Re: [REGRESSION] Arndale Octa panics when booting 3.14-rc1

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On Tue, Mar 04, 2014 at 10:30:19AM +0000, Sylwester Nawrocki wrote:
> On 04/03/14 11:16, Javi Merino wrote:
> > Yes, with [1] applied I don't get a kernel panic but the kernel fails
> > to boot later on with an Imprecise external abort.  Removing the mdma
> > nodes from the dts gets rid of that.  I guess what's missing is what
> > you said: clocks for the mdma devices.
> 
> Is removing mdm0 node enough to fix the boot failure, or both have to be
> removed ?

Actually, you it's only mdma1.  Just removing the mdma1 node from the
dt fixes the imprecise external abort.

> Unfortunately I don't access to exynos5420 datasheet at the moment, I've
> added guys from Samsung Linaro Landing Team at cc, hopefully they can
> provide a patch for the clocks driver to fix this.

Thanks,
Javi

> > 8<---
> > [    8.060000] mmc_host mmc0: Bus speed (slot 0) = 50000000Hz (slot req 52000000Hz, actual 50000000HZ d)
> > [    8.070000] Registering SWP/SWPB emulation handler
> > [    8.075000] s3c-rtc 101e0000.rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
> > [    8.080000] mmc_host mmc0: Bus speed (slot 0) = 100000000Hz (slot req 52000000Hz, actual 50000000HZ )
> > [    8.090000] Freeing unused kernel memory: 220K (c04c1000 - c04f8000)
> > [    8.100000] Unhandled fault: imprecise external abort (0x1406) at 0x00000000
> > [    8.105000] mmc0: new high speed DDR MMC card at address 0001
> > [    8.110000] mmcblk0: mmc0:0001 M4G1FB 3.64 GiB 
> > [    8.115000] mmcblk0boot0: mmc0:0001 M4G1FB partition 1 1.00 MiB
> > [    8.120000] mmcblk0boot1: mmc0:0001 M4G1FB partition 2 1.00 MiB
> > [    8.125000] mmcblk0rpmb: mmc0:0001 M4G1FB partition 3 128 KiB
> > [    8.135000]  mmcblk0: p1 p2 p3 p4
> > [    8.140000] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000007
> > [    8.140000] 
> > [    8.140000] CPU: 0 PID: 1 Comm: init Not tainted 3.14.0-rc5-00002-g691b10f #189
> > [    8.140000] [<c0013e24>] (unwind_backtrace) from [<c0011238>] (show_stack+0x10/0x14)
> > [    8.140000] [<c0011238>] (show_stack) from [<c038218c>] (dump_stack+0x64/0xb4)
> > [    8.140000] [<c038218c>] (dump_stack) from [<c037f6f4>] (panic+0x8c/0x1dc)
> > [    8.140000] [<c037f6f4>] (panic) from [<c001f178>] (do_exit+0x80c/0x8b8)
> > [    8.140000] [<c001f178>] (do_exit) from [<c001f310>] (do_group_exit+0x3c/0xb0)
> > [    8.140000] [<c001f310>] (do_group_exit) from [<c00298a0>] (get_signal_to_deliver+0x278/0x500)
> > [    8.140000] [<c00298a0>] (get_signal_to_deliver) from [<c001076c>] (do_signal+0x78/0x398)
> > [    8.140000] [<c001076c>] (do_signal) from [<c0010db4>] (do_work_pending+0x64/0xac)
> > [    8.140000] [<c0010db4>] (do_work_pending) from [<c000e460>] (work_pending+0xc/0x20)
> > 8<---

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