On 04/07/2017 03:50 PM, Shawn Lin wrote: > Hi Brian, > > On 2017/4/7 6:04, Brian Norris wrote: >> Hi, >> >> On Thu, Mar 30, 2017 at 02:11:19PM +0900, Jaehoon Chung wrote: >>> On 03/30/2017 11:53 AM, Brian Norris wrote: >>>> On Thu, Mar 30, 2017 at 10:18:59AM +0800, Eddie Cai wrote: >>>>> I test on rk3288 firefly reload with 4.11-rc4. It work fine. >>>> >>>> OK, thanks for checking. >>>> >>>>>> On Thu, Mar 30, 2017 at 09:32:22AM +0800, Shawn Lin wrote: >>>>>>> Hi Brian, >>>>>>> >>>>>>> On 2017/3/30 9:17, Brian Norris wrote: >>>>>>>> Hi all, >>>>>>>> >>>>>>>> I haven't managed to get as far as a bugfix for this, but I've bisected >>>>>>>> some issues seen on v4.10+ with a Chromebook of the Veyron family (Jaq, >>>>>>>> in particular). v4.9 works fine. >>>> >>>> [...] >>>> >>>> By the way, Kevin (CC'd) says he noticed similiar Wifi issues on an >>>> Exynos 5800 Peach chromebook, but not on an Exynos 5250 Snow chromebook. >>>> I haven't picked these apart yet to see what the differences and >>>> similarities are, but presumably it's not actually a Rockchip-specific >>>> bug. Maybe related to the way power sequencing is plumbed for these, for >>>> example? >>> >>> I'm not sure but if card-detecting is polling, the timing issue could be occurred. >> >> I don't know much about MMC in general, nor about this driver. Any >> chance you'd accept reverts of the patches in question though? This is a >> huge regression, and there were only a few relevant changes that seem to >> have triggered this. I can try to come up with something targeted, but >> I'm not going to even try if that'd get rejected up front. > > Untile now, none of my(and my colleagues') rockchip platforms are able > to reproduce this issue, so I can't tell what exactly the problem is. > However, I noticed you mentioned that the Exynos platforms are also > affected by rpm of dwmmc. I don't see dw_mmc-exynos enable this feature, > so it looks quite odd to me! Well, exynos boards what i have didn't see the similar issue. But i will test all exynos boards for reproducing this. > > Can I or Eddie get a Veyron board to help you debug it? > >> >> Brian >> >> >> > > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
