这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

bugfix · 2018-01-19 19:42:44

1号板，uboot开机logo偶尔可以显示, 输出完下面就没有然后了:

DRAM: 64 MiB
Trying to boot from sunxi SPI
U-Boot 2017.01-rc2-00075-gec3f3ba-dirty (Jan 19 2018 - 14:40:16 +0800) Allwinner Technology
CPU: Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM: 64 MiB
MMC: SUNXI SD/MMC: 0
SF: Detected w25q256 with page size 256 Bytes, erase size 4 KiB, total 32 MiB
*** Warning - bad CRC, using default environment
Error compiling regex: RE is too long (code overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (code overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Error compiling regex: RE is too long (data overflow)
Setting up a 800x480 lcd console (overscan 0x0)

bugfix · 2018-01-19 19:55:33

2号板子,每次都能显示u-boot的logo,输出完下面的就没有然后了：

U-Boot SPL 2017.01-rc2-00075-gec3f3ba-dirty (Jan 19 2018 - 14:40:16)
DRAM: 64 MiB
Trying to boot from sunxi SPI
U-Boot 2017.01-rc2-00075-gec3f3ba-dirty (Jan 19 2018 - 14:40:16 +0800) Allwinner Technology
CPU: Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM: 64 MiB
MMC: SUNXI SD/MMC: 0
SF: Detected w25q256 with page size 256 Bytes, erase size 4 KiB, total 32 MiB
*** Warning - bad CRC, using default environment
Setting up a 800x480 lcd console (overscan 0x0)
dotclock: 33000kHz = 33000kHz: (1 * 3MHz * 66) / 6
In: serial@01c28000
Out: serial@01c28000
Err: serial@01c28000

U-Boot 2017.01-rc2-00075-gec3f3ba-dirty (Jan 19 2018 - 14:40:16 +0800) Allwinner Technology
CPU: Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM: 64 MiB
MMC: SUNXI SD/MMC: 0
SF: Detected w25q256 with page size 256 Bytes, erase size 4 KiB, total 32 MiB
*** Warning - bad CRC, using default environment
Setting up a 800x480 lcd console (overscan 0x0)
dotclock: 33000kHz = 33000kHz: (1 * 3MHz * 66) / 6
In: serial@01c28000
Out: serial@01c28000
Err: serial@01c28000
Net: phy interface0
eth0: ethernet@1c30000
starting USB...
No controllers found
Hit any key to stop autoboot: 0
=> MC: SUNXI SD/MMC: 0
Unknown command 'MC:' - try 'help'
=>
Unknown command 'MC:' - try 'help'
=> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page size 256 0> MC: SUNXI SD/MMC: >> SF: Detected w25q256 with page siz

bugfix · 2018-01-19 20:03:08

3号板子u-boot启动信息都显示不全：

U-Boot SPL 2017.01-rc2-00075-gec3f3ba-dirty (Jan 16 2018 - 15:46:55)
DRAM: 64 MiB
SPL: Unsupported Boot Device!
SPL: failed to boot from all boot devices
### ERROR ### Please RESET th
U-Boot SPL 2017.01-rc2-00075-gec3f3ba-dirty (Jan 16 2018 - 15:46:55)
DRAM: 64 MiB
SPL: Unsupported Boot Device!
SPL: failed to boot from all boot devices
### ERROR ### Please RESET th
U-Boot SPL 2017.01-rc2-00075-gec3f3ba-dirty (Jan 16 2018 - 15:46:55)
DRAM: 64 MiB
SPL: Unsupported Boot Device!
SPL: failed to boot from all boot devices
### ERROR ### Please RES
U-Boot SPL 2017.01-rc2-00075-gec3f3ba-dirty (Jan 16 2018 - 15:46:55)
DRAM: 64 MiB
Trying to boot from sunxi SPI-------
U-Boot SPL 2017.01-rc2-00075-gec3f3ba-dirty (Jan 16 2018 - 15:46:55)
DRAM: 64 MiB
U-Boot SPL 2017.01-rc2-00075-gec3f3ba-dirty (Jan 16 2018 - 15:46:55)
DRAM: 64 MiB
SPL: Unsupported Boot Device!
SPL: failed to boot from all boot devices
### ERROR ### Please RESET t

bugfix · 2018-01-19 20:16:17

4号一直乱码：

U-Boot SPL 2017.01-rc2-00075-gec3f3ba-dirty (Jan 19 2018 - 14:40:16)
DRAM: 64 MiB
Trying to boot from sunxi SPI
U-Boot 2017.01-rc2-00075-gec3f3ba-dirty (Jan 19 2018 - 14:40:16 +0800) Allwinner Technology
CPU: Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM: 64 MiB
MMC: SUNXI SD/MMC: 0
SF: Detected w25q256 with page size 256 Bytes, erase size 4 KiB, total 32 MiB
*** Warning - bad CRC, using default environment
Setting up a 800x480 lcd console (overscan 0x0)
dotclock: 33000kHz = 33000kHz: (1 * 3MHz * 66) / 6
In: serial@01c28000
Out: serial@01c28000
Err: serial@01c28000

