[PATCH 6.19 126/220] Bluetooth: qca: fix ROM version reading on WCN3998 chips

Greg Kroah-Hartman
2026-03-23T13:58:12Z

From: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

[ Upstream commit 99b2c531e0e797119ae1b9195a8764ee98b00e65 ]

WCN3998 uses a bit different format for rom version:

[ 5.479978] Bluetooth: hci0: setting up wcn399x
[ 5.633763] Bluetooth: hci0: QCA Product ID :0x0000000a
[ 5.645350] Bluetooth: hci0: QCA SOC Version :0x40010224
[ 5.650906] Bluetooth: hci0: QCA ROM Version :0x00001001
[ 5.665173] Bluetooth: hci0: QCA Patch Version:0x00006699
[ 5.679356] Bluetooth: hci0: QCA controller version 0x02241001
[ 5.691109] Bluetooth: hci0: QCA Downloading qca/crbtfw21.tlv
[ 6.680102] Bluetooth: hci0: QCA Downloading qca/crnv21.bin
[ 6.842948] Bluetooth: hci0: QCA setup on UART is completed

Fixes: 523760b7ff88 ("Bluetooth: hci_qca: Added support for WCN3998")
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/bluetooth/btqca.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
index 7c958d6065bec..86a48d009d1ba 100644
--- a/drivers/bluetooth/btqca.c
+++ b/drivers/bluetooth/btqca.c
@@ -804,6 +804,8 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
*/
if (soc_type == QCA_WCN3988)
rom_ver = ((soc_ver & 0x00000f00) >> 0x05) | (soc_ver & 0x0000000f);
+ else if (soc_type == QCA_WCN3998)
+ rom_ver = ((soc_ver & 0x0000f000) >> 0x07) | (soc_ver & 0x0000000f);
else
rom_ver = ((soc_ver & 0x00000f00) >> 0x04) | (soc_ver & 0x0000000f);

--
2.51.0