From: Keir Fraser <keir.xen@gmail.com>
To: Ian Campbell <ian.campbell@citrix.com>, xen-devel@lists.xen.org
Cc: keir@xen.org, stefano.stabellini@eu.citrix.com,
julien.grall@linaro.org, tim@xen.org, jbeulich@suse.com,
Josh Zhao <joshsystem@gmail.com>
Subject: Re: [PATCH RFC 4/8] ns16550: support DesignWare 8250
Date: Tue, 10 Sep 2013 07:36:50 -0700 [thread overview]
Message-ID: <CE547C92.5D47B%keir.xen@gmail.com> (raw)
In-Reply-To: <1378822705-19310-4-git-send-email-ian.campbell@citrix.com>
On 10/09/2013 07:18, "Ian Campbell" <ian.campbell@citrix.com> wrote:
> This hardware has an additional feature which signals an error if you try to
> write LCR while the UART is busy. We need to clear this error during setup,
> otherwise LCR.DLAB doesn't get set and we cannot read/write the divisor.
>
> This has been tested on the cubieboard2
>
> Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
> Cc: keir@xen.org
> Cc: jbeulich@suse.com
Acked-by: Keir Fraser <keir@xen.org>
next prev parent reply other threads:[~2013-09-10 14:36 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-10 14:18 [PATCH RFC 0/8] xen/arm: very initial cubieboard2 support Ian Campbell
2013-09-10 14:18 ` [PATCH RFC 1/8] xen/arm: Implement ioremap Ian Campbell
2013-09-10 15:03 ` Julien Grall
2013-09-10 15:14 ` Ian Campbell
2013-09-10 15:20 ` Julien Grall
2013-09-10 14:18 ` [PATCH RFC 2/8] xen/arm: implement read[bl] and write[bl] Ian Campbell
2013-09-10 15:00 ` Julien Grall
2013-09-10 15:09 ` Ian Campbell
2013-09-10 15:12 ` Julien Grall
2013-09-10 15:15 ` Ian Campbell
2013-09-10 14:18 ` [PATCH RFC 3/8] ns16550: make usable on ARM Ian Campbell
2013-09-10 14:36 ` Keir Fraser
2013-09-10 14:45 ` Ian Campbell
2013-09-10 15:00 ` Jan Beulich
2013-09-10 15:11 ` Ian Campbell
2013-09-10 15:18 ` Jan Beulich
2013-09-10 15:21 ` Ian Campbell
2013-09-10 14:18 ` [PATCH RFC 4/8] ns16550: support DesignWare 8250 Ian Campbell
2013-09-10 14:36 ` Keir Fraser [this message]
2013-09-10 15:02 ` Jan Beulich
2013-09-10 15:12 ` Ian Campbell
2013-09-10 15:19 ` Jan Beulich
2013-09-10 15:21 ` Ian Campbell
2013-09-10 15:28 ` Jan Beulich
2013-09-10 15:30 ` Ian Campbell
2013-09-10 14:18 ` [PATCH RFC 5/8] xen/arm: Support Cortex-A7 GIC Ian Campbell
2013-09-10 14:18 ` [PATCH RFC 6/8] xen/arm: Basic support for sunxi/sun7i platform Ian Campbell
2013-09-10 14:18 ` [PATCH RFC 7/8] xen/arm: Blacklist some sun7i UARTs Ian Campbell
2013-09-10 14:18 ` [PATCH RFC 8/8] xen/arm: Some early trap logging Ian Campbell
2013-09-13 13:26 ` Julien Grall
2013-09-13 13:35 ` Ian Campbell
2013-09-13 13:44 ` Julien Grall
2013-09-11 2:05 ` [PATCH RFC 0/8] xen/arm: very initial cubieboard2 support Josh Zhao
2013-09-11 10:15 ` Ian Campbell
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