From: Michael Ellerman <mpe@ellerman.id.au>
To: Daniel Walker <danielwa@cisco.com>,
linuxppc-dev@ozlabs.org,
"xe-kernel@external.cisco.com" <xe-kernel@external.cisco.com>,
Kumar Gala <galak@kernel.crashing.org>,
oss@buserror.net
Subject: Re: udgb on fsl booke?
Date: Mon, 16 May 2016 11:40:19 +1000 [thread overview]
Message-ID: <1463362819.5704.8.camel@ellerman.id.au> (raw)
In-Reply-To: <57367455.5060306@cisco.com>
On Fri, 2016-05-13 at 17:41 -0700, Daniel Walker wrote:
> Hi,
>
> I noticed that udbg is missing for fsl booke , or at least it doesn't
> appear to be implemented. I don't know a great deal about fsl book. I'm
> working on an MCP85XX at the moment , and I was looking into the udbg
> system to get prints. It looks like fsl booke might be similar enough to
> 44x to use the already implemented udbg routines for that.
>
> Does anyone have suggestion on this ? Is fsl booke missing because it's
> not possible to have this, or no one ever needed it ?
Yeah I noticed this recently too.
I don't know the history of why there isn't one, I suspect probably it just was
never merged upstream. Hopefully someone from Freescale can chime in.
On my machine (p5020ds) there is a real UART, so it should just be a matter of
creating a mapping for it and then using the existing udbg_16550 code.
cheers
next prev parent reply other threads:[~2016-05-16 1:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-14 0:41 udgb on fsl booke? Daniel Walker
2016-05-16 1:40 ` Michael Ellerman [this message]
2016-05-16 2:46 ` Scott Wood
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