* [PATCH v2] Bluetooth: hci_ll: add a small delay for wl1271 enable bt_en
@ 2020-11-10 10:13 Xiaolei Wang
2020-11-11 9:58 ` Marcel Holtmann
0 siblings, 1 reply; 2+ messages in thread
From: Xiaolei Wang @ 2020-11-10 10:13 UTC (permalink / raw)
To: marcel; +Cc: johan.hedberg, linux-bluetooth, linux-kernel
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2] Bluetooth: hci_ll: add a small delay for wl1271 enable bt_en
2020-11-10 10:13 [PATCH v2] Bluetooth: hci_ll: add a small delay for wl1271 enable bt_en Xiaolei Wang
@ 2020-11-11 9:58 ` Marcel Holtmann
0 siblings, 0 replies; 2+ messages in thread
From: Marcel Holtmann @ 2020-11-11 9:58 UTC (permalink / raw)
To: Xiaolei Wang; +Cc: Johan Hedberg, linux-bluetooth, linux-kernel
Hi Xiaolei,
> 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(+)
patch has been applied to bluetooth-next tree.
Regards
Marcel
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-11-10 10:13 [PATCH v2] Bluetooth: hci_ll: add a small delay for wl1271 enable bt_en Xiaolei Wang
2020-11-11 9:58 ` Marcel Holtmann
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