On Fri, May 22, 2015 at 3:10 PM, Ilya Faenson <ifaenson@xxxxxxxxxxxx> wrote:
> Device Tree bindings to configure the Broadcom Bluetooth UART device.
>
> Signed-off-by: Ilya Faenson <ifaenson@xxxxxxxxxxxx>
> ---
> .../devicetree/bindings/net/bluetooth/btbcm.txt | 82 ++++++++++++++++++++++
> 1 file changed, 82 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/net/bluetooth/btbcm.txt
>
> diff --git a/Documentation/devicetree/bindings/net/bluetooth/btbcm.txt b/Documentation/devicetree/bindings/net/bluetooth/btbcm.txt
> new file mode 100644
> index 0000000..968421b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/bluetooth/btbcm.txt
> @@ -0,0 +1,82 @@
> +btbcm
> +------
> +
> +Required properties:
> +
> + - compatible : must be "brcm,brcm-bt-uart".
> + - tty : tty device connected to this Bluetooth device.
Neil Brown has been working on generic bindings for tty/UART slaves
which should be used here.
> +
> +Optional properties:
> +
> + - bt-host-wake-gpios : bt-host-wake input GPIO to be used as an interrupt.
> +
> + - bt-wake-gpios : bt-wake output GPIO to be used to suspend / resume device.
> +
> + - bt-reg-on-gpios : reg-on output GPIO to be used to power device on/off.
> +
> + - baud-rate-before-config-download : initial Bluetooth device baud rate.
> + Default: 3000000.
What's the baudrate after download? Why not just use standard
"baud-rate" if you only specify one rate?
> +
> + - manual-fc : flow control UART in suspend / resume scenarios.
> + Default: 0.
> +
> + - configure-sleep : configure suspend / resume flag.
> + Default: false.
> +
> + - configure-audio : configure platform PCM SCO flag.
> + Default: false.
> +
> + - PCMClockMode : PCM clock mode. 0-slave, 1-master.
> + Default: 0.
> +
> + - PCMFillMethod : PCM fill method. 0 to 3.
> + Default: 2.
> +
> + - PCMFillNum : PCM number of fill bits. 0 to 3.
> + Default: 0.
> +
> + - PCMFillValue : PCM fill value. 0 to 7.
> + Default: 3.
> +
> + - PCMInCallBitclock : PCM interface rate. 0-128Kbps, 1-256Kbps, 2-512Kbps,
> + 3-1024Kbps, 4-2048Kbps.
> + Default: 0.
> +
> + - PCMLSBFirst : PCM LSB first. 0 or 1.
> + Default: 0.
> +
> + - PCMRightJustify : PCM Justify. 0-left, 1-right.
> + Default: 0.
> +
> + - PCMRouting : PCM routing. 0-PCM, 1-SCO over HCI.
> + Default: 0.
> +
> + - PCMShortFrameSync : PCM sync. 0-short, 1-long.
> + Default: 0.
> +
> + - PCMSyncMode : PCM sync mode. 0-slave, 1-master.
Please no CamelCase. These need better descriptions.
> + Default: 0.
> +
> +
> +Example:
> +
> + brcm4354_bt_uart: brcm4354-bt-uart {
> + compatible = "brcm,brcm-bt-uart";
> + bt-wake-gpios = <&gpio4 30 GPIO_ACTIVE_HIGH>;
> + bt-host-wake-gpios = <&gpio4 31 GPIO_ACTIVE_HIGH>;
> + tty = "ttyS0";
> + baud-rate-before-config-download = <3000000>;
> + configure-sleep;
> + configure-audio;
> + PCMClockMode = <0>;
> + PCMFillMethod = <2>;
> + PCMFillNum = <0>;
> + PCMFillValue = <3>;
> + PCMInCallBitclock = <0>;
> + PCMLSBFirst = <0>;
> + PCMRightJustify = <0>;
> + PCMRouting = <0>;
> + PCMShortFrameSync = <0>;
> + PCMSyncMode = <0>;
> + };
> +
> --
> 1.9.1
>
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