On Wed, Jan 18, 2012 at 03:44:59AM +0000, Dong Aisheng-B29396 wrote:
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The real problem is do we need to support individual pin mux Or still
using virtual pin group?
For the way Stephen proposed, we can only support individual pin mux
Since IMX pins are not grouped together in HW.

I do not see any problem here.  If you look at the first column of 'mux'
property of node pinmux-usdhc1, it is a group of pins for usdhc1.
Isn't it one virtual pin group for usdhc1?

If we treat the whole pins in 'mux' property as a group,
There may be potential inconsistent issue since Tegra will treat each
One in the list of 'mux' as a group.
And it would be a problem for pinctrl core to parse it in a standard way.

Based on my understanding, the 'group' given by 'mux' property may be
a group of pin/group defined by hardware, or mixing of the two.

-- 
Regards,
Shawn