[PATCH v2 2/2] Bluetooth: hci_h5: Add power reset via gpio in h5_btrtl_open

From: Vyacheslav Bocharov
Date: Mon Oct 25 2021 - 04:49:42 EST


Add power reset via enable-gpios in h5_btrtl_open function.

Signed-off-by: Vyacheslav Bocharov <adeep@xxxxxxxxx>
---
drivers/bluetooth/hci_h5.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
index 0c0dedece59c..ab7c929cc25d 100644
--- a/drivers/bluetooth/hci_h5.c
+++ b/drivers/bluetooth/hci_h5.c
@@ -968,6 +968,11 @@ static void h5_btrtl_open(struct h5 *h5)
SUSPEND_TIMEOUT_MS);
pm_runtime_enable(&h5->hu->serdev->dev);

+ /* The controller needs reset to startup */
+ gpiod_set_value_cansleep(h5->enable_gpio, 0);
+ gpiod_set_value_cansleep(h5->device_wake_gpio, 0);
+ msleep(100);
+
/* The controller needs up to 500ms to wakeup */
gpiod_set_value_cansleep(h5->enable_gpio, 1);
gpiod_set_value_cansleep(h5->device_wake_gpio, 1);
--
2.30.2