[PATCH 11/12] Bluetooth: hci_qca: Check whether the M.2 UART interface is fixed or not

Manivannan Sadhasivam via B4 Relay
2026-04-22T11:25:13Z

In the M.2 connector, the UART interface is controlled through the
W_DISABLE2# signal. But the BT driver cannot know directly whether this
signal is available or not.

Hence, use the new pwrseq API 'pwrseq_is_fixed()' to check whether the UART
interface on the M.2 connector is fixed or controllable and set the
'bt_en_available' flag accordingly.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
---
drivers/bluetooth/hci_qca.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 3e71a72ea7c7..27e52b08ec47 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -2453,6 +2453,10 @@ static int qca_serdev_probe(struct serdev_device *serdev)
"uart");
if (IS_ERR(qcadev->bt_power->pwrseq))
return PTR_ERR(qcadev->bt_power->pwrseq);
+
+ if (pwrseq_is_fixed(qcadev->bt_power->pwrseq))
+ bt_en_available = false;
+
break;
}

--
2.51.0