TI中文支持网我在am3354上运行android，跑一会就跑死掉，每次都这样，你们有遇到过吗？是什么问题？下面是log:
[ 128.969084] Internal error: Oops – undefined instruction: 0 [#1]
[ 128.975379] Modules linked in: omaplfb(O) pvrsrvkm(O)
[ 128.980675] CPU: 0 Tainted: G O (3.2.0-00245-g9874820-dirty #42)
[ 128.988235] PC is at futex_wake+0xea/0x118
[ 128.992528] LR is at clockevents_program_event+0x78/0x15c
[ 128.998172] pc : [<c007233a>] lr : [<c006fa8c>] psr: 800001b3
[ 128.998177] sp : c3899e2c ip : c3899e20 fp : c3899e5c
[ 129.010175] r10: 00000003 r9 : 0fcf961c r8 : a3be472e
[ 129.015634] r7 : 0000001e r6 : 069d7000 r5 : 00000000 r4 : c07c3e00
[ 129.022455] r3 : c007091a r2 : 00978d4a r1 : 3b9aca00 r0 : c389a00c
[ 129.029280] Flags: Nzcv IRQs off FIQs on Mode SVC_32 ISA Thumb Segment user
[ 129.037011] Control: 10c5387d Table: 8bd9c019 DAC: 00000015
[ 129.043014][ 129.043016] PC: 0xc00722ba:
[ 129.047475] 22b8 e246600c ea000005 e1a03006 e1a00006 e5b3600c e1570003 e246600c 0a00001a
[ 129.056051] 22d8 e370001c 0afffff7 e590201c e51b3030 e1520003 1afffff3 e5902020 e51b302c
[ 129.064625] 22f8 e1520003 1affffef e5902024 e51b3028 e1520003 1affffeb e5903028 e3530000
[ 129.073199] 2318 1a00000e e590302c e3530000 1a00000b e5903034 e1140003 0affffe2 e2888001
[ 129.081773] 2338 ebfffc7b e1580005 baffffde e24b0030 ebfffec1 e1a00008 e24bd020 e89da9f0
[ 129.090348] 2358 e24b0030 e3e08015 ebfffebb eafffff8 e1a0c00d e92dd818 e24cb004 e92d4000
[ 129.098922] 2378 e8bd4000 e1a04000 e2803018 e1932f9f e2422001 e1831f92 e3310000 1afffffa
[ 129.107496] 2398 e3520000 189da818 e5903014 e3530000 0a000009 f10c0080 e890000c e5823004
[ 129.116070] 23b8 e5832000 e5840000 e5840004 f1080080 e2800008 e5941014 eb000898 e1a0200d
[ 129.124646][ 129.124648] LR: 0xc006fa0c:
[ 129.129107] fa0c e1c421f0 e89da818 e1a0c00d e92dd9f0 e24cb004 e24dd00c e92d4000 e8bd4000
[ 129.137681] fa2c e1a06002 e1a07003 e3560000 e2d71000 e1a04000 e5db5004 ba00003c e5901030
[ 129.146255] fa4c e5802010 e3510001 e5803014 03a00000 0a000027 e5941034 e3110004 1a000026
[ 129.154829] fa6c e24b002c ebffec4e e14b22dc e0562002 e0c73003 e3520001 e2d3c000 fa000024
[ 129.163404] fa8c e1c401d8 e594e028 e1520000 e0d3c001 e594c02c e5948004 b1a00002 b1a01003
[ 129.171977] faac e1c422d0 e1a06000 e1a07001 e1560002 e0d71003 e1a01004 b1a06002 b1a07003
[ 129.180552] facc e0832e96 e25c0020 e26c6020 e023379e e1a0cc32 e18cc613 41a0000c 51a00033
[ 129.189126] faec e12fff38 e3500000 0a000001 e3550000 1a00000b e24bd020 e89da9f0 e594c008
[ 129.197701][ 129.197704] SP: 0xc3899dac:
[ 129.202162] 9dac c007091a c07c3e00 00000000 069d7000 0000001e a3be472e 0fcf961c 00000003
[ 129.210736] 9dcc c3899e5c c3899e20 c3899e2c c006fa8c c007233a 800001b3 ffffffff 00031cd8
