Re: [PATCH RESEND] Bluetooth: btbcm: Add entry for BCM4356A3 UART bluetooth

[Aaron Kling]

On Mon, Sep 14, 2026 at 9:13 AM Luiz Augusto von Dentz
<luiz.dentz@xxxxxxxxx> wrote:
>
> Hi,
>
> On Mon, Sep 14, 2026 at 5:38 AM Aaron Kling via B4 Relay
> <devnull+webgeek1234.gmail.com@xxxxxxxxxx> wrote:
> >
> > From: Aaron Kling <webgeek1234@xxxxxxxxx>
> >
> > This patch adds the device ID for the bluetooth chip used in the
> > Nvidia specific Broadcom BCM4356 PCI-E WiFi / UART BT chip.
> >
> > Signed-off-by: Aaron Kling <webgeek1234@xxxxxxxxx>
> > ---
> >  drivers/bluetooth/btbcm.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c
> > index 463d59890befe..14acea7325478 100644
> > --- a/drivers/bluetooth/btbcm.c
> > +++ b/drivers/bluetooth/btbcm.c
> > @@ -506,6 +506,7 @@ static const struct bcm_subver_table bcm_uart_subver_table[] = {
> >         { 0x6606, "BCM4345C5"   },      /* 003.006.006 */
> >         { 0x230f, "BCM4356A2"   },      /* 001.003.015 */
> >         { 0x2310, "BCM4343A2"   },      /* 001.003.016 */
> > +       { 0x2409, "BCM4356A3"   },      /* 001.004.009 */
> >         { 0x220e, "BCM20702A1"  },      /* 001.002.014 */
> >         { 0x420d, "BCM4349B1"   },      /* 002.002.013 */
> >         { 0x420e, "BCM4349B1"   },      /* 002.002.014 */
> >
> > ---
> > base-commit: 49362394dad7df66c274c867a271394c10ca2bb8
> > change-id: 20260717-bcm4356a3-bt-cd78cc0f42e8
>
> We need some more information, such as:
>
>     Test log:
>
>       Bluetooth: hci0: BCM: chip id 206
>       Bluetooth: hci0: BCM: features 0x0f
>       Bluetooth: hci0: BCM4384B0
>       Bluetooth: hci0: BCM4384B0 (002.001.025) build 0000
>       Bluetooth: hci0: BCM4384B0 'brcm/BCM4384B0.hcd' Patch
>       Bluetooth: hci0: BCM: features 0x0f
>       Bluetooth: hci0: BCM4384B0 AP6684P CN iPA [Version: 1030.1021]
>       Bluetooth: hci0: BCM4384B0 (002.001.025) build 1021
>       Bluetooth: hci0: BCM: Using default device address (43:84:b0:00:76:93)

Sure. This is from a Nvidia SHIELD TV 2019 Pro:

[    9.802656] Bluetooth: hci0: BCM: chip id 122
[    9.808481] Bluetooth: hci0: BCM: features 0x0f
[    9.835172] Bluetooth: hci0: BCM4356A3
[    9.837341] Bluetooth: hci0: BCM4356A3 (001.004.009) build 0000
[    9.844428] Bluetooth: hci0: BCM4356A3
'brcm/BCM4356A3.nvidia,p2894-2551-b00.hcd' Patch
[   12.171393] Bluetooth: hci0: BCM: features 0x0f
[   12.198153] Bluetooth: hci0: BCM4356A3 37.4MHz Class 1.5 Nvidia mDarcy-0108
[   12.203520] Bluetooth: hci0: BCM4356A3 (001.004.009) build 0109

Aaron