Subject: [PATCHv4 00/35] ARM: OMAP2+: PRCM / SCM cleanups against 4.0-rc1

From: [email-masked] (Tony Lindgren)
Date: Wed, 18 Mar 2015 15:07:02 -0700

* Tero Kristo <[email-masked]> [150318 07:45]:
> Hi,
> 
> Changes in this set compared to v3:
> 
> - Changed the SCM module DT node layout based on comments from Tony;
>   basically the wkup / core are split into their own nodes now. This
>   applies for omap3, omap4, omap5 and dra7, rest of the SoCs have their
>   control module integrated as one instance (Patch 26, 30, 33, 34)
> - Changed the tisyscon node name to scm_conf. This name is more
>   descriptive for the purpose being used, scm_conf was already used
>   as an alias (Patch 24, 25, 27, 29)
> - Rest of the patches have no changes compared to v3.
> 
> Testing done:
> - am335x-evm      : boot
> - am335x-evmsk    : boot
> - am3517-evm      : boot
> - am43x-epos-evm  : boot
> - am437x-gp-evm   : boot
> - omap3-beagle-xm : boot
> - omap3-beagle    : boot, suspend-resume (ret/off), cpuidle (ret/off)
> - am335x-boneblack: boot
> - am335x-bone     : boot
> - dra7xx-evm      : boot
> - omap3-n900      : boot
> - omap5-uevm      : boot
> - omap4-panda-es  : boot, suspend-resume (ret), cpuidle (ret)
> - omap4-panda     : boot
> - omap2430-sdp    : boot
> - omap3430-sdp    : boot
> - omap4-sdp-es23plus: boot
> 
> Test branch pushed at:
> - tree: https://github.com/t-kristo/linux-pm.git
> - branch: 4.0-rc1-prcm-cleanup-v4

Boots for me also for 2430-sdp.

But for dm8168-evm, it fails early on, see below.

Regards,

Tony

[    0.000000] TI816X ES1.1 (neon )
[    0.000000] Unable to handle kernel NULL pointer dereference at virtual address 00000514
[    0.000000] pgd = c0004000
[    0.000000] [00000514] *pgd=00000000
[    0.000000] Internal error: Oops: 5 [#1] SMP ARM
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.0.0-rc4-next-20150318-00040-gc5b9bf4 #291
[    0.000000] Hardware name: Generic ti816x (Flattened Device Tree)
[    0.000000] task: c08c2048 ti: c08bc000 task.ti: c08bc000
[    0.000000] PC is at am33xx_clkdm_wakeup+0x18/0x3c
[    0.000000] LR is at clkdm_wakeup_nolock+0x48/0x68
[    0.000000] pc : [<c0030f4c>]    lr : [<c0033918>]    psr: a0000193
[    0.000000] sp : c08bdf30  ip : c094f528  fp : c076d94c
[    0.000000] r10: 80000200  r9 : c08c38dc  r8 : c08c38dc
[    0.000000] r7 : c112d444  r6 : c094f69c  r5 : c08cdba8  r4 : c08cf1c8
[    0.000000] r3 : 00000014  r2 : 00000514  r1 : 00000514  r0 : c08cf1c8
[    0.000000] Flags: NzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
[    0.000000] Control: 10c5387d  Table: 80004019  DAC: 00000015
[    0.000000] Process swapper (pid: 0, stack limit = 0xc08bc218)
[    0.000000] Stack: (0xc08bdf30 to 0xc08be000)
[    0.000000] df20:                                     c08c2048 c08cf1c8 c08cdba8 c0033950
[    0.000000] df40: 00000003 c08cf1c8 c08cdba8 c0033b18 c089df40 2f800000 c08c1d0c c0859fb8
[    0.000000] df60: c0859f8c c08544a8 c08bdf78 c08bdf88 c094e8c0 ef7fce80 00000000 00000000
[    0.000000] df80: 00000000 c094e780 00000000 00000000 c076bdb0 c08bdfb4 00000000 00000000
[    0.000000] dfa0: c094e780 ffffffff c08be8c0 00000001 00000000 c094e780 00000000 c085094c
[    0.000000] dfc0: 00000000 00000000 00000000 00000000 00000000 c089f778 c094e994 c08be96c
[    0.000000] dfe0: c089f774 c08c3a04 80004059 413fc082 00000000 80008074 00000000 00000000
[    0.000000] [<c0030f4c>] (am33xx_clkdm_wakeup) from [<c0033918>] (clkdm_wakeup_nolock+0x48/0x68)
[    0.000000] [<c0033918>] (clkdm_wakeup_nolock) from [<c0033950>] (clkdm_wakeup+0x18/0x2c)
[    0.000000] [<c0033950>] (clkdm_wakeup) from [<c0033b18>] (clkdm_complete_init+0xb4/0xf8)
[    0.000000] [<c0033b18>] (clkdm_complete_init) from [<c0859fb8>] (ti816x_init_early+0x2c/0x64)
[    0.000000] [<c0859fb8>] (ti816x_init_early) from [<c08544a8>] (setup_arch+0x8d4/0x9b8)
[    0.000000] [<c08544a8>] (setup_arch) from [<c085094c>] (start_kernel+0x98/0x3e8)
[    0.000000] [<c085094c>] (start_kernel) from [<80008074>] (0x80008074)
[    0.000000] Code: e1d010be e59c2000 e0831001 e0822001 (e5923000) 
[    0.000000] ---[ end trace cb88537fdc8fa200 ]---
[    0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
[    0.000000] ---[ end Kernel panic - not syncing: Attempted to kill the idle task!