With DT-based boot, the GPMC OneNAND sync mode setup does not work
correctly. During the async mode setup, sync flags gets incorrectly
set in the onenand_async data and the system crashes during the async
setup. Also, the sync mode never gets set in gpmc_onenand_data->flags, so
even without the crash, the actual sync mode setup would never be called.
The patch fixes this by adjusting the gpmc_onenand_data->flags when the
data is read from the DT. Also while doing this we force the onenand_async
to be always async.
The patch enables to use the following DTS chunk (that should correspond
the arch/arm/mach-omap2/board-rm680.c board file setup) with Nokia N950,
which currently crashes with 3.12-rc1. The crash output can be also
found below.
&gpmc {
ranges = <0 0 0x04000000 0x20000000>;
onenand@0,0 {
#address-cells = <1>;
#size-cells = <1>;
reg = <0 0 0x20000000>;
gpmc,sync-read;
gpmc,sync-write;
gpmc,burst-length = <16>;
gpmc,burst-read;
gpmc,burst-wrap;
gpmc,burst-write;
gpmc,device-width = <2>;
gpmc,mux-add-data = <2>;
gpmc,cs-on-ns = <0>;
gpmc,cs-rd-off-ns = <87>;
gpmc,cs-wr-off-ns = <87>;
gpmc,adv-on-ns = <0>;
gpmc,adv-rd-off-ns = <10>;
gpmc,adv-wr-off-ns = <10>;
gpmc,oe-on-ns = <15>;
gpmc,oe-off-ns = <87>;
gpmc,we-on-ns = <0>;
gpmc,we-off-ns = <87>;
gpmc,rd-cycle-ns = <112>;
gpmc,wr-cycle-ns = <112>;
gpmc,access-ns = <81>;
gpmc,page-burst-access-ns = <15>;
gpmc,bus-turnaround-ns = <0>;
gpmc,cycle2cycle-delay-ns = <0>;
gpmc,wait-monitoring-ns = <0>;
gpmc,clk-activation-ns = <5>;
gpmc,wr-data-mux-bus-ns = <30>;
gpmc,wr-access-ns = <81>;
gpmc,sync-clk-ps = <15000>;
};
};
[ 1.467559] GPMC CS0: cs_on : 0 ticks, 0 ns (was 0 ticks) 0 ns
[ 1.474822] GPMC CS0: cs_rd_off : 1 ticks, 5 ns (was 24 ticks) 5 ns
[ 1.482116] GPMC CS0: cs_wr_off : 14 ticks, 71 ns (was 24 ticks) 71 ns
[ 1.489349] GPMC CS0: adv_on : 0 ticks, 0 ns (was 0 ticks) 0 ns
[ 1.496582] GPMC CS0: adv_rd_off: 3 ticks, 15 ns (was 3 ticks) 15 ns
[ 1.503845] GPMC CS0: adv_wr_off: 3 ticks, 15 ns (was 3 ticks) 15 ns
[ 1.511077] GPMC CS0: oe_on : 3 ticks, 15 ns (was 4 ticks) 15 ns
[ 1.518310] GPMC CS0: oe_off : 1 ticks, 5 ns (was 24 ticks) 5 ns
[ 1.525543] GPMC CS0: we_on : 0 ticks, 0 ns (was 0 ticks) 0 ns
[ 1.532806] GPMC CS0: we_off : 8 ticks, 40 ns (was 24 ticks) 40 ns
[ 1.540039] GPMC CS0: rd_cycle : 4 ticks, 20 ns (was 29 ticks) 20 ns
[ 1.547302] GPMC CS0: wr_cycle : 4 ticks, 20 ns (was 29 ticks) 20 ns
[ 1.554504] GPMC CS0: access : 0 ticks, 0 ns (was 23 ticks) 0 ns
[ 1.561767] GPMC CS0: page_burst_access: 0 ticks, 0 ns (was 3 ticks) 0 ns
[ 1.569641] GPMC CS0: bus_turnaround: 0 ticks, 0 ns (was 0 ticks) 0 ns
[ 1.577270] GPMC CS0: cycle2cycle_delay: 0 ticks, 0 ns (was 0 ticks) 0 ns
[ 1.585144] GPMC CS0: wait_monitoring: 0 ticks, 0 ns (was 0 ticks) 0 ns
