From: Xiaolei Wang <xiaolei.wang@windriver.com>
To: marcel@holtmann.org
Cc: johan.hedberg@gmail.com, linux-bluetooth@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2] Bluetooth: hci_ll: add a small delay for wl1271 enable bt_en
Date: Tue, 10 Nov 2020 18:13:11 +0800 [thread overview]
Message-ID: <20201110101311.1657220-1-xiaolei.wang@windriver.com> (raw)
When using the wl1271 Bluetooth function of am335x, it is found that the
Bluetooth module cannot respond in time after Bluetooth is enabled, and
a small delay is needed to work normally, so whether to add a small
mdelay.
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
---
drivers/bluetooth/hci_ll.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/bluetooth/hci_ll.c b/drivers/bluetooth/hci_ll.c
index 8bfe024d1fcd..eb1e736efeeb 100644
--- a/drivers/bluetooth/hci_ll.c
+++ b/drivers/bluetooth/hci_ll.c
@@ -626,6 +626,7 @@ static int ll_setup(struct hci_uart *hu)
gpiod_set_value_cansleep(lldev->enable_gpio, 0);
msleep(5);
gpiod_set_value_cansleep(lldev->enable_gpio, 1);
+ mdelay(100);
err = serdev_device_wait_for_cts(serdev, true, 200);
if (err) {
bt_dev_err(hu->hdev, "Failed to get CTS");
--
2.25.1
next reply other threads:[~2020-11-10 10:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-10 10:13 Xiaolei Wang [this message]
2020-11-11 9:58 ` Marcel Holtmann
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