mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 23:12:32 +00:00
34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
|
From 44843cf006346751e42c0f4100eea7cefe61cbdf Mon Sep 17 00:00:00 2001
|
||
|
|
From: Stefan Wahren <wahrenst@gmx.net>
|
||
|
|
Date: Sun, 6 Oct 2019 17:28:19 +0200
|
||
|
|
Subject: [PATCH] Bluetooth: hci_bcm: Fix RTS handling during startup
|
||
|
|
|
||
|
|
commit 3347a80965b38f096b1d6f995c00c9c9e53d4b8b upstream.
|
||
|
|
|
||
|
|
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 | 2 ++
|
||
|
|
1 file changed, 2 insertions(+)
|
||
|
|
|
||
|
|
--- a/drivers/bluetooth/hci_bcm.c
|
||
|
|
+++ b/drivers/bluetooth/hci_bcm.c
|
||
|
|
@@ -448,9 +448,11 @@ static int bcm_open(struct hci_uart *hu)
|
||
|
|
|
||
|
|
out:
|
||
|
|
if (bcm->dev) {
|
||
|
|
+ hci_uart_set_flow_control(hu, true);
|
||
|
|
hu->init_speed = bcm->dev->init_speed;
|
||
|
|
hu->oper_speed = bcm->dev->oper_speed;
|
||
|
|
err = bcm_gpio_set_power(bcm->dev, true);
|
||
|
|
+ hci_uart_set_flow_control(hu, false);
|
||
|
|
if (err)
|
||
|
|
goto err_unset_hu;
|
||
|
|
}
|