[ 1.592834] GPMC CS0: clk_activation: 0 ticks, 0 ns (was 0 ticks) 0 ns
[ 1.600463] GPMC CS0: wr_data_mux_bus: 5 ticks, 25 ns (was 8 ticks) 25 ns
[ 1.608154] GPMC CS0: wr_access : 0 ticks, 0 ns (was 23 ticks) 0 ns
[ 1.615386] GPMC CS0 CLK period is 5 ns (div 1)
[ 1.625122] Unhandled fault: external abort on non-linefetch (0x1008) at 0xf009e442
[ 1.633178] Internal error: : 1008 [#1] ARM
[ 1.637573] Modules linked in:
[ 1.640777] CPU: 0 PID: 1 Comm: swapper Not tainted 3.12.0-rc1-n9xx-los.git-5318619-00006-g4baa700-dirty #26
[ 1.651123] task:
ef04c000 ti:
ef050000 task.ti:
ef050000
[ 1.656799] PC is at gpmc_onenand_setup+0x98/0x1e0
[ 1.661865] LR is at gpmc_cs_set_timings+0x494/0x5a4
[ 1.667083] pc : [<
c002e040>] lr : [<
c001f384>] psr:
60000113
[ 1.667083] sp :
ef051d10 ip :
ef051ce0 fp :
ef051d94
[ 1.679138] r10:
c0caaf60 r9 :
ef050000 r8 :
ef18b32c
[ 1.684631] r7 :
f0080000 r6 :
c0caaf60 r5 :
00000000 r4 :
f009e400
[ 1.691497] r3 :
f009e442 r2 :
80050000 r1 :
00000014 r0 :
00000000
[ 1.698333] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
[ 1.706024] Control:
10c5387d Table:
af290019 DAC:
00000015
[ 1.712066] Process swapper (pid: 1, stack limit = 0xef050240)
[ 1.718200] Stack: (0xef051d10 to 0xef052000)
[ 1.722778] 1d00:
00004000 00001402 00000000 00000005
[ 1.731384] 1d20:
00000047 00000000 0000000f 0000000f 00000000 00000028 0000000f 00000005
[ 1.739990] 1d40:
00000000 00000000 00000014 00000014 00000000 00000000 00000000 00000000
[ 1.748596] 1d60:
00000000 00000019 00000000 00000000 ef18b000 ef099c50 c0c8cb30 00000000
[ 1.757171] 1d80:
c0488074 c048f868 ef051dcc ef051d98 c024447c c002dfb4 00000000 c048f868
[ 1.765777] 1da0:
00000000 00000000 c010e4a4 c0dbbb7c c0c8cb40 00000000 c0ca2500 c0488074
[ 1.774383] 1dc0:
ef051ddc ef051dd0 c01fd508 c0244370 ef051dfc ef051de0 c01fc204 c01fd4f4
[ 1.782989] 1de0:
c0c8cb40 c0ca2500 c0c8cb74 00000000 ef051e1c ef051e00 c01fc3b0 c01fc104
[ 1.791595] 1e00:
ef0983bc 00000000 c0ca2500 c01fc31c ef051e44 ef051e20 c01fa794 c01fc328
[ 1.800201] 1e20:
ef03634c ef0983b0 ef27d534 c0ca2500 ef27d500 c0c9a2f8 ef051e54 ef051e48
[ 1.808807] 1e40:
c01fbcfc c01fa744 ef051e84 ef051e58 c01fb838 c01fbce4 c0411df8 c0caa040
[ 1.817413] 1e60:
ef051e84 c0ca2500 00000006 c0caa040 00000066 c0488074 ef051e9c ef051e88
[ 1.825988] 1e80:
c01fca30 c01fb768 c04975b8 00000006 ef051eac ef051ea0 c01fd728 c01fc9bc
[ 1.834594] 1ea0:
ef051ebc ef051eb0 c048808c c01fd6e4 ef051f4c ef051ec0 c0008888 c0488080
[ 1.843200] 1ec0:
0000006f c046bae8 00000000 00000000 ef051efc ef051ee0 ef051f04 ef051ee8
[ 1.851806] 1ee0:
c046d400 c0181218 c046d410 c18da8d5 c036a8e4 00000066 ef051f4c ef051f08
[ 1.860412] 1f00:
c004b9a8 c046d41c c048f840 00000006 00000006 c046b488 00000000 c043ec08