U-Boot 2017.01-rc2-00075-gec3f3ba-dirty (Jan 19 2018 - 14:40:16 +0800) Allwinner Technology
CPU: Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM: 64 MiB
MMC: SUNXI SD/MMC: 0
SF: Detected w25q256 with page size 256 Bytes, erase size 4 KiB, total 32 MiB
*** Warning - bad CRC, using default environment
Setting up a 800x480 lcd console (overscan 0x0)
dotclock: 33000kHz = 33000kHz: (1 * 3MHz * 66) / 6
In: serial@01c28000
Out: serial@01c28000
Err: serial@01c28000
Net: phy interface0
eth0: ethernet@1c30000
starting USB...
No controllers found
Hit any key to stop autoboot: 0 0
=> MC: SUNXI SD/MMC: 0SF: Detected w獖瑟?翰ゲ巡〔伈偛叢丮C: 歁C: C: 镸C: 昅C: 丮C: 扢C: 狹C: 睲C: 偛MC: S偛MC: (偛MC: '偛MC: H偛MC: 悅睲C: 偛MC: S偛MC: U偛MC: N偛MC: X偛MC: I偛MC: 偛MC: S偛MC: 睲C: S睲C: S睲C: (睲C: '睲C: H睲C: 槻MC: S睲C: F睲C: :睲C: 睲C: D睲C: e睲C: t睲C: 巡MC: 暡MC: 懖MC: 伈MC: 翰MC: ┎MC: S睲C: 柌MC: N睲C: M睲C: 睲C: !睲C: 7睲C: 6睲C: B睲C: 椴MC: '睲C: M睲C: `睲C: 膊MC: 俨MC: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: B睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: B睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: !睲C: 睲C: 璨MC: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 炔MC: 睲C: 睲C: 睲C: !睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: B睲C: 睲C: 睲C: 睲C: 埐MC: 睲C: 劜MC: 睲C: 炔MC: 睲C: 睲C: 埐MC: 睲C: B睲C: 睲C: B睲C: 睲C: 璨MC: 睲C: !睲C: 睲C: 璨MC: 睲C: B睲C: 睲C: 牟MC: !睲C: 睲C: 睲C: 睲C: N睲C: [睲C: j睲C: 敳MC: '睲C: H睲C: B睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 埐MC: 膊MC: j睲C: 敳MC: '睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 璨MC: z睲C: 俨MC: M睲C: 睲C: 睲C: 睲C: 睲C: O睲C: [睲C: j睲C: 敳MC: '睲C: H睲C: 睲C: 睲C: 睲C: H睲C: 睲C: B睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 璨MC: B睲C: 劜MC: 睲C: 睲C: 睲C: 睲C: 埐MC: 睲C: B睲C: 劜MC: 睲C: 睲C: 睲C: B睲C: 睲C: 璨MC: 睲C: 劜MC: 睲C: 睲C: 炔MC: !睲C: 睲C: 睲C: $睲C: J睲C: 睲C: MC: 睲C: 睲C: 睲C: 睲C: B睲C: 膊MC: M睲C: 睲C: 睲C: 睲C: 埐MC: 睲C: 炔MC: 膊MC: M睲C: C睲C: 睲C: 睲C: $睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 璨MC: 睲C: 睲C: B睲C: 劜MC: 睲C: 睲C: 璨MC: 睲C: B睲C: 膊MC: M睲C: 睲C: 睲C: 睲C: L睲C: 睲C: 炔MC: 膊MC: M睲C: C睲C: :睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 璨MC: B睲C: 睲C: 睲C: 睲C: B睲C: 睲C: 睲C: 睲C: 睲C: 睲C: 虏MC: 睲C: 璨MC: 膊MC: M睲C: 貌MC: B睲貌MC: 睲貌MC: 睲貌MC: B睲貌MC: 睲貌MC: 睲貌MC: 璨M貌MC: b睲貌MC: %睲貌MC: k睲貌MC: 5睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 璨M貌MC: 睲貌MC: 炔M貌MC: !睲貌MC: 睲貌MC: 睲貌MC: 劜M貌MC: 睲貌MC: 璨M貌MC: 睲貌MC: H睲貌MC: 湶M貌MC: 恫M貌MC: S睲貌MC: (睲貌MC: '睲貌MC: H睲貌MC: 惒M貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: O睲貌MC: 鄄M貌MC: 劜M貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 璨M貌MC: B睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: O睲貌MC: 睲貌MC: B睲貌MC: 睲貌MC: 炔M貌MC: 睲貌MC: l睲貌MC: S睲貌MC: 8睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 璨M貌MC: 膊M貌MC: 睲貌MC: 睲貌MC: 埐M貌MC: 睲貌MC: 睲貌MC: 劜M貌MC: 睲貌MC: 劜M貌MC: 睲貌MC: B睲貌MC: 睲貌MC: 睲貌MC: O睲貌MC: 膊M貌MC: 睲貌MC: 睲貌MC: H睲貌MC: 睲貌MC: 炔M貌MC: 膊M貌MC: M睲貌MC: 貌M貌MC: 膊M貌MC: M睲貌MC: C睲貌MC: B睲貌MC: 劜M貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: B睲貌MC: 璨M貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: 睲貌MC: ?睲貌MC: 睲貌MC: 璨M貌MC: 睲貌MC: 劜M貌MC: 膊M貌MC: M睲貌MC: 貌M貌MC:
