Re: [PATCH v3 2/2] Bluetooth: btbcm: Add Synaptics 4384 chip support
From: Paul Menzel
Date: Tue Sep 01 2026 - 10:10:06 EST
Dear Andy,
Thank you for your patch. Same comments as in *PATCH v3 1/2*.
Am 01.09.26 um 10:57 schrieb Andy Chang:
Add support for the Synaptics 4384 Bluetooth controller
by adding the corresponding chip IDs.
Tested on the VIM3 platform. Verified that the controller initializes
successfully and that firmware loading and basic Bluetooth operation
work as expected.
The VIM3 is a Khadas single-board computer that I used as the host
platform for testing the BCM4384 Bluetooth controller.
Should you resend, please paste the new Linux log message into the commit message, as most people don’t have the hardware for testing.
Signed-off-by: Andy Chang <andy.chang@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
drivers/bluetooth/btbcm.c | 6 +++++-
drivers/bluetooth/hci_bcm.c | 1 +
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c
index 463d59890bef..63c4c788d9c4 100644
--- a/drivers/bluetooth/btbcm.c
+++ b/drivers/bluetooth/btbcm.c
@@ -31,6 +31,7 @@
#define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}})
#define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}})
#define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}})
+#define BDADDR_BCM4384B0 (&(bdaddr_t) {{0x93, 0x76, 0x00, 0xb0, 0x84, 0x43}})
#define BCM_FW_NAME_LEN 64
#define BCM_FW_NAME_COUNT_MAX 4
@@ -130,7 +131,8 @@ int btbcm_check_bdaddr(struct hci_dev *hdev)
!bacmp(&bda->bdaddr, BDADDR_BCM4345C5) ||
!bacmp(&bda->bdaddr, BDADDR_BCM43430A0) ||
!bacmp(&bda->bdaddr, BDADDR_BCM43430A1) ||
- !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) {
+ !bacmp(&bda->bdaddr, BDADDR_BCM43341B) ||
+ !bacmp(&bda->bdaddr, BDADDR_BCM4384B0)) {
/* Try falling back to BDADDR EFI variable */
if (btbcm_set_bdaddr_from_efi(hdev) != 0) {
bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
@@ -514,6 +516,8 @@ static const struct bcm_subver_table bcm_uart_subver_table[] = {
{ 0x4106, "BCM4335A0" }, /* 002.001.006 */
{ 0x410c, "BCM43430B0" }, /* 002.001.012 */
{ 0x2119, "BCM4373A0" }, /* 001.001.025 */
+ { 0x2128, "BCM4384A0" }, /* 001.001.040 */
+ { 0x4119, "BCM4384B0" }, /* 002.001.025 */
{ }
};
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index 9a103db7e355..e70b9f3fd968 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -1593,6 +1593,7 @@ static const struct of_device_id bcm_bluetooth_of_match[] = {
{ .compatible = "brcm,bcm4349-bt", .data = &bcm43438_device_data },
{ .compatible = "brcm,bcm43540-bt", .data = &bcm4354_device_data },
{ .compatible = "brcm,bcm4335a0" },
+ { .compatible = "brcm,bcm4384-bt" },
{ .compatible = "cypress,cyw4373a0-bt", .data = &cyw4373a0_device_data },
{ .compatible = "infineon,cyw55572-bt", .data = &cyw55572_device_data },
{ },
Reviewed-by: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
Kind regards,
Paul