* [U-Boot] MMC problem in PXA270 hardware
@ 2010-01-18 6:00 Vaisakh
2010-01-18 10:33 ` Vaisakh P S
0 siblings, 1 reply; 5+ messages in thread
From: Vaisakh @ 2010-01-18 6:00 UTC (permalink / raw)
To: u-boot
Hi,
I am trying bring up MMC in our hardware which is running on PXA270
processor with 128 MB RAM.
But i am not able to detect the SDCARD, as it is showing the invalid
partition table (the dos partition magic number is not correct, it is 44aa,
instead of 55 aa), what could be the problem for such a behavior ?
But the same card is working properly in Linux on the same board.
Thanks & regards,
--
Vaisakh P S
(http://www.google.com/profiles/VaisakhRulez)
Here is a log of printfs while doing mmc init:
WWPC at Accord$ mmc init
mmc_cmd 0 0x0000 0x0000 0x0040
MMC status 0x00002140
MMC resp[0] = 0x000000
MMC resp[1] = 0x000000
MMC resp[2] = 0x000000
MMC resp[3] = 0x000000
mmc_cmd 55 0x0000 0x0000 0x0001
MMC status 0x00002140
MMC resp[0] = 0x000120
MMC resp[1] = 0x000000
MMC resp[2] = 0x000000
MMC resp[3] = 0x000037
mmc_cmd 41 0x0030 0x0000 0x0043
MMC status 0x00002140
MMC resp[0] = 0xff8000
MMC resp[1] = 0x000000
MMC resp[2] = 0x000000
MMC resp[3] = 0x00003f
mmc_cmd 55 0x0000 0x0000 0x0001
MMC status 0x00002140
MMC resp[0] = 0x000120
MMC resp[1] = 0x000000
MMC resp[2] = 0x000000
MMC resp[3] = 0x000037
mmc_cmd 41 0x0030 0x0000 0x0003
MMC status 0x00002140
MMC resp[0] = 0x80ff8000
MMC resp[1] = 0x000000
MMC resp[2] = 0x000000
MMC resp[3] = 0x00003f
Detected SD card
mmc_cmd 2 0x0000 0x0000 0x0022
MMC status 0x00002140
MMC resp[0] = 0x1b534d30
MMC resp[1] = 0x30303030
MMC resp[2] = 0x10b1c8f2
MMC resp[3] = 0xa300993f
mmc_cmd 3 0x0000 0x0000 0x0001
MMC status 0x00002140
MMC resp[0] = 0x020500
MMC resp[1] = 0x30303030
MMC resp[2] = 0x10b1c8f2
MMC resp[3] = 0xa3009903
mmc_cmd 9 0x0002 0x0000 0x0002
MMC status 0x00002140
MMC resp[0] = 0x7fff32
MMC resp[1] = 0x5f5983cb
MMC resp[2] = 0x76dbdfff
MMC resp[3] = 0x9640003f
Detected: 1989632 blocks of 512 bytes (971MB) SD card.