Unknown command '劜M? - try 'help'
=> ?B?$?J?[?j?滈堕S?(?'???????勯???'???????B???勯????栝?蜷J蜷蜷 B蜷轵?*?栭殚? ! ? B ? ￠块 ? 锽糸蜷圝_=B? *?栭/! ( B ? ￠鄤圞 ?勯B糸 ?? 圝_=B H *?栭鐸Q$H ? ? ? B ￠鄤 (X=(}zH? 圝_=B HH┵%Y=zRT? ??H ? B ↓ 鄤 (X=(}zH? 鼒J_=B HH┵%鵒絉T? ?B  B ? 鄤 (X=(}!H 鼒J_=B~HH┵%鵒絉T !"H 劜M盲u ?  B ? 帼 ?X=(}!H 鼒=B~HH┵%鵒絉T 琚H慚盲 ! B  帼 ? ?X=(}!H??B?W)O絉B =4RdS8i夵 ! B ?饎睲盲 B ? 帼 ?X=(}!H 鼒睲盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒瑒睲盲 B ? 帼 ?X=(}!H 鼒=劜M盲 B ? 帼 ?X=(}!H 鼒(劜M盲 B ? 帼 ?X=(}!H 鼒}劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒!劜M盲 B ? 帼 ?X=(}!H 鼒H劜M盲 B ? 帼 ?X=(}!H 鼒瑒睲盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒鍎睲盲 B ? 帼 ?X=(}!H 鼒!劜M盲 B ? 帼 ?X=(}!H 鼒劜M盲 B ? 帼 ?X=(}!H 鼒K劜M盲 B ? 帼 ?X=(}!H 鼒U劜M盲 B ? 帼 ?X=(}!H 鼒?劜M盲 B ? 帼 ?X=(}!H 鼒?劜M盲 B ? 帼 ?X=(}!H 鼒?劜M盲 B ? 帼 ?X=(}!H 鼒%劜M盲 B ? 帼 ?X=(}!H 鼒
Unknown command '劜M? - try 'help'
=> !? ?NZb? ? B ? ! ? B > !? ?NZb? ?麭 B ? ! ? !H凚 > !? ?NZb? !H? ?麭? B 鼊 B? !H? ?I!H H ?*NZb? R?漫 ?????h?B?傀?$?匎? ??B? ? ?侢恂匎 ? ?? ?? ?? ?B?慆 ? ??!?慆 ???揀??I??H? ??H? ???!?B?Z?b? ??!?匎?????????????????????????????????????????!??????????????????棹?????匎????????????????????????? 劜M? B B ? ~ 鐱 ? ? ? 禕 B B? ? 鐱 ? ? ? 銪? 禕 B B H ? ? 鐱 ? ? 郆? ? !?H B H? 怘? O!H H? 郆 B? ? !?H ? BB剨 ? 怘? ?) ~ H? 郆 B BBB B B BB $BBiB咮
Unknown command '禕' - try 'help'
=> = BB剨怘? ? ?)? ?B??? ?剴?? ??鄴B? ??B?B?悞B??
Unknown command '=' - try 'help'
=> 払 BBBB > =B!HBB剨怘?!d ?) = BB剨怘剱?) ICJ 拻拻拕拻? 敀拻 ?? BB?H> =B!HBB浔D? )a?d ?? IC ?22a蓲? 敀拁 ?? BB箩R?=B!HBB浔D!H a?d ??爅B ?22a蓲? 敀? ?? BB箩R?=J=?(=y=l=?!=H= = == == == a=?!=d= = = == =?*=?=?j== == ? =2=2=a=?= BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D = BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D = BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D = BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D ?= BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D ?= BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D ?= BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D = BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D ?= BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D I= BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D = BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D $= BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D = BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D = BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D B= BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D B= BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D ? BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D ? BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D R= BB剨怘剱?) IC拻拻剴挃拻??BB?H> =B!HBB浔D

bugfix · 2018-01-22 14:00:00

用JLink连接,

1号板经常这样：

SEGGER J-Link Commander V4.96l ('?' for help)
Compiled Feb 25 2015 10:24:24
DLL version V4.96l, compiled Feb 25 2015 10:24:11
Firmware: J-Link ARM V8 compiled Jan 31 2018 18:34:52
Hardware: V8.00
S/N: -1
Feature(s): RDI,FlashDL,FlashBP,JFlash,GDBFull
VTarget = 3.274V
Info: Could not measure total IR len. TDO is constant high.
Info: Could not measure total IR len. TDO is constant high.
No devices found on JTAG chain. Trying to find device on SWD.
No device found on SWD.
Failed to identify target. Trying again with slow (4 kHz) speed.
Info: TotalIRLen = 4, IRPrint = 0x01
Info: ARM AP[0]: 0x64770001, AHB-AP
Info: ARM AP[1]: 0x44770002, APB-AP
Info: ROMTbl 0 [0]: 00001003, CID: FFFFFF00, PID:00-00000000
****** Error: Bad JTAG communication: Write to IR: Expected 0x1, got 0xF (TAP Co
mmand : 10) @ Off 0x5.
Cortex-A/R-JTAG (connect): Could not determine address of core debug registers.
Incorrect CoreSight ROM table in device?
No devices found on JTAG chain. Trying to find device on SWD.
No device found on SWD.
No device found at all. Selecting JTAG as default target interface.
J-Link>

但是偶尔也能连上:

SEGGER J-Link Commander V4.96l ('?' for help)
Compiled Feb 25 2015 10:24:24
DLL version V4.96l, compiled Feb 25 2015 10:24:11
Firmware: J-Link ARM V8 compiled Jan 31 2018 18:34:52
Hardware: V8.00
S/N: -1
Feature(s): RDI,FlashDL,FlashBP,JFlash,GDBFull
VTarget = 3.274V
Info: Could not measure total IR len. TDO is constant high.
Info: Could not measure total IR len. TDO is constant high.
No devices found on JTAG chain. Trying to find device on SWD.
No device found on SWD.
Failed to identify target. Trying again with slow (4 kHz) speed.
Info: TotalIRLen = 4, IRPrint = 0x01
Info: ARM AP[0]: 0x64770001, AHB-AP
Info: ARM AP[1]: 0x44770002, APB-AP
Info: ROMTbl 0 [0]: 00001003, CID: 00000000, PID:00-00000000
Info: ROMTbl 0 [1]: 00100003, CID: B105100D, PID:04-000BB4A7 ROM Table
Info: ROMTbl 1 [0]: 00010003, CID: B105900D, PID:04-005BBC07 Cortex-A7
Info: Found Cortex-A7 r0p5
Info: 6 code breakpoints, 4 data breakpoints
Info: Debug architecture ARMv7.1
Info: Data endian: little
Info: Main ID register: 0x410FC075
Info: I-Cache L1: 32 KB, 512 Sets, 32 Bytes/Line, 2-Way
Info: D-Cache L1: 32 KB, 128 Sets, 64 Bytes/Line, 4-Way
Info: Unified-Cache L2: 128 KB, 256 Sets, 64 Bytes/Line, 8-Way
Info: System control register:
Info: Instruction endian: little
Info: Level-1 instruction cache enabled
Info: Level-1 data cache disabled
Info: MMU disabled
Info: Branch prediction enabled
Found 1 JTAG device, Total IRLen = 4:
#0 Id: 0x5BA00477, IRLen: 04, IRPrint: 0x1, CoreSight JTAG-DP (ARM)
Cortex-A7 identified.
J-Link>

bugfix · 2018-01-22 16:07:02

其中1号板子

1. 能烧软件
2. u-boot敲回车无法进入命令行，更不要说引导Linux了
3. 烧xboot串口无法输出
2. 有时可以用IAR + JLink调试简单程序, 可以在SRAM里面跑，也可以在DRAM里面跑,串口有输出.

