Re: [PATCH 0/2] serial: 8250: add support for MediaTek BTIF controller

Andy Shevchenko
2017-08-02T17:14:23Z

On Thu, 2017-08-03 at 01:05 +0800, sean.wang@mediatek.com wrote:
> From: Sean Wang <sean.wang@mediatek.com>
>
> This patchset introduces the support for MediaTek BTIF controller.
>
> MediaTek BTIF controller is the serial interface similar to UART but
> it
> works only as the digital device which is mainly used to communicate
> with
> the connectivity module also called CONNSYS inside the SoC which could
> be
> mostly found on those MediaTek SoCs with Bluetooth feature.
>
> And the controller is made as being compatible with the 8250 register
> layout so it tends to be integrated with existing 8250 core driver and
> have no requirement for the modem configuration additionally such as
> the
> baud rate calculation and assignment.

Why it requires a separate driver?

8250_of is for DT enabled drivers.

>
> Sean Wang (2):
>   dt-bindings: serial: Add MediaTek BTIF controller bindings
>   tty: serial: 8250: Add MediaTek BTIF controller on MT7622 and MT7623
>     SoC
>
>  .../devicetree/bindings/serial/mtk-btif.txt        |  26 +++
>  drivers/tty/serial/8250/8250_btif.c                | 224
> +++++++++++++++++++++
>  drivers/tty/serial/8250/Kconfig                    |   9 +
>  drivers/tty/serial/8250/Makefile                   |   1 +
>  4 files changed, 260 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/serial/mtk-
> btif.txt
>  create mode 100644 drivers/tty/serial/8250/8250_btif.c
>

--
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy