On Mon 2014-08-25 20:28:21, Jaehoon Chung wrote:

On 08/25/2014 08:21 PM, Pavel Machek wrote:

quoted

On Thu 2014-08-07 16:37:57, Jaehoon Chung wrote:

quoted

Since used the mmc_of_parse(), didn't parse the sub-node.
So we can remove the sub-node, because almost SoC used the only one card per a host.
And supports-highspeed can be replaced with "cap-mmc/sd-highspeed"
property.

Would it be better to fix parsing of the device tree, and not to
change all the device trees?

Someone will want to do two slots sooner or later...

First, I had considered that controller can be supported the multiple slot.
But MMC maintainers and other people suggested that consider the only one card per a host.
Two slots or more don't have any benefit, (power or performance, etc).

Would you elaborate?

If I have a device like a phone, I may want to put one "slot" inside
phone for basic system, and offer second slot for user expansion
(initially empty).

Or I may want to have internal slot with a card to boot from and have
external slot (initially empty) for system update for embedded system.

I see quite an obvious benefit there.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html