[ 129.219311] 9dec 00000000 0081b1d1 00000000 38a0e2b6 00000000 c026b67c c07c3e00 00000000
[ 129.227885] 9e0c 069d7000 0000001e a3be472e 0fcf961c 00000003 00978d4a 00000000 c3899e20
[ 129.236459] 9e2c c007091a 0605e2b6 0000001e 00000001 069d7000 0000001e c07e3c48 00000001
[ 129.245033] 9e4c a3be472e c3899e7c c3899e60 c00701a8 c006fa20 00000000 c07e3c78 c07e3c48
[ 129.253607] 9e6c 00000003 c3899ed4 c3899e80 c00661d0 c0070170 06052130 0000001e 06052130
[ 129.262181] 9e8c 0000001e 069d7000 0000001e 06052130 0000001e a9c3685e 0fcf963a c003c83c
[ 129.270755][ 129.270758] IP: 0xc3899da0:
[ 129.275216] 9da0 c389a00c 3b9aca00 00978d4a c007091a c07c3e00 00000000 069d7000 0000001e
[ 129.283790] 9dc0 a3be472e 0fcf961c 00000003 c3899e5c c3899e20 c3899e2c c006fa8c c007233a
[ 129.292365] 9de0 800001b3 ffffffff 00031cd8 00000000 0081b1d1 00000000 38a0e2b6 00000000
[ 129.300939] 9e00 c026b67c c07c3e00 00000000 069d7000 0000001e a3be472e 0fcf961c 00000003
[ 129.309513] 9e20 00978d4a 00000000 c3899e20 c007091a 0605e2b6 0000001e 00000001 069d7000
[ 129.318087] 9e40 0000001e c07e3c48 00000001 a3be472e c3899e7c c3899e60 c00701a8 c006fa20
[ 129.326661] 9e60 00000000 c07e3c78 c07e3c48 00000003 c3899ed4 c3899e80 c00661d0 c0070170
[ 129.335235] 9e80 06052130 0000001e 06052130 0000001e 069d7000 0000001e 06052130 0000001e
[ 129.343810][ 129.343812] FP: 0xc3899ddc:
[ 129.348271] 9ddc c007233a 800001b3 ffffffff 00031cd8 00000000 0081b1d1 00000000 38a0e2b6
[ 129.356845] 9dfc 00000000 c026b67c c07c3e00 00000000 069d7000 0000001e a3be472e 0fcf961c
[ 129.365419] 9e1c 00000003 00978d4a 00000000 c3899e20 c007091a 0605e2b6 0000001e 00000001
[ 129.373993] 9e3c 069d7000 0000001e c07e3c48 00000001 a3be472e c3899e7c c3899e60 c00701a8
[ 129.382567] 9e5c c006fa20 00000000 c07e3c78 c07e3c48 00000003 c3899ed4 c3899e80 c00661d0
[ 129.391142] 9e7c c0070170 06052130 0000001e 06052130 0000001e 069d7000 0000001e 06052130
[ 129.399716] 9e9c 0000001e a9c3685e 0fcf963a c003c83c c07c3e80 00000044 00000044 c3899fb0
[ 129.408290] 9ebc 5da9c41c 00000000 5c367140 c3899ee4 c3899ed8 c00220a0 c006609c c3899f2c
[ 129.416865][ 129.416867] R0: 0xc3899f8c:
[ 129.421325] 9f8c c0014858 400e7de0 20000030 ffffffff 5af72ecc 00000000 c3899fb0 c05847c0
[ 129.429899] 9fac c0008560 00000e10 0000012e 0000012f 5da9c420 5da9c420 0000012e 5da9c410
[ 129.438474] 9fcc 5af72ecc 5da9c41c 0000012e 5c367140 62ce2a84 40200ef4 62ce29e0 400e7f59
[ 129.447048] 9fec 400e7de0 20000030 ffffffff 00000000 00000000 00000000 00000000 bf000000
[ 129.455622] a00c c3dbee80 c07e17ac 00000000 00000015 c3dbee80 c3e16400 c07e1308 cf3d30c0