bugfix · 2018-01-23 11:59:57

大力出悲剧，
果然是打磨问题，
应该是V3s的DRAM堆叠在上面，
激光打坏了。
所以能烧录，但是跑起来各种问题。

估计USB烧录只用到了SRAM，没有用到DRAM,
所以烧录正常。

现在是换V3s的两片PCB都可以了，没换的两片都不行，现象是uboot都起不来，
4片全部都能USB烧写程序.

lvjun0728 · 2018-03-18 16:50:09

这个IC容易坏吗？

老发 · 2018-03-23 15:53:49

什么情况？机贴了还打磨？还是机贴的时候把芯片捅坏了？

晕哥 · 2018-03-23 16:02:21

老发说：

什么情况？机贴了还打磨？还是机贴的时候把芯片捅坏了？

有这种可能，但是要楼主进一步观察才行。

vigour1000 · 2018-12-04 13:20:47

高度关注批量生产

playflash · 2018-12-13 11:29:18

bugfix 说：

大力出悲剧，
果然是打磨问题，
应该是V3s的DRAM堆叠在上面，
激光打坏了。
所以能烧录，但是跑起来各种问题。

估计USB烧录只用到了SRAM，没有用到DRAM,
所以烧录正常。
现在是换V3s的两片PCB都可以了，没换的两片都不行，现象是uboot都起不来，
4片全部都能USB烧写程序.

楼主是要将V3s字样磨掉吗？我想这样做，有什么办法而又不搞坏芯片？

bugfix · 2018-12-13 11:47:51

playflash 说：

bugfix 说：
大力出悲剧，
果然是打磨问题，
应该是V3s的DRAM堆叠在上面，
激光打坏了。
所以能烧录，但是跑起来各种问题。

估计USB烧录只用到了SRAM，没有用到DRAM,
所以烧录正常。
现在是换V3s的两片PCB都可以了，没换的两片都不行，现象是uboot都起不来，
4片全部都能USB烧写程序.
楼主是要将V3s字样磨掉吗？我想这样做，有什么办法而又不搞坏芯片？

最后问题找到了，不是打磨的问题，而是板子有问题造成，给ddr/cpu降频解决了。

达克罗德 · 2018-12-13 14:11:13

bugfix 说：

playflash 说：
bugfix 说：
大力出悲剧，
果然是打磨问题，
应该是V3s的DRAM堆叠在上面，
激光打坏了。
所以能烧录，但是跑起来各种问题。

估计USB烧录只用到了SRAM，没有用到DRAM,
所以烧录正常。
现在是换V3s的两片PCB都可以了，没换的两片都不行，现象是uboot都起不来，
4片全部都能USB烧写程序.
楼主是要将V3s字样磨掉吗？我想这样做，有什么办法而又不搞坏芯片？
最后问题找到了，不是打磨的问题，而是板子有问题造成，给ddr/cpu降频解决了。

板子什么问题会影响DDR/CPU？能分享啊吗

lcfmax · 2018-12-13 14:20:53

板子是双面板，还是多层板

bugfix · 2018-12-13 14:27:30

双面板，板子元器件比较多，估计是画板的同事技术也不太好，最后没有解决这个问题，降频之后还是比原来的s3c2440快很多。

WhyCan Forum(哇酷开发者社区)

楼主 #1 2018-01-19 19:42:44 分享评论

这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

楼主 #2 2018-01-19 19:55:33 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

楼主 #3 2018-01-19 20:03:08 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

楼主 #4 2018-01-19 20:16:17 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

楼主 #5 2018-01-22 14:00:00 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

楼主 #6 2018-01-22 16:07:02 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

楼主 #7 2018-01-23 11:59:57 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

#8 2018-03-18 16:50:09 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

#9 2018-03-23 15:53:49 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

#10 2018-03-23 16:02:21 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

#11 2018-12-04 13:20:47 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

#12 2018-12-13 11:29:18 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

楼主 #13 2018-12-13 11:47:51 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

#14 2018-12-13 14:11:13 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

#15 2018-12-13 14:20:53 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

楼主 #16 2018-12-13 14:27:30 分享评论

Re: 这次做了5片全志Allwinner V3s板子，手贴一片正常,机贴4片均不正常,路过的大神帮我分析分析。

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