Re: [PATCH] mmc: dt: Add 'broken-cd' DT binding
From: Chris Ball <hidden>
Date: 2012-08-21 11:56:15
Also in:
linux-mmc, linux-samsung-soc
From: Chris Ball <hidden>
Date: 2012-08-21 11:56:15
Also in:
linux-mmc, linux-samsung-soc
Hi, On Tue, Aug 21 2012, Thomas Abraham wrote:
I am trying to have a way to represent a gpio line as card detect line that is not connected to the card-detect pad of the mmc controller but instead used as a gpio interrupt line or polled gpio line. 'broken-cd' would imply that the card-detect pad of the mmc controller is not connected to the card-detect pin at the slot. The 'cd-gpios' property in that case would let the driver code to use the 'cd-gpios' line as the external gpio interrupt or poll it.
How about this?
broken-cd: No CD available, use polling.
cd-gpios: The CD pin on the host is working and brought out to a GPIO.
external-cd-gpios: The CD pin on the host is broken, but there's an
independent external GPIO available.
(Each host should only have one of these properties.)
Thanks,
- Chris.
--
Chris Ball [off-list ref] <http://printf.net/>
One Laptop Per Child