From: Tom Rini <trini@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [U-Boot, 1/2] serial/ns16550: add an option to avoid hanging on broken platforms
Date: Fri, 11 Jan 2013 07:42:15 -0700 [thread overview]
Message-ID: <20130111144215.GC539@bill-the-cat> (raw)
In-Reply-To: <1357558521-19365-1-git-send-email-javier.martinez@collabora.co.uk>
On Mon, Jan 07, 2013 at 01:35:20AM -0000, Javier Martinez Canillas wrote:
> Some platforms (e.g. IGEPv2 board) has a broken ns16550 UART that
> does not set the TEMT bit when the transmitter is empty in SPL.
> This makes U-Boot to hang while waiting for TEMT to be set.
>
> Add a new option to avoid this:
>
> CONFIG_SYS_NS16550_BROKEN_TEMT
>
> 16550 UART set the Transmitter Empty (TEMT) Bit when all output
> has finished and the transmitter is totally empty. U-Boot waits
> for this bit to be set to initialize the serial console. On some
> broken platforms this bit is not set in SPL making U-Boot to
> hang while waiting for TEMT. Define this option to avoid it.
>
> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Applied to u-boot-ti/master, thanks!
--
Tom
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prev parent reply other threads:[~2013-01-11 14:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-07 11:35 [U-Boot] [PATCH 1/2] serial/ns16550: add an option to avoid hanging on broken platforms Javier Martinez Canillas
2013-01-07 11:35 ` [U-Boot] [PATCH 2/2] OMAP3: igep00x0: add CONFIG_SYS_NS16550_BROKEN_TEMT Javier Martinez Canillas
2013-01-11 14:42 ` [U-Boot] [U-Boot, " Tom Rini
2013-01-11 14:42 ` Tom Rini [this message]
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