[PATCH v2 0/2] Bluetooth for the RTL8852BS on BPI-F3

[Frédéric Mahé]

The BPI-F3 (SpacemiT K1) carries an RTL8852BS Wi-Fi + Bluetooth module.
Wi-Fi (SDIO) has no upstream driver, but Bluetooth on UART works with
the existing hci_h5/btrtl code and linux-firmware's rtl8852bs files.

Patch 1 documents the compatible, with rtl8822cs-bt as fallback, so no
driver change is needed. Patch 2 enables it on the BPI-F3.

GPIO usage was tested one line at a time: GPIO 63 is the power/enable
line and GPIO 64 the device wake line. The vendor DT also drives
GPIO 65 and GPIO 67; Bluetooth works without them (and RSSI is the
same with GPIO 67 high or low), so they are left out.

Changes in v2:
- Patch 2: set slow_uart2 to 48 MHz with assigned-clock-rates instead
  of relying on the bootloader (Troy). Checked that a 24 MHz setting
  is applied, then 48 MHz.
- Patch 1: add Conor's Acked-by and Alistair's Reviewed-by.

Link to v1: https://lore.kernel.org/r/20261110074607.363918-1-frederic.mahe@cirad.fr

Frédéric Mahé (2):
  dt-bindings: net: bluetooth: realtek: Add RTL8852BS
  riscv: dts: spacemit: enable Bluetooth on BPI-F3

 .../net/bluetooth/realtek,bluetooth.yaml        | 11 +++++++----
 arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 17 +++++++++++++++++
 2 files changed, 24 insertions(+), 4 deletions(-)


base-commit: 6628e7d4c6b25c8d18f1345e3a20d21829aae7e4
-- 
2.47.3