[PATCH AUTOSEL 5.0 097/317] Bluetooth: hci_qca: Give enough time to ROME controller to bootup.

Sasha Levin
2019-05-22T19:51:57Z

From: Balakrishna Godavarthi <bgodavar@codeaurora.org>

[ Upstream commit 7f09d5a6c33be66a5ca19bf9dd1c2d90c5dfcf0d ]

This patch enables enough time to ROME controller to bootup
after we bring the enable pin out of reset.

Fixes: 05ba533c5c11 ("Bluetooth: hci_qca: Add serdev support").
Signed-off-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Reviewed-by: Rocky Liao <rjliao@codeaurora.org>
Tested-by: Rocky Liao <rjliao@codeaurora.org>
Tested-by: Claire Chang <tientzu@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/bluetooth/hci_qca.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index f036c8f98ea33..97bc17670b7aa 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -508,6 +508,8 @@ static int qca_open(struct hci_uart *hu)
qcadev = serdev_device_get_drvdata(hu->serdev);
if (qcadev->btsoc_type != QCA_WCN3990) {
gpiod_set_value_cansleep(qcadev->bt_en, 1);
+ /* Controller needs time to bootup. */
+ msleep(150);
} else {
hu->init_speed = qcadev->init_speed;
hu->oper_speed = qcadev->oper_speed;
--
2.20.1