[ 129.464197] a02c c389a000 c389be28 cf38b980 c389bda4 c389bd70 c0582a70 00000000 00000000
[ 129.472771] a04c 00000000 00000000 00000000 01010000 00000000 5e509f00 00000000 00000000
[ 129.481344] a06c 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 129.489920][ 129.489922] R3: 0xc007089a:
[ 129.494381] 0898 e51b0018 e51b201c e3043240 e340300f e1a01fc0 e0e10293 eaffffe8 e59f4050
[ 129.502955] 08b8 e5941054 e3510000 1a000001 e1c427d8 eafffff0 e1a00005 e50b2028 e50b302c
[ 129.511530] 08d8 ebff3c97 e51b2028 e51b302c e3500000 0afffff5 e1c405d8 e1c447d8 e0522000
[ 129.520105] 08f8 e0c33001 e0922004 e0a33005 eaffffe1 c07ba0f4 c07e4110 e1a0c00d e92dd800
[ 129.528680] 0918 e24cb004 e92d4000 e8bd4000 e3040110 e34c007e e89da800 e1a0c00d e92ddff0
[ 129.537254] 0938 e24cb004 e24dd03c e92d4000 e8bd4000 e59f3364 e5933000 e50b3048 e10f8000
[ 129.545828] 0958 f10c0080 e3500000 e50b8038 e59f434c 1a000002 e5943040 e3530000 0a000094
[ 129.554403] 0978 e3a08001 e24b0034 e5848040 ebffe889 e51b6034 e51b5030 e3a03000 e1a00003
[ 129.562978] 0998 e58d3000 e1a02006 e59f7310 e1a03005 ebffff34 e5943034 e50b6044 e3530000
[ 129.571552][ 129.571555] R4: 0xc07c3d80:
[ 129.576013] 3d80 cf001188 cf07ff08 00000000 c057324c c057d564 00000000 00000000 00000000
[ 129.584588] 3da0 c06aa460 c0802a68 00000000 00000000 00000000 00000000 c02d7488 c02d74d0
[ 129.593162] 3dc0 00000000 00000000 00000000 00000000 00000000 cf201e40 00000000 00000000
[ 129.601737] 3de0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 129.610310] 3e00 c0066090 c00220a8 00000000 00000000 069d7000 0000001e aaaaab35 00000029
[ 129.618884] 3e20 000003e8 00000000 0624dd2f 00000020 00000003 00000003 00000000 00000000
[ 129.627458] 3e40 c002235c 00000000 00000000 c06aab9c 00000000 00000000 c058d520 c07e40e8
[ 129.636033] 3e60 c07e40e8 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 129.644611] Process Binder_A (pid: 716, stack limit = 0xc38982f0)
[ 129.650979] Stack: (0xc3899e2c to 0xc389a000)
[ 129.655533] 9e20: c007091a 0605e2b6 0000001e 00000001 069d7000
[ 129.664085] 9e40: 0000001e c07e3c48 00000001 a3be472e c3899e7c c3899e60 c00701a8 c006fa20
[ 129.672636] 9e60: 00000000 c07e3c78 c07e3c48 00000003 c3899ed4 c3899e80 c00661d0 c0070170
[ 129.681188] 9e80: 06052130 0000001e 06052130 0000001e 069d7000 0000001e 06052130 0000001e
[ 129.689739] 9ea0: a9c3685e 0fcf963a c003c83c c07c3e80 00000044 00000044 c3899fb0 5da9c41c
[ 129.698290] 9ec0: 00000000 5c367140 c3899ee4 c3899ed8 c00220a0 c006609c c3899f2c c3899ee8
[ 129.706841] 9ee0: c007fba8 c0022070 00000009 00000395 00000000 c07e67c0 c07e6768 00000000
[ 129.715393] 9f00: c3899f4c c07e6768 00000044 00000000 c3899fb0 5da9c41c 0000012e 5c367140
