linux-kernel - Re: [PATCH v3 2/2] serial: 8250: of: Add new port type for MediaTek BTIF controller on MT7622/23 SoC

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Message-ID: <CAK8P3a0GWir3RxQug4C0hmO-_-nki7UY8Bd1a1XR=LN_mK_9zA@mail.gmail.com>
Date:   Mon, 21 Aug 2017 11:50:37 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Sean Wang <sean.wang@...iatek.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        gregkh <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Joel Stanley <joel@....id.au>, david@...hnology.com,
        jan.kiszka@...mens.com,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        hpeter@...il.com, vigneshr@...com,
        Matthias Brugger <matthias.bgg@...il.com>,
        tthayer@...nsource.altera.com, devicetree@...r.kernel.org,
        "moderated list:ARM/Mediatek SoC..." 
        <linux-mediatek@...ts.infradead.org>, linux-serial@...r.kernel.org,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/2] serial: 8250: of: Add new port type for MediaTek
 BTIF controller on MT7622/23 SoC

On Sun, Aug 20, 2017 at 7:17 PM,  <sean.wang@...iatek.com> wrote:
> From: Sean Wang <sean.wang@...iatek.com>
>
> 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 called CONNSYS inside the SoC which could be mostly
> found on those MediaTek SoCs with Bluetooth feature such as MT7622 and
> MT7623 SoCs.
>
> And the controller is made as being compatible with the 8250 register
> layout with extra registers such as DMA enablement so it tends to be
> integrated with reusing 8250 OF driver. However, DMA mode is not being
> supported yet in the current driver.
>
> Signed-off-by: Sean Wang <sean.wang@...iatek.com>
> Suggested-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

Acked-by: Arnd Bergmann <arnd@...db.de>