Hi Fabe, Yes .. P1020/P1011 RDB has same issue as of P2020RDB.
It was because of some missing patches at u-boot and Linux. U-boot patch : It is already present in open source. Please use latest code base Linux patch : I am in process of posting in open source. Please make mentioned changes of IDSEL. --Prabhakar > -----Original Message----- > From: Fabian Bertholm [mailto:fabeisag...@googlemail.com] > Sent: Monday, April 11, 2011 1:53 PM > To: Kushwaha Prabhakar-B32579 > Cc: Leon Woestenberg; linuxppc-...@ozlabs.org; Mahajan Vivek-B08308; > Felix Radensky; Aggrwal Poonam-B10812; Gupta Maneesh-B18878 > Subject: Re: Problem with mini-PCI-E slot on P2020RDB > > Hello Kushwaha Prabhakar, > > Our impression is that there is the same issue on the P1020/P1011 RDB. > Can you confirm this? > > Best Regards, > Fabe > > > 2011/4/8 Kushwaha Prabhakar-B32579 <b32...@freescale.com>: > > > > > >> -----Original Message----- > >> From: Leon Woestenberg [mailto:leon.woestenb...@gmail.com] > >> Sent: Thursday, April 07, 2011 10:50 PM > >> To: linuxppc-...@ozlabs.org > >> Cc: Kumar Gala; Mahajan Vivek-B08308; Aggrwal Poonam-B10812; Felix > >> Radensky; Kushwaha Prabhakar-B32579 > >> Subject: Re: Problem with mini-PCI-E slot on P2020RDB > >> > >> Hello, > >> > >> On Thu, Dec 17, 2009 at 9:28 PM, Felix Radensky > >> <fe...@embedded-sol.com> > >> wrote: > >> > Kumar Gala wrote: > >> >> On Dec 17, 2009, at 2:59 AM, Mahajan Vivek-B08308 wrote: > >> >>>> Thanks a lot. If I understand you correctly, the only way I can > >> >>>> get ath9k driver to work on this board using legacy interrupts > >> >>>> is to wait for a hardware fix. Right ? > >> >>>> > >> >>> Correct > >> >> > >> >> I'm confused. What's the issue with IRQ0 on the P2020RDB? Is it > >> >> used for another purpose? > >> > > >> > There's a problem with IRQ0 with respect to mini-PCI-E slot. I have > >> > Atheros wireless card plugged into it. ath9k wireless driver for > >> > this card uses legacy PCI-E interrupts, and I get "irq 16: nobody > cared" > >> > message when driver executes request_irq(). Vivek has come to a > >> > conclusion that the problem is related to incorrect IRQ0 routing > >> > for mini-PCI-E slot on P2020RDB. > >> > > >> > >> I would like to understand this issue better, as I seem to be running > >> into something similar, and it puts my board design on hold. > >> > >> Can someone (from Freescale) explain what happens if a PCI Express > >> end point on the mini-PCIe slot raises a legacy interrupt, and where > >> this goes wrong? > >> > >> From what document or source code file can I conclude that the PCIe > >> legacy interrupt is shared with IRQ0? > >> > >> > >> I found this: > >> > >> P1020E/P2020E RDB System Errata, Last Update: 2/15/2010: > >> Problem:IRQ0 held low > >> Fix: Add 4.7K pull-up (to 3.3.V) for RTC_INT_N. > >> See R420 in Rev D schematic. > >> Add 4.7K pull-up (to 3.3.V) for MCU_INT_N. > >> See R423 in Rev D schematic. > >> > >> > > > > Hello Leon, > > > > Yes you are right, PCIe leagacy interrupt is shared with IRQ0. For > Atheros issue. > > Can you please try followings, Meanwhile I will try to dig into it. > > > > http://old.nabble.com/Problem-with-mini-PCI-E-slot-on-P2020RDB-td26802 > > 038.html > > > > Regarding sata_sil24, Please see my e-mail on Linux-ide for correct > IDSEL value. > > Please first try IDSEL value mentioned in email on Linux-ide. Then try > this URL.. > > > > --Prabhakar > > > > _______________________________________________ > > Linuxppc-dev mailing list > > Linuxppc-dev@lists.ozlabs.org > > https://lists.ozlabs.org/listinfo/linuxppc-dev > > _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
