Bluetooth: hci_qca: Give enough time to ROME controller to bootup.

[ 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>

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index f036c8f98ea3376317e0256a83cec44a3a4d0cc2..97bc17670b7aac8d453bfb14ac85db2ed125ab28 100644 (file)
--- 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;