User talk:Sehraf

Status

No Bluetooth in mainline kernel for now.

clk_out_a (at least for Cubietruck) needs to be running but there is no nice way for doing this right now. This might be possible with (brcm) serdev driver in the future.

Firmware

You can find the Firmware for the AP210 here

old 3.8 kernel

Based on this, this and this Bluetooth should work with the 3.8 Kernel. To get it working you need

• UART2 enabled
• brcm_patchram_plus
• (maybe) PH24 and PH18

other things

exporting GPIOs

echo 242 > /sys/class/gpio/export # BT-RESET
echo 248 > /sys/class/gpio/export # BT-WAKE
# change directions
echo out > /sys/class/gpio/gpio242/direction
echo out > /sys/class/gpio/gpio248/direction

I'm not sure about BT-WAKE; some say it should be 0 and some 1. BT-RESET is low active (0=reset)

To get a minimal sign of life from the BT chip (use BT-RESET (1-0-1) and immediately run brcm_patchram_plus ... don't ask me why but this gives at least a single response)

echo 0 > /sys/class/gpio/gpio242/value && echo 1 > /sys/class/gpio/gpio242/value && brcm_patchram_plus -d  --patchram /home/cubie/bcm20710a1.hcd --enable_hci --bd_addr 11:22:33:44:55:66 --no2bytes --tosleep 1000 /dev/ttyS1

Patches

This repo should contain everything needed

stand alone patch for uart2

Patch to enable UART2 (Cubietruck) for bluetooth

diff --git a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
index a6c1a3c..2cd13a3 100644
--- a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+++ b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
@@ -112,6 +112,12 @@
                        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>;