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

On Aug 22, 2013, at 8:52 PM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:

> 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 ;-)

Aha, that's the typo introduced when copying the previous subject of intro 
mail, ;-)
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