[ 129.723944] 9f20: c3899f44 c3899f30 c007fe10 c007fb40 00020000 c07e6768 c3899f5c c3899f48
[ 129.732496] 9f40: c0081df4 c007fde4 c0081d64 c07fc5a4 c3899f6c c3899f60 c007f46c c0081d70
[ 129.741047] 9f60: c3899f8c c3899f70 c001488c c007f43c 00000002 00000004 fa200000 00000044
[ 129.749599] 9f80: c3899fac c3899f90 c00085dc c0014858 400e7de0 20000030 ffffffff 5af72ecc
[ 129.758150] 9fa0: 00000000 c3899fb0 c05847c0 c0008560 00000e10 0000012e 0000012f 5da9c420
[ 129.766701] 9fc0: 5da9c420 0000012e 5da9c410 5af72ecc 5da9c41c 0000012e 5c367140 62ce2a84
[ 129.775252] 9fe0: 40200ef4 62ce29e0 400e7f59 400e7de0 20000030 ffffffff 00000000 00000000
[ 129.783799] Backtrace:[ 129.786365] [<c006fa14>] (clockevents_program_event+0x0/0x15c) from [<c00701a8>] (tick_program_event+0x44/0x4c)
[ 129.796912] r8:a3be472e r7:00000001 r6:c07e3c48 r5:0000001e r4:069d7000
[ 129.803940] [<c0070164>] (tick_program_event+0x0/0x4c) from [<c00661d0>] (hrtimer_interrupt+0x140/0x25c)
[ 129.813850] r5:00000003 r4:c07e3c48
[ 129.817600] [<c0066090>] (hrtimer_interrupt+0x0/0x25c) from [<c00220a0>] (omap2_gp_timer_interrupt+0x3c/0x44)
[ 129.827973] [<c0022064>] (omap2_gp_timer_interrupt+0x0/0x44) from [<c007fba8>] (handle_irq_event_percpu+0x74/0x2a4)
[ 129.838888] [<c007fb34>] (handle_irq_event_percpu+0x0/0x2a4) from [<c007fe10>] (handle_irq_event+0x38/0x48)
[ 129.849078] [<c007fdd8>] (handle_irq_event+0x0/0x48) from [<c0081df4>] (handle_level_irq+0x90/0x114)
[ 129.858624] r4:c07e6768 r3:00020000
[ 129.862368] [<c0081d64>] (handle_level_irq+0x0/0x114) from [<c007f46c>] (generic_handle_irq+0x3c/0x50)
[ 129.872096] r4:c07fc5a4 r3:c0081d64
[ 129.875851] [<c007f430>] (generic_handle_irq+0x0/0x50) from [<c001488c>] (handle_IRQ+0x40/0x94)
[ 129.884949] [<c001484c>] (handle_IRQ+0x0/0x94) from [<c00085dc>] (omap3_intc_handle_irq+0x88/0x90)
[ 129.894313] r6:00000044 r5:fa200000 r4:00000004 r3:00000002
[ 129.900256] [<c0008554>] (omap3_intc_handle_irq+0x0/0x90) from [<c05847c0>] (__irq_usr+0x40/0x60)
[ 129.909531] Exception stack(0xc3899fb0 to 0xc3899ff8)
[ 129.914809] 9fa0: 00000e10 0000012e 0000012f 5da9c420
[ 129.923360] 9fc0: 5da9c420 0000012e 5da9c410 5af72ecc 5da9c41c 0000012e 5c367140 62ce2a84
[ 129.931910] 9fe0: 40200ef4 62ce29e0 400e7f59 400e7de0 20000030 ffffffff
[ 129.938820] r7:5af72ecc r6:ffffffff r5:20000030 r4:400e7de0
[ 129.944750] Code: 0aff 8001 e288 fc7b (ebff) 0005[ 129.949828] —[ end trace a0d2df81ed6acea3 ]—
[ 129.954654] Kernel panic – not syncing: Fatal exception in interrupt
[ 129.961292] Backtrace:[ 129.963859] [<c00176e8>] (dump_backtrace+0x0/0x114) from [<c057e8c4>] (dump_stack+0x20/0x24)