Vendor: Man 1b OEM SM "00000" Date 09/2009
Product: 2982736547
Revision: 1.0
mmc_cmd 7 0x0002 0x0000 0x0001
MMC status 0x00002140
MMC resp[0] = 0x000700
MMC resp[1] = 0x5f5983cb
MMC resp[2] = 0x76dbdfff
MMC resp[3] = 0x96400007
mmc_cmd 55 0x0002 0x0000 0x0001
MMC status 0x00002140
MMC resp[0] = 0x000920
MMC resp[1] = 0x5f5983cb
MMC resp[2] = 0x76dbdfff
MMC resp[3] = 0x96400037
mmc_cmd 6 0x0000 0x0002 0x0001
MMC status 0x00002140
MMC resp[0] = 0x000920
MMC resp[1] = 0x5f5983cb
MMC resp[2] = 0x76dbdfff
MMC resp[3] = 0x96400006
fat_register_device++
src 0 dst a1e9fba8 end 200 pstart 0 pend 0 astart 0 aend 200
src 0 dst a1e9fba8 end 200 pstart 0 pend 0 astart 0 aend 200
al src 0 dst a1e9fba8 end 200 pstart 0 pend 0 astart 0 aend 200
mmc_block_rd dst a1e9fba8 src 0 len 512
mmc_cmd 16 0x0000 0x0200 0x0101
MMC status 0x00002140
MMC resp[0] = 0x000900
MMC resp[1] = 0x5f5983cb
MMC resp[2] = 0x76dbdfff
MMC resp[3] = 0x96400010
mmc_cmd 17 0x0000 0x0000 0x0105
MMC status 0x00002140
MMC resp[0] = 0x000900
MMC resp[1] = 0x5f5983cb
MMC resp[2] = 0x76dbdfff
MMC resp[3] = 0x96400011
src 200 dst a1e9fda8 end 200 pstart 0 pend 0 astart 0 aend 200
0xea 0xa8 0x0 0x0 0x8e 0xc0 0xac 0x0 0xa0 0xa8 0x0 0x0 0x8e 0xc8 0x8e 0xc0
0xea 0xae 0x0 0x6c 0xae 0x0 0x6 0xa8 0x0 0x2 0xe2 0xa4 0xea 0x20 0x6 0x0 0x0
0xae 0xae 0x6 0x28 0x4 0x64 0xa 0x82 0xc6 0x0 0x80 0xee 0xee 0x6 0x64 0xe2
0xea 0x6 0xa4 0x2 0xa0 0x0 0xaa 0x0 0x6c 0xa2 0x80 0x8a 0x64 0x0 0x8a 0x4c
0x2 0xcc 0x2 0xea 0x0 0x6c 0x0 0x0 0xea 0xee 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x24 0x46 0x4
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x82 0xee 0x2e 0xc 0x2e 0x0 0x0 0x0 0x4e 0x4a
0x6 0x0 0x0 0x0 0x0 0xe 0x82 0xee 0x2e 0x48 0x8e 0x4a 0x6 0x0 0x2c 0xc8 0xa
0x0 0x0 0x0 0x0 0x4a 0x82 0xee 0x2e 0x6a 0xca 0x22 0x2 0x0 0xe0 0x2 0xc 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x44 0xaa
fat_register_device++ No signature found. Signature dos = 0x44
mmc_legacy_init: complete
mmc1 is available
^ permalink raw reply [flat|nested] 5+ messages in thread
* [U-Boot] MMC problem in PXA270 hardware
2010-01-18 6:00 [U-Boot] MMC problem in PXA270 hardware Vaisakh
@ 2010-01-18 10:33 ` Vaisakh P S
2010-01-18 11:31 ` Wolfgang Denk
0 siblings, 1 reply; 5+ messages in thread
From: Vaisakh P S @ 2010-01-18 10:33 UTC (permalink / raw)
To: u-boot
Hi,
I did some more debugging, i dumped the MBR for the sdcard, and it was
proper in OS in board and PC.
Here is the dump i got in OS:
00000000 fa b8 00 10 8e d0 bc 00 b0 b8 00 00 8e d8 8e c0
|................|
00000010 fb be 00 7c bf 00 06 b9 00 02 f3 a4 ea 21 06 00
|...|.........!..|
00000020 00 be be 07 38 04 75 0b 83 c6 10 81 fe fe 07 75
|....8.u........u|
00000030 f3 eb 16 b4 02 b0 01 bb 00 7c b2 80 8a 74 01 8b
|.........|...t..|
00000040 4c 02 cd 13 ea 00 7c 00 00 eb fe 00 00 00 00 00
|L.....|.........|
00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000080 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000090 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000000a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000000b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000000c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000000d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000000e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000000f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000100 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000110 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000120 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000130 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000140 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000150 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000160 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000170 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000180 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000190 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000001a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000001b0 00 00 00 00 00 00 00 00 25 47 05 00 00 00 00 01
|........%G......|
000001c0 01 00 06 fe 3f 7a 3f 00 00 00 7c 26 1e 00 00 00
|....?z?...|&....|
000001d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000001e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000001f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa
|..............U.|
But in Uboot, the dump which i got MBR read was the following
0xea 0xa8 0x0 0x0 0x8e 0xc0 0xac 0x0 0xa0 0xa8 0x0 0x0 0x8e 0xc8 0x8e 0xc0
0xea 0xae 0x0 0x6c 0xae 0x0 0x6 0xa8 0x0 0x2 0xe2 0xa4 0xea 0x20 0x6 0x0 0x0
0xae 0xae 0x6 0x28 0x4 0x64 0xa 0x82 0xc6 0x0 0x80 0xee 0xee 0x6 0x64 0xe2
0xea 0x6 0xa4 0x2 0xa0 0x0 0xaa 0x0 0x6c 0xa2 0x80 0x8a 0x64 0x0 0x8a 0x4c
0x2 0xcc 0x2 0xea 0x0 0x6c 0x0 0x0 0xea 0xee 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x24 0x46 0x4
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x82 0xee 0x2e 0xc 0x2e 0x0 0x0 0x0 0x4e 0x4a
0x6 0x0 0x0 0x0 0x0 0xe 0x82 0xee 0x2e 0x48 0x8e 0x4a 0x6 0x0 0x2c 0xc8 0xa
0x0 0x0 0x0 0x0 0x4a 0x82 0xee 0x2e 0x6a 0xca 0x22 0x2 0x0 0xe0 0x2 0xc 0x0
0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x44 0xaa
How can I go forward in this?
--
View this message in context: http://old.nabble.com/-U-Boot--MMC-problem-in-PXA270-hardware-tp27206457p27208581.html
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^ permalink raw reply [flat|nested] 5+ messages in thread
* [U-Boot] MMC problem in PXA270 hardware
2010-01-18 10:33 ` Vaisakh P S
@ 2010-01-18 11:31 ` Wolfgang Denk
2010-01-18 23:02 ` Andy Fleming
0 siblings, 1 reply; 5+ messages in thread
From: Wolfgang Denk @ 2010-01-18 11:31 UTC (permalink / raw)
To: u-boot
Dear Vaisakh P S,
In message <27208581.post@talk.nabble.com> you wrote:
>
> I did some more debugging, i dumped the MBR for the sdcard, and it was
> proper in OS in board and PC.
>
> Here is the dump i got in OS:
>
> 00000000 fa b8 00 10 8e d0 bc 00 b0 b8 00 00 8e d8 8e c0
> 00000010 fb be 00 7c bf 00 06 b9 00 02 f3 a4 ea 21 06 00
> 00000020 00 be be 07 38 04 75 0b 83 c6 10 81 fe fe 07 75
...
> But in Uboot, the dump which i got MBR read was the following
>
> 0xea 0xa8 0x0 0x0 0x8e 0xc0 0xac 0x0 0xa0 0xa8 0x0 0x0 0x8e 0xc8 0x8e 0xc0
> 0xea 0xae 0x0 0x6c 0xae 0x0 0x6 0xa8 0x0 0x2 0xe2 0xa4 0xea 0x20 0x6 0x0 0x0
> 0xae 0xae 0x6 0x28 0x4 0x64 0xa 0x82 0xc6 0x0 0x80 0xee 0xee 0x6 0x64 0xe2
Seems something is eating the 0x10 bit, so 0xFA becomes 0xEA, etc.
Check your harware, eventually a signal is not connected correctly?
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
I haven't lost my mind -- it's backed up on tape somewhere.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [U-Boot] MMC problem in PXA270 hardware
2010-01-18 11:31 ` Wolfgang Denk
@ 2010-01-18 23:02 ` Andy Fleming
2010-01-