openwrt/target/linux/sunxi/patches-4.1/202-dt-sun7i-add-bluetooth-to-cubietruck.patch

From c6e2b7dad39a7887f935458d1c8de84db06243e1 Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens@csie.org>
Date: Thu, 26 Dec 2013 17:15:47 +0800
Subject: [PATCH] ARM: dts: sun7i: add bluetooth module to CubieTruck DTS

The CubieTruck has an AMPAK AP6210 WiFi+Bluetooth module. The
Bluetooth part is a BCM20710 IC connected to UART2 in the A20
SoC. The IC also takes a 32.768 KHz low power clock input, a power
enable signal and a wake signal via GPIO.

The Bluetooth module supports out-of-band interrupt signaling via
GPIO, but this is not supported in this patch.
---
 arch/arm/boot/dts/sun7i-a20-cubietruck.dts | 36 ++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

Index: linux-4.1.3/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
===================================================================
--- linux-4.1.3.orig/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+++ linux-4.1.3/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
@@ -88,6 +88,20 @@
 				interrupts = <10 8>; /* PH10 / EINT10 */
 				interrupt-names = "host-wake";
 			};
+
+			bt_pwr_pin: bt_pwr_pin@0 {
+				allwinner,pins = "PH18";
+				allwinner,function = "gpio_out";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
+
+			bt_wake_pin: bt_wake_pin@0 {
+				allwinner,pins = "PH24";
+				allwinner,function = "gpio_out";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
 		};
 
 		usbphy: phy@01c13400 {
@@ -171,6 +185,12 @@
 			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>;
@@ -264,6 +284,22 @@
 		enable-active-high;
 		gpio = <&pio 7 9 GPIO_ACTIVE_HIGH>;
 	};
+
+	rfkill-switches {
+		compatible = "simple-bus";
+		pinctrl-names = "default";
+
+		rfkill_bt {
+			compatible = "rfkill-gpio";
+			pinctrl-0 = <&bt_pwr_pin>, <&clk_out_a_pins_a>;
+			rfkill-name = "bt";
+			rfkill-type = <2>;
+			bt_shutdown-gpios = <0>, <&pio 7 18 0>; /* PH18 */
+			bt_reset-gpios = <&pio 7 24 0>; /* PH24 */
+			clocks = <&clk_out_a>;
+			clock-frequency = <32768>;
+		};
+	};
 };
 
 #include "axp209.dtsi"