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Re: [Qemu-devel] [Qemu-arm] [PATCH] char: cadence: check divider against

From: Edgar E. Iglesias
Subject: Re: [Qemu-devel] [Qemu-arm] [PATCH] char: cadence: check divider against baud rate
Date: Thu, 20 Oct 2016 19:21:46 +0200
User-agent: Mutt/1.5.24 (2015-08-30)

On Thu, Oct 20, 2016 at 11:25:47AM +0530, P J P wrote:
> +-- On Wed, 19 Oct 2016, Alistair Francis wrote --+
> | I don't think the Cadence datasheets are public. If you can't find it
> | from a simple Google search I don't think you have access.
>   I see, okay.
> I think it'll greatly help if device emulator writers include a link to its 
> specification/datasheet resources in the respective source file. At least if 
> these are publicly available. That way one knows for sure which 
> specifications 
> to follow while debugging, instead of searching and sifting through multiple 
> different versions. OR Maybe there could a field in the MAINTAINERS file 
> which 
> would point to respective reference resources. (just a thought)


The UART is described in the Zynq TRMs, I think you can just
google for zynq TRM and a reference to UG585 and UG1085 will come up.


AFAIK, the ZynqMP has a newer version of the cadence UART with a superset of
the feature set. I don't think QEMU models any of the differences though.


> Thank you.
> --
> Prasad J Pandit / Red Hat Product Security Team
> 47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F

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