[PATCH v2 0/2] Add support for the Synaptics BCM4384 Bluetooth controller

[PATCH v2 0/2] Add support for the Synaptics BCM4384 Bluetooth controller

[Kaihsin Chung]

The first patch adds the BCM4384 Device Tree compatible string.

The second patch adds the controller support to the Broadcom
Bluetooth driver

Kaihsin Chung (2):
  dt-bindings: net: bluetooth: add BCM4384
  Bluetooth: btbcm: Add Synaptics 4384 chip support

 .../devicetree/bindings/net/bluetooth/brcm,bluetooth.yaml   | 1 +
 drivers/bluetooth/btbcm.c                                   | 6 +++++-
 drivers/bluetooth/hci_bcm.c                                 | 1 +
 3 files changed, 7 insertions(+), 1 deletion(-)

-- 
2.43.0

[PATCH v2 1/2] dt-bindings: net: bluetooth: add BCM4384

[Kaihsin Chung]

Add the brcm,bcm4384-bt compatible string to support the
Synaptics BCM4384 Bluetooth controller.

Signed-off-by: Kaihsin Chung <kaihsin.chung@synaptics.com>
---
 .../devicetree/bindings/net/bluetooth/brcm,bluetooth.yaml        | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/net/bluetooth/brcm,bluetooth.yaml b/Documentation/devicetree/bindings/net/bluetooth/brcm,bluetooth.yaml
index 95501e858e6f..612d21123aaa 100644
--- a/Documentation/devicetree/bindings/net/bluetooth/brcm,bluetooth.yaml
+++ b/Documentation/devicetree/bindings/net/bluetooth/brcm,bluetooth.yaml
@@ -31,6 +31,7 @@ properties:
           - brcm,bcm43540-bt
           - brcm,bcm4335a0
           - brcm,bcm4349-bt
+          - brcm,bcm4384-bt
           - cypress,cyw4373a0-bt
           - infineon,cyw55572-bt
 
-- 
2.43.0

[PATCH v2 2/2] Bluetooth: btbcm: Add Synaptics 4384 chip support

[Kaihsin Chung]

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.

Signed-off-by: Kaihsin Chung <kaihsin.chung@synaptics.com>
---
 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 },
 	{ },
-- 
2.43.0

Re: [PATCH v2 2/2] Bluetooth: btbcm: Add Synaptics 4384 chip support

[Linus Walleij]

On Tue, Aug 18, 2026 at 3:49 AM Kaihsin Chung
<kaihsin.chung@synaptics.corp-partner.google.com> wrote:

> 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.
>
> Signed-off-by: Kaihsin Chung <kaihsin.chung@synaptics.com>

Reviewed-by: Linus Walleij <linusw@kernel.org>

Yours,
Linus Walleij

Re: [PATCH v2 2/2] Bluetooth: btbcm: Add Synaptics 4384 chip support

[Paul Menzel]

Dear Kaihsin,


Thank you for sending v2.

Am 18.08.26 um 03:49 schrieb Kaihsin Chung:
> 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.

Both paragraphs could be merged:

Tested on the Khades single-board computer VIM3. Verified that the 
controller initializes successfully and that firmware loading and basic 
Bluetooth operation work as expected.

> Signed-off-by: Kaihsin Chung <kaihsin.chung@synaptics.com>

Note, the author field uses a different address. It would be better if 
they matched I would suggest to use the synaptics.com address.

> ---
>   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 */

What about A0? It’s not added in the hunks above. Please add a comment 
in the commit message.

> +	{ 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 },
>   	{ },


Kind regards,

Paul

Re: [PATCH v2 1/2] dt-bindings: net: bluetooth: add BCM4384

[Krzysztof Kozlowski]

On Tue, Aug 18, 2026 at 09:49:47AM +0800, Kaihsin Chung wrote:
> Add the brcm,bcm4384-bt compatible string to support the
> Synaptics BCM4384 Bluetooth controller.
> 
> Signed-off-by: Kaihsin Chung <kaihsin.chung@synaptics.com>
> ---
>  .../devicetree/bindings/net/bluetooth/brcm,bluetooth.yaml        | 1 +

It's another version of this patchset with same mistakes. Please read
previous feedback very carefully.

Best regards,
Krzysztof

Re: [PATCH v2 0/2] Add support for the Synaptics BCM4384 Bluetooth controller

[patchwork-bot+bluetooth]

Hello:

This series was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz@intel.com>:

On Tue, 18 Aug 2026 09:49:46 +0800 you wrote:
> The first patch adds the BCM4384 Device Tree compatible string.
> 
> The second patch adds the controller support to the Broadcom
> Bluetooth driver
> 
> Kaihsin Chung (2):
>   dt-bindings: net: bluetooth: add BCM4384
>   Bluetooth: btbcm: Add Synaptics 4384 chip support
> 
> [...]

Here is the summary with links:
  - [v2,1/2] dt-bindings: net: bluetooth: add BCM4384
    https://git.kernel.org/bluetooth/bluetooth-next/c/29d82dcf7273
  - [v2,2/2] Bluetooth: btbcm: Add Synaptics 4384 chip support
    https://git.kernel.org/bluetooth/bluetooth-next/c/9aa9447804c7

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html

[PATCH v2 0/2] Add support for the Synaptics BCM4384 Bluetooth controller

[Andy Chang]

The first patch adds the BCM4384 Device Tree compatible string.

The second patch adds the controller support to the Broadcom
Bluetooth driver

Changes in v2:
 - Patch 1: Added an explanation for why a fallback compatible is not
   suitable.

Andy Chang (2):
  Bluetooth: dt-bindings: net: bluetooth: add BCM4384
  Bluetooth: btbcm: Add Synaptics 4384 chip support

 .../devicetree/bindings/net/bluetooth/brcm,bluetooth.yaml   | 1 +
 drivers/bluetooth/btbcm.c                                   | 6 +++++-
 drivers/bluetooth/hci_bcm.c                                 | 1 +
 3 files changed, 7 insertions(+), 1 deletion(-)

-- 
2.25.1