Messages in this thread Patch in this message | | | From | Matthias Kaehlcke <> | Subject | [PATCH 3/3] Bluetooth: hci_qca: Add delay after power-off pulse | Date | Mon, 25 Feb 2019 15:49:54 -0800 |
| |
During initialization the power-on pulse is currently sent inmediately after the prior power-off pulse. With this initialization often fails at boot time:
[ 15.205224] Bluetooth: hci0: setting up wcn3990 [ 17.341062] Bluetooth: hci0: command 0xfc00 tx timeout [ 22.101453] ERROR: Bluetooth initialization failed [ 25.337740] Bluetooth: hci0: Reading QCA version information failed (-110)
After a power-off pulse wait 10ms to give the controller time to power off.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org> --- drivers/bluetooth/hci_qca.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index eacc108c422d0..c89c1ed87ffe9 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -1036,8 +1036,11 @@ static int qca_send_power_pulse(struct hci_uart *hu, bool on) usleep_range(100, 200); hci_uart_set_flow_control(hu, false); + /* Give to controller time to boot/shutdown */ if (on) msleep(100); + else + msleep(10); return 0; } -- 2.21.0.rc0.258.g878e2cd30e-goog
| |