doesn't yet need them. I think they are the same as
the Nokia BT IIRC. Same goes for any input clocks.
> +
> + - max-speed: see Documentation/devicetree/bindings/serial/slave-device.txt
> +
> +Example:
> +
> +&uart2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart2_pins>;
> +
> + bluetooth {
> + compatible = "brcm,bcm43438-bt";
> + max-speed = <921600>;
> + };
> +};
> --
> 1.9.1
>
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