ttySAC0 or ttyS0 in 3.6.x ARM Linux?

ttySAC0 or ttyS0 in 3.6.x ARM Linux?

[woody]

Hi,

In the 3.6.6 ARM kernel, should I use ttySAC0 or ttyS0 to specify the 
'console' kernel command line?

Thanks.

-- 
woody
I can't go back to yesterday - because I was a different person then.

ttySAC0 or ttyS0 in 3.6.x ARM Linux?

[Domenico Andreoli]

On Thu, Nov 15, 2012 at 03:07:24PM +0800, woody wrote:
> Hi,

Hi,

> In the 3.6.6 ARM kernel, should I use ttySAC0 or ttyS0 to specify
> the 'console' kernel command line?

it depends on the driver used for your console. ttySAC is Samsung. which
kind of uart do you have?

Regards,
Domenico

ttySAC0 or ttyS0 in 3.6.x ARM Linux?

[Woody Wu]

? 2012-11-15 PM9:40?"Domenico Andreoli" <cavokz@gmail.com>???
>
> On Thu, Nov 15, 2012 at 03:07:24PM +0800, woody wrote:
> > Hi,
>
> Hi,
>
> > In the 3.6.6 ARM kernel, should I use ttySAC0 or ttyS0 to specify
> > the 'console' kernel command line?
>
> it depends on the driver used for your console. ttySAC is Samsung. which
> kind of uart do you have?
>
> Regards,
> Domenico

It's a Samsung CPU, s3c2410. How do I check which driver I used in my
kernel config?  I started from s3c2410_defconfig.

I am sure it is ttySAC0 in my 2.6.36 configuration.  Thanks.
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ttySAC0 or ttyS0 in 3.6.x ARM Linux?

[Russell King - ARM Linux]

On Thu, Nov 15, 2012 at 03:07:24PM +0800, woody wrote:
> In the 3.6.6 ARM kernel, should I use ttySAC0 or ttyS0 to specify the  
> 'console' kernel command line?

That depends on what type of UART you're using.  ttyS is for 8250 ports.
ttySAC ended up being used for various SoC based ports which aren't
8250 based.

ttySAC0 or ttyS0 in 3.6.x ARM Linux?

[Woody Wu]

On 2012-11-15, Russell King - ARM Linux <linux@arm.linux.org.uk> wrote:
> On Thu, Nov 15, 2012 at 03:07:24PM +0800, woody wrote:
>> In the 3.6.6 ARM kernel, should I use ttySAC0 or ttyS0 to specify the  
>> 'console' kernel command line?
>
> That depends on what type of UART you're using.  ttyS is for 8250 ports.
> ttySAC ended up being used for various SoC based ports which aren't
> 8250 based.

Thanks. I think I understood.

The only strange thing is that, however, on my here this is a 2.6.16.4
kernel, that was using ttyS instead of ttySAC for the same physical port
on the same board.

-- 
-woody
I can't go back to yesterday - because I was a different person then.