[ 1.869018] 1f20:
ef051f4c c04975b8 00000006 c0caa040 00000066 c046d410 c048f85c c048f868
[ 1.877593] 1f40:
ef051f94 ef051f50 c046db8c c00087a0 00000006 00000006 c046d410 ffffffff
[ 1.886199] 1f60:
ffffffff ffffffff ffffffff 00000000 c0348fd0 00000000 00000000 00000000
[ 1.894805] 1f80:
00000000 00000000 ef051fac ef051f98 c0348fe0 c046daa8 00000000 00000000
[ 1.903411] 1fa0:
00000000 ef051fb0 c000e7f8 c0348fdc 00000000 00000000 00000000 00000000
[ 1.912017] 1fc0:
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 1.920623] 1fe0:
00000000 00000000 00000000 00000000 00000013 00000000 ffffffff ffffffff
[ 1.929199] Backtrace:
[ 1.931793] [<
c002dfa8>] (gpmc_onenand_setup+0x0/0x1e0) from [<
c024447c>] (omap2_onenand_probe+0x118/0x49c)
[ 1.942047] [<
c0244364>] (omap2_onenand_probe+0x0/0x49c) from [<
c01fd508>] (platform_drv_probe+0x20/0x24)
[ 1.952117] r8:
c0488074 r7:
c0ca2500 r6:
00000000 r5:
c0c8cb40 r4:
c0dbbb7c
[ 1.959197] [<
c01fd4e8>] (platform_drv_probe+0x0/0x24) from [<
c01fc204>] (driver_probe_device+0x10c/0x224)
[ 1.969360] [<
c01fc0f8>] (driver_probe_device+0x0/0x224) from [<
c01fc3b0>] (__driver_attach+0x94/0x98)
[ 1.979125] r7:
00000000 r6:
c0c8cb74 r5:
c0ca2500 r4:
c0c8cb40
[ 1.985107] [<
c01fc31c>] (__driver_attach+0x0/0x98) from [<
c01fa794>] (bus_for_each_dev+0x5c/0x90)
[ 1.994506] r6:
c01fc31c r5:
c0ca2500 r4:
00000000 r3:
ef0983bc
[ 2.000488] [<
c01fa738>] (bus_for_each_dev+0x0/0x90) from [<
c01fbcfc>] (driver_attach+0x24/0x28)
[ 2.009735] r6:
c0c9a2f8 r5:
ef27d500 r4:
c0ca2500
[ 2.014587] [<
c01fbcd8>] (driver_attach+0x0/0x28) from [<
c01fb838>] (bus_add_driver+0xdc/0x260)
[ 2.023742] [<
c01fb75c>] (bus_add_driver+0x0/0x260) from [<
c01fca30>] (driver_register+0x80/0xfc)
[ 2.033081] r8:
c0488074 r7:
00000066 r6:
c0caa040 r5:
00000006 r4:
c0ca2500
[ 2.040161] [<
c01fc9b0>] (driver_register+0x0/0xfc) from [<
c01fd728>] (__platform_driver_register+0x50/0x64)
[ 2.050476] r5:
00000006 r4:
c04975b8
[ 2.054260] [<
c01fd6d8>] (__platform_driver_register+0x0/0x64) from [<
c048808c>] (omap2_onenand_driver_init+0x18/0x20)
[ 2.065490] [<
c0488074>] (omap2_onenand_driver_init+0x0/0x20) from [<
c0008888>] (do_one_initcall+0xf4/0x150)
[ 2.075836] [<
c0008794>] (do_one_initcall+0x0/0x150) from [<
c046db8c>] (kernel_init_freeable+0xf0/0x1b4)
[ 2.085815] [<
c046da9c>] (kernel_init_freeable+0x0/0x1b4) from [<
c0348fe0>] (kernel_init+0x10/0xec)
[ 2.095336] [<
c0348fd0>] (kernel_init+0x0/0xec) from [<
c000e7f8>] (ret_from_fork+0x14/0x3c)
[ 2.104125] r4:
00000000 r3:
00000000
[ 2.107879] Code:
ebffc3ae e2505000 ba00002e e2843042 (
e1d320b0)
[ 2.114318] ---[ end trace
b8ee3e3e5e002451 ]---
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Tony Lindgren <tony@atomide.com>