linux-kernel - Re: [PATCH v5 0/2] tty: serial: add DT bindings and serial driver for the SiFive FU540 UART

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Message-ID: <alpine.DEB.2.21.9999.1904241157300.10713@viisi.sifive.com>
Date:   Wed, 24 Apr 2019 11:58:26 -0700 (PDT)
From:   Paul Walmsley <paul.walmsley@...ive.com>
To:     Kevin Hilman <khilman@...libre.com>
cc:     Atish Patra <atish.patra@....com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v5 0/2] tty: serial: add DT bindings and serial driver
 for the SiFive FU540 UART

Hi Kevin,

On Fri, 19 Apr 2019, Kevin Hilman wrote:
> Atish Patra <atish.patra@....com> writes:
> > On 4/18/19 4:22 PM, Kevin Hilman wrote:
> >> Paul Walmsley <paul.walmsley@...ive.com> writes:
> >> 
> >>> This series adds a serial driver, with console support, for the
> >>> UART IP block present on the SiFive FU540 SoC.  The programming
> >>> model is straightforward, but unique.
> >>>
> >>> Boot-tested on a SiFive FU540 HiFive-U board, using BBL and the
> >>> open-source FSBL (with appropriate patches to the DT data).
> >>>
> >>> This fifth version fixes a bug in the set_termios handler,
> >>> found by Andreas Schwab <schwab@...e.de>.
> >>>
> >>> The patches in this series can also be found, with the PRCI patches,
> >>> DT patches, and DT prerequisite patch, at:
> >>>
> >>> https://github.com/sifive/riscv-linux/tree/dev/paulw/serial-v5.1-rc4

...

> I've just updated to u-boot master branch with SMP enabled, and build a
> new openSBI (also from master branch) with u-boot payload. Using your
> v5.1-rc4_unleashed branch, I see 4 CPUs booting:
> https://termbin.com/kg13

Now that the serial driver is working for you, care to send a Tested-by: ?


thanks,

- Paul