[ 129.972679] r6:00000001 r5:00000000 r4:c08263d8 r3:c07e18a0
[ 129.978613] [<c057e8a4>] (dump_stack+0x0/0x24) from [<c057eb34>] (panic+0x6c/0x190)
[ 129.986620] [<c057eac8>] (panic+0x0/0x190) from [<c0017a34>] (die+0x130/0x2a8)
[ 129.994167] r3:00010000 r2:00007cf9 r1:00000000 r0:c06a82dc
[ 130.000094] r7:00000002
[ 130.002743] [<c0017904>] (die+0x0/0x2a8) from [<c0017bd4>] (arm_notify_die+0x28/0x60)
[ 130.010932] [<c0017bac>] (arm_notify_die+0x0/0x60) from [<c0008334>] (do_undefinstr+0x134/0x154)
[ 130.020123] [<c0008200>] (do_undefinstr+0x0/0x154) from [<c05846a8>] (__und_svc+0x48/0x60)
[ 130.028763] Exception stack(0xc3899da0 to 0xc3899de8)
[ 130.034043] 9da0: c389a00c 3b9aca00 00978d4a c007091a c07c3e00 00000000 069d7000 0000001e
[ 130.042593] 9dc0: a3be472e 0fcf961c 00000003 c3899e5c c3899e20 c3899e2c c006fa8c c007233a
[ 130.051142] 9de0: 800001b3 ffffffff
[ 130.054782] r7:00000000 r6:c0584914 r5:800001b3 r4:c007233c
[ 130.060721] [<c006fa14>] (clockevents_program_event+0x0/0x15c) from [<c00701a8>] (tick_program_event+0x44/0x4c)
[ 130.071266] r8:a3be472e r7:00000001 r6:c07e3c48 r5:0000001e r4:069d7000
[ 130.078294] [<c0070164>] (tick_program_event+0x0/0x4c) from [<c00661d0>] (hrtimer_interrupt+0x140/0x25c)
[ 130.088203] r5:00000003 r4:c07e3c48
[ 130.091947] [<c0066090>] (hrtimer_interrupt+0x0/0x25c) from [<c00220a0>] (omap2_gp_timer_interrupt+0x3c/0x44)
[ 130.102319] [<c0022064>] (omap2_gp_timer_interrupt+0x0/0x44) from [<c007fba8>] (handle_irq_event_percpu+0x74/0x2a4)
[ 130.113235] [<c007fb34>] (handle_irq_event_percpu+0x0/0x2a4) from [<c007fe10>] (handle_irq_event+0x38/0x48)
[ 130.123422] [<c007fdd8>] (handle_irq_event+0x0/0x48) from [<c0081df4>] (handle_level_irq+0x90/0x114)
[ 130.132969] r4:c07e6768 r3:00020000
[ 130.136713] [<c0081d64>] (handle_level_irq+0x0/0x114) from [<c007f46c>] (generic_handle_irq+0x3c/0x50)
[ 130.146441] r4:c07fc5a4 r3:c0081d64
[ 130.150186] [<c007f430>] (generic_handle_irq+0x0/0x50) from [<c001488c>] (handle_IRQ+0x40/0x94)
[ 130.159286] [<c001484c>] (handle_IRQ+0x0/0x94) from [<c00085dc>] (omap3_intc_handle_irq+0x88/0x90)
[ 130.168649] r6:00000044 r5:fa200000 r4:00000004 r3:00000002
[ 130.174581] [<c0008554>] (omap3_intc_handle_irq+0x0/0x90) from [<c05847c0>] (__irq_usr+0x40/0x60)
[ 130.183857] Exception stack(0xc3899fb0 to 0xc3899ff8)
[ 130.189135] 9fa0: 00000e10 0000012e 0000012f 5da9c420
[ 130.197687] 9fc0: 5da9c420 0000012e 5da9c410 5af72ecc 5da9c41c 0000012e 5c367140 62ce2a84
[ 130.206237] 9fe0: 40200ef4 62ce29e0 400e7f59 400e7de0 20000030 ffffffff
[ 130.213149] r7:5af72ecc r6:ffffffff r5:20000030 r4:400e7de0
Steven Liu1：
你用的android的版本是哪个？硬件平台？（是在TI的EVM板上面进行测试的吗？）
