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    Subject[PATCH 5/5] ARM: dts: sunxi: bananapi-m2-plus: Add Bluetooth device node
    Date
    The AP6212 is based on the Broadcom BCM43430 or BCM43438. The WiFi side
    identifies as BCM43430, while the Bluetooth side identifies as BCM43438.

    The Bluetooth side is connected to UART1 in a 4 wire configuration. Same
    as the WiFi side, due to being the same chip and package, the board's
    fixed 3.3V power regulator provides overall power via VBAT and I/O power
    via VDDIO. The RTC clock output from the SoC provides the LPO low power
    clock at 32.768 kHz.

    This patch enables Bluetooth on this board, and also adds the missing
    LPO clock on the WiFi side. There is also a PCM connection for
    Bluetooth, but this is not covered here.

    Signed-off-by: Chen-Yu Tsai <wens@csie.org>
    ---
    arch/arm/boot/dts/sunxi-bananapi-m2-plus.dtsi | 16 +++++++++++++++-
    1 file changed, 15 insertions(+), 1 deletion(-)

    diff --git a/arch/arm/boot/dts/sunxi-bananapi-m2-plus.dtsi b/arch/arm/boot/dts/sunxi-bananapi-m2-plus.dtsi
    index b3283aeb5b7d..3bed375b9c03 100644
    --- a/arch/arm/boot/dts/sunxi-bananapi-m2-plus.dtsi
    +++ b/arch/arm/boot/dts/sunxi-bananapi-m2-plus.dtsi
    @@ -103,6 +103,8 @@
    compatible = "mmc-pwrseq-simple";
    pinctrl-names = "default";
    reset-gpios = <&r_pio 0 7 GPIO_ACTIVE_LOW>; /* PL7 */
    + clocks = <&rtc 1>;
    + clock-names = "ext_clock";
    };
    };

    @@ -215,7 +217,19 @@
    &uart1 {
    pinctrl-names = "default";
    pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
    - status = "okay";
    + uart-has-rtscts;
    + status = "okay";
    +
    + bluetooth {
    + compatible = "brcm,bcm43438-bt";
    + clocks = <&rtc 1>;
    + clock-names = "lpo";
    + vbat-supply = <&reg_vcc3v3>;
    + vddio-supply = <&reg_vcc3v3>;
    + device-wakeup-gpios = <&pio 6 13 GPIO_ACTIVE_HIGH>; /* PG13 */
    + host-wakeup-gpios = <&pio 6 11 GPIO_ACTIVE_HIGH>; /* PG11 */
    + shutdown-gpios = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
    + };
    };

    &usb_otg {
    --
    2.20.1
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