Hi Kukjin, On 15 May 2012 10:01, Inderpal Singh <inderpal.singh@xxxxxxxxxx> wrote: > Hi Kukjin, > > On 14 May 2012 19:13, Kukjin Kim <kgene.kim@xxxxxxxxxxx> wrote: >> On 05/14/12 17:42, Inderpal Singh wrote: >>> >>> Hi Kukjin, >>> >>> On 14 May 2012 13:45, Kukjin Kim<kgene.kim@xxxxxxxxxxx> wrote: >>>> >>>> Inderpal Singh wrote: >>>>> >>>>> >>>>> Upon wake-up, clear the sleep mode set in INFORM1 register. >>>>> >>>> Is this for wake-up or _really_ software reset? And is this available on >>>> all >>>> of EXYNOS4 SoCs? >>> >>> >>> This is for soft reboot hang after one cycle of suspend/resume is >>> complete. >>> And yes this is applicable for all exynos SOCs. >>> >> Hi, >> >> As I know, we don't need it for all of EXYNOS SoCs but let me check about >> the situation you said with hardware engineer tomorrow. If any updates, let >> you know. >> > Any updates on this ? As i mentioned below, Its applicable for Origen, Pegasus and 5250 as well. > The issue happens because u-boot checks INFROM1 register to know if > its wake-up from sleep. Hence if INFORM1 is not cleared, the soft > reboot after one suspend/resume cycle will be understood by u-boot as > wake-up from sleep, so it will try to resume and will hang up. > > I have faced this issue on Origen, Pegasus SMDK and 5250 SMDK. > > Thanks, > Inder > >> >> Thanks. >> >> Best regards, >> Kgene. >> -- >> Kukjin Kim <kgene.kim@xxxxxxxxxxx>, Senior Engineer, >> SW Solution Development Team, Samsung Electronics Co., Ltd. With Regards, Inder -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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