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Bluetooth: hci_bcm: Fix RTS handling during startup
authorStefan Wahren <wahrenst@gmx.net>
Sun, 6 Oct 2019 15:28:19 +0000 (17:28 +0200)
committerMarcel Holtmann <marcel@holtmann.org>
Mon, 21 Oct 2019 15:05:14 +0000 (17:05 +0200)
commit3347a80965b38f096b1d6f995c00c9c9e53d4b8b
tree9f65520a39317e5df0a9194f7f3365c07843ef8atree | snapshot
parentbba79fee7a54ff5351fa36cb324d16b108a7ca06commit | diff
Bluetooth: hci_bcm: Fix RTS handling during startup

The RPi 4 uses the hardware handshake lines for CYW43455, but the chip
doesn't react to HCI requests during DT probe. The reason is the inproper
handling of the RTS line during startup. According to the startup
signaling sequence in the CYW43455 datasheet, the hosts RTS line must
be driven after BT_REG_ON and BT_HOST_WAKE.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
drivers/bluetooth/hci_bcm.c diff | blob | history