x m：
回复 Steven Liu1:
android是ti官网上的：TI_Android_JB_4.2.2_DevKit_4.1.1。硬件平台是用am3354自己做的板子, ddr3:MT41J128M16JT-125, 电源：TPS65910A3，nand:MT29F2G08
Steven Liu1：
回复 x m:
只是单纯的跑android系统就会死吗？还是跑了你写了测试应用之类的东西？
自己做的板子的话，需要排查的因素有很多的，硬件方面，会不会是DDR不稳定带来的问题：ddr3的配置是否正确，有没有做过software leveling？软件上做移植的时候，因为肯定要去掉EEPROM做配置，是否会在配置的时候，有些没有正确配置，或者修改误删了某些必要的配置。
x m：
回复 Steven Liu1:
steven 谢谢！
1. 我使用的DDR3的配制，你们有做过吗？有的话，能否发一个给我？
2. 什么叫software leveling? 要怎么做？
3. EEPROM配置，我现在是写的死到程序里的。不用配置了。
Steven Liu1：
回复 x m:
1. 这个配置有些是根据自己的layout参数得来的，除非照抄原版，layout都一样，配置才可能一样。否则，一定是要自己配置的。
2. 对于DDR3的配置，我们是要求一定要做software leveling的，关于这部分内容你可以参考这两个帖子，里面讲述的比较详细：
http://www.deyisupport.com/question_answer/dsp_arm/sitara_arm/f/25/t/17684.aspx
http://www.deyisupport.com/question_answer/dsp_arm/sitara_arm/f/25/t/30143.aspx
3. 是的，我的意思是说，EEPROM上面存储的板子不同ID信息，其对应的是不同的硬件相关的配置信息：有的有nand配置，有的没有；有的是DDR2的配置，有的则是DDR3的配置。你写死了之后，要注意当前使用的配置信息，和你硬件板上面的资源是对应的才可以。
Yaoming Qin：
回复 x m:
x m
android是ti官网上的：TI_Android_JB_4.2.2_DevKit_4.1.1。硬件平台是用am3354自己做的板子, ddr3:MT41J128M16JT-125, 电源：TPS65910A3，nand:MT29F2G08
wenyuan zhou1：
回复 Steven Liu1:
你好，根据您提供的两个文件，我分别下载并阅读了这两个文档，不过，个人觉得这个两个文档描述的太过简单，因而还有几个地方不是很懂：
1、文档中说，先根据板子上的CK和DQS实际的走线长度，计算出Seed Values。这个基本了解，目前我们使用的DDR3为DDR3-1600（11-11-11），主频是不是就填1600MHZ？根据实际走线，求出平均长度DDR_CK trace=1.005，DDR_DQSx trace=0.8844。这样可以自行算出WR DQS_SLAVE_RATIO=88，RD DQS_SLAVE_RATIO=40，FIFO_WE_SLAVE_RATIO=18C。
2、SW Leveling的第二步Load DDR3_slave_ratio_search_auto.out and run the code，这个有点突兀，没有前因后果，不知道文件DDR3_slave_ratio_search_auto.out是指哪里的文件，里面内容是什么？run the code更加不知道在说什么，在什么软件环境下，用哪个软件运行哪个代码？后面也没有详细交代。
3、再后面出来了Optimum Value，这个信息是串口打印信息么？这些信息如何出来的？获得的这些优化值，最后要用到什么地方，去修改哪些文件的配置定义？
4、目前我们系统有两种，一种是单纯的LINUX系统，一种是android系统。针对这两个系统，在做SW LEVELing以后，需要修改哪些文件和配置？
5、在uboot下，用mtest测试时，一直可以看到pattern 0000XXXX Writing… Reading…，是不是代表测试DDR3内存OK？
x m：
回复 Yaoming Qin:
秦工：我们用的PMIC是tps65910 A31A1
Yaoming Qin：
回复 x m:
我给了您一个连接，可以一起参考下，这个片子是OK的
Yaoming Qin：
回复 wenyuan zhou1:
关于您的问题，回答如下：
1. 这里的主频是指您所需要DDR3跑的主频，AM335x最高支持到400MHz，所以最多可以设置为400MHz.
2. 关于这个software leveling 的工具，具体情况可以参考
http://processors.wiki.ti.com/index.php/AM335x_DDR_PHY_register_configuration_for_DDR3_using_Software_Leveling
http://processors.wiki.ti.com/index.php/AM335x_EMIF_Configuration_tips
以上两个是原始的说明，下面我的同事给出的是更本地化的说明。
如果您没有jtag工具，也可以参考http://www.deyisupport.com/question_answer/dsp_arm/sitara_arm/f/25/t/53263.aspx 中的MLO工具，可以在sd卡上运行，从而跑下software leveling.
3. 如果您根据工具跑出来的值，就是用于配置DDR的寄存器的值，可以根据两个deyisupprt的文档，写到uboot中去，这个需要贵司的软件工程师帮忙。
4. 同第三点，您可以参考 http://www.deyisupport.com/question_answer/dsp_arm/sitara_arm/f/25/t/30143.aspx中pdf文档的第4页。
5. ddr的稳定性，最好能把系统跑起来后压力测试才能最终确定，目前您所反馈的问题来看，很可能是ddr稳定性的问题。
