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| author | Matthias Kaehlcke <mka@chromium.org> | 2019-02-26 11:46:47 -0800 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2019-02-27 08:44:33 +0100 |
| commit | 0ebcddd8e06e94e476f4718af238e9ae67531b04 (patch) | |
| tree | e6ad64e9d014cb203292792231d8c2f942184f41 /drivers/bluetooth | |
| parent | ad571d725c9786a138d663fb26ae91d84e705900 (diff) | |
| download | linux-rpi-0ebcddd8e06e94e476f4718af238e9ae67531b04.tar.gz linux-rpi-0ebcddd8e06e94e476f4718af238e9ae67531b04.tar.bz2 linux-rpi-0ebcddd8e06e94e476f4718af238e9ae67531b04.zip | |
Bluetooth: hci_qca: Add delay after power-off pulse
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. Remove the previous short settling delay, it isn't needed anymore.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/hci_qca.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index bcc70352eb95..f56d2459ea19 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -1031,13 +1031,13 @@ static int qca_send_power_pulse(struct hci_uart *hu, bool on) } serdev_device_wait_until_sent(hu->serdev, timeout); - - /* Wait for 100 uS for SoC to settle down */ - 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; } |