Re: [Xen-devel] [PATCH v8 8/5] Add UART support and arch timer initialization for OMAP5

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2013-08-13 at 19:14 +0800, Chen Baozi wrote:
> Since OMAP UART has a few distinct features than common 8250 UART, I
> re-implemented its driver rather than porting it based on ns16550.c.
> There are mainly two big differences between the implementations. First,
> OMAP UART introduces the concept of register access mode, which divides
> the register map into seperated space. Switching the access mode is then
> necessary when configuring it. Second, THRE interrupt needs to be disable
> after finished transmission and enabled once transmission started. This
> is because the semantic of THRE interrupt differs from common 8250 in TI's
> implementation, which would be generated if TX FIFO below trigger level
> and cannot be cleared by simply write to THR once.
> 
> Besides UART driver, arch timer initialization for OMAP5432 platform
> is also done in this patch series.

I applied all 6 of the patches in this series. This intro mail is titled
"8/5" so I hope I got the right number ;-)



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