On Fri, May 06, 2016 at 08:12:24AM +0200, Krzysztof Kozlowski wrote: > On 05/06/2016 07:44 AM, Peter Chen wrote: > > On Thu, May 05, 2016 at 05:42:40PM -0500, Rob Herring wrote: > >> On Thu, May 05, 2016 at 02:34:13PM +0200, Krzysztof Kozlowski wrote: > >>> Hi, > >>> > >>> This is a different, second try to fix usb3503+lan on Odroid U3 board > >>> if it was initialized by bootloader (e.g. for TFTP boot). > >>> > >>> First version: > >>> http://www.spinics.net/lists/linux-usb/msg140042.html > >>> > >>> > >>> Problem > >>> ======= > >>> When Odroid U3 (usb3503 + smsc95xx + max77686) boots from network (TFTP), > >>> the usb3503 and LAN smsc95xx do not show up in "lsusb". Hard-reset > >>> is required, e.g. by suspend to RAM. The actual TFTP boot does > >>> not have to happen. Just "usb start" from U-Boot is sufficient. > >>> > >>> From the schematics, the regulator is a supply only to LAN, however > >>> without toggling it off/on, the usb3503 hub won appear neither. > >>> > >>> > >>> Solution > >>> ======== > >>> This is very similar to the MMC pwrseq behavior so the idea is to: > >>> 1. Move MMC pwrseq drivers to generic place, > >> > >> You can do that, but I'm going to NAK any use of pwrseq bindings outside > >> of MMC. I think it is the wrong way to do things. The DT should describe > >> the devices. If they happen to be "simple" then the core can walk the > >> tree and do any setup. For example, look for "reset-gpios" and toggle > >> that GPIO. There is no need for a special node. > >> > > > > Oh, I am doing the same thing like this patch set doing. > > Shame on me that I did not use Google before starting the work. I could > just extend your patchset. I think we can combine our efforts. > Sure :) -- Best Regards, Peter Chen -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
