[V2 1/3] mxc: Add support for the imx51 3-stack board

[Amit Kucheria]

On 10 Jun 04, Sascha Hauer wrote:
> On Thu, Jun 03, 2010 at 08:05:44PM +0800, Jason Wang wrote:
> >  
> > -#define MX51_PAD_GPIO_1_22__UART3_RXD	IOMUX_PAD(0x630, 0x240, 3, 0x0, 0, NO_PAD_CTRL)
> > -#define MX51_PAD_GPIO_1_23__UART3_TXD	IOMUX_PAD(0x634, 0x244, 3, 0x0, 0, NO_PAD_CTRL)
> > +#define MX51_PAD_GPIO_1_22__UART3_RXD	IOMUX_PAD(0x630, 0x240, IOMUX_CONFIG_ALT1, 0x9f4, 4, MX51_UART3_PAD_CTRL)
> > +#define MX51_PAD_GPIO_1_23__UART3_TXD	IOMUX_PAD(0x634, 0x244, IOMUX_CONFIG_ALT1, 0x0, 0, MX51_UART3_PAD_CTRL)
> 
> Urgs, there really is something wrong here.
> 
> First of all, this define should be named MX51_PAD_UART3_RXD__GPIO_1_22
> as it describes the pad UART3_RXD in GPIO_1_22 mode. This seems to be
> wrong with many (all?) defines in this file. Amit, you should have read
> the comment ontop of this file which you copied from the i.MX35 part:

I'll admit that I was not completely conversant with the naming scheme then.
All the GPIO-related names have been reversed. The others seem fine.

> /*
>  * The naming convention for the pad modes is MX51_PAD_<padname>__<padmode>
>  * If <padname> or <padmode> refers to a GPIO, it is named
>  * GPIO_<unit>_<num> see also iomux-v3.h
>  */

There was a comment below this:
/*
 * FIXME: This was converted using scripts from existing Freescale code to
 * this form used upstream. Need to verify the name format.
 */

I obviously reversed the naming for all the GPIO pads.

> This should be fixed before doing any other change to this file.

I'm preparing a patch now.

> Then Jason, what you are looking for is the following:
> 
> #define MX51_PAD_UART3_RXD__UART3_RXD
> 
> because you want the UART3_RXD pad in its native mode.

Cheers,
Amit

-- 
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Amit Kucheria, Kernel Engineer || amit.kucheria at canonical.com
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