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SubjectRe: [PATCH v5 1/2] dt-bindings: serial: add documentation for the SiFive UART driver
On Fri, 26 Apr 2019, Rob Herring wrote:

> On Fri, Apr 12, 2019 at 9:01 PM Paul Walmsley <paul.walmsley@sifive.com> wrote:
> >
> > Add DT binding documentation for the Linux driver for the SiFive
> > asynchronous serial IP block.
> >
> > This revision incorporates changes based on feedback from Rob
> > Herring <robh@kernel.org>.
> >
> > Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
> > Signed-off-by: Paul Walmsley <paul@pwsan.com>
> > Cc: linux-serial@vger.kernel.org
> > Cc: devicetree@vger.kernel.org
> > Cc: linux-riscv@lists.infradead.org
> > Cc: linux-kernel@vger.kernel.org
> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > Cc: Rob Herring <robh+dt@kernel.org>
> > Cc: Mark Rutland <mark.rutland@arm.com>
> > Cc: Palmer Dabbelt <palmer@sifive.com>
> > ---
> > .../bindings/serial/sifive-serial.txt | 33 +++++++++++++++++++
> > 1 file changed, 33 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/serial/sifive-serial.txt
>
> Reviewed-by: Rob Herring <robh@kernel.org>

Thanks Rob.

> However, what about flow-control configuration? You'd better think now
> about what the default is and overriding that.

The underlying IP doesn't support it.

https://github.com/sifive/riscv-linux/blob/dev/paulw/dts-v5.1-rc6-experimental/drivers/tty/serial/sifive.c#L30


- Paul

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