The CubieTruck has an AMPAK AP6210 WiFi+Bluetooth module. The Bluetooth
part is a BCM20710 device connected to UART2 in the A20 SoC.
The IC requires a 32.768 KHz low power clock input for proper
auto-detection of the main clock, and an enable signal via GPIO.
Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
---
arch/arm/boot/dts/sun7i-a20-cubietruck.dts | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
index cb25d3c..767c8e1 100644
--- a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+++ b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
@@ -61,6 +61,13 @@
allwinner,drive = <0>;
allwinner,pull = <0>;
};
+
+ bt_pwr_pin_cubietruck: bt_pwr_pin@0 {
+ allwinner,pins = "PH18";
+ allwinner,function = "gpio_out";
+ allwinner,drive = <0>;
+ allwinner,pull = <0>;
+ };
};
uart0: serial@01c28000 {
@@ -69,6 +76,12 @@
status = "okay";
};
+ uart2: serial@01c28800 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart2_pins_a>;
+ status = "okay";
+ };
+
i2c0: i2c@01c2ac00 {
pinctrl-names = "default";
pinctrl-0 = <&i2c0_pins_a>;
@@ -139,4 +152,16 @@
reg_usb2_vbus: usb2-vbus {
status = "okay";
};
+
+ rfkill_bt {
+ compatible = "rfkill-gpio";
+ pinctrl-names = "default";
+ pinctrl-0 = <&bt_pwr_pin_cubietruck>, <&clk_out_a_pins_a>;
+ clocks = <&clk_out_a>;
+ clock-frequency = <32768>;
+ gpios = <&pio 7 18 0>; /* PH18 */
+ gpio-names = "reset";
+ rfkill-name = "bt";
+ rfkill-type = <2>;
+ };
};
--
1.9.1
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