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ccimx8x: bluetooth-init: set 115200bps for SOMv1 

Set a lower baudrate of 115200bps for bluetooth on SOMv1 since
hardware flow control is not available.

Signed-off-by: Gonzalo Ruiz <Gonzalo.Ruiz@digi.com>
This commit is contained in:
Gonzalo Ruiz 2018-09-12 16:36:36 +02:00
parent b6c975c44d
commit e4fbba3dde
1 changed files with 15 additions and 0 deletions
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15
meta-digi-dey/recipes-connectivity/bluez/bluez5-5.46/ccimx8x/bluetooth-init
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@ -46,6 +46,21 @@ bluetooth_init() {
BT_MACADDR="00:04:F3:FF:FF:BB"
fi
# Module version older than revision 2 has swapped CTS and RTS lines
MOD_VERSION="$(($(cat /proc/device-tree/digi,hwid,hv 2>/dev/null | tr -d '\0' || true)))"
if [ "${MOD_VERSION}" -lt "2" ]; then
# Reduce the rate to avoid the need for HW flow control
BT_RATE="115200"
BT_RATE_CODE="00" # 115200 bps
BT_FLOW="noflow"
# Modify the baudrate in the firmware file
BT_FW_FILE="/lib/firmware/qca/nvm_tlv_3.2.bin"
if [ "$(hexdump -s 56 -n 1 -ve '1/1 "%.2x"' ${BT_FW_FILE})" != "${BT_RATE_CODE}" ]; then
printf "\x${BT_RATE_CODE}" | dd of="${BT_FW_FILE}" bs=1 seek=56 count=1 conv=notrunc,fsync 2>/dev/null
fi
fi
# Start the Bluetooth driver and bring up the interface
HCIATTACH_LOG="/var/log/hciattach.log"