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Re: serial console: platform_device

To: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Subject: Re: serial console: platform_device
From: Ashlesha Shintre <ashlesha@kenati.com>
Date: Tue, 05 Dec 2006 16:30:58 -0800
Cc: linux-mips@linux-mips.org
In-reply-to: <4575DABF.2000604@ru.mvista.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <1165346639.6871.19.camel@sandbar.kenati.com> <4575CBB6.8030804@ru.mvista.com> <1165351710.6871.34.camel@sandbar.kenati.com> <4575DABF.2000604@ru.mvista.com>
Reply-to: ashlesha@kenati.com
Sender: linux-mips-bounce@linux-mips.org
Hi Sergei,

Another query:

>     Ah, I forgot to mention that if your UART is a part of the south bridge, 
> its IRQ number is _4_ on the integrated 8259 interrupt controller. I'm sure 
> that AU1000_GPIO_0 is the cascaded interrupt request from 8259, not the 
> UART's 
> own IRQ...
> 
> >>static struct plat_serial8250_port encm3_via_uart_data[] = {
> >>                {
> >>                        .mapbase        = 0x3f8,
> >>                        .irq            = AU1000_GPIO_0,
> 
>     So, this is wrong. You need to specify to what platform IRQ 8259's IRQ4 
> gets routed here.
I m not sure what you mean here -- the AU1000_GPIO_0 is the cascaded
interrupt request from the 8259 on the VIA Southbridge -- 

Best Regards,
Ashlesha.


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