[U-Boot] [PATCH] mx6: Add IOMUX_CONFIG_SION flag to all GPIO pins

[Stefano Babic <sbabic@denx.de>]

Hi Eric,

On 01/10/2013 16:26, Eric Nelson wrote:

> I'm not sure where you're seeing this in the RM, but in
> order to read the pad state when not configured as an input,
> the SION bit needs to be set in the pad mux register on i.MX51/53.

I have checked inside the "37.3.2.2 GPIO Write" for i.MX53 and "
35.4.2.1 Read Value from Pad" for i:MX51, I have not read anything about
SION. If someone has found where it is described, please mail !

> 
> FWIW, this also works when not muxed as a GPIO, which is really
> handy for verifying that a PWM is toggling, et cetera.

Well, if you have directly tested it, it is better proofed as by the
manuals..then we need the same fix for i.MX51/i.MX53, too.

Thanks,
Stefano

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