Hi, On Wed, Aug 31, 2016 at 2:29 PM, Heiko Stübner <heiko@xxxxxxxxx> wrote: >> IMHO it would be nice if this were broken into two patches. >> >> 1. First patch would be the power domain patch and that could land any >> time. You wouldn't actually be able to use the gmac but at least >> you'd be able to turn off its power. This would be a handy patch to >> be able to backport if you happened to not need Ethernet support but >> wanted to save power. >> >> 2. Second patch would actually add the gmac. > > according to my talk with Caesar in the real v1, the gmac even with power- > domains should work just nicely even without the dts patches, as the driver > core takes care of powering up the pd before probe. > > But I may miss some peculiarity of the dwmac? Nothing that I'm terribly aware of. I was just being selfish because: 1. I'm on a board where I don't need Ethernet. 2. I'm running a semi old kernel (4.4) 3. I don't want to pick back the various fixes that might be needed to make gmac work on rk3399 to that old kernel. 4. I want it very obvious that gmac isn't really supported on this old kernel on rk3399 (and having stmmac not in the device tree would make it very obvious) 5. I do want the power savings of turning the power domains off for the gmac. If this patch is broken in two then I can pick back just the power domain patch. :-P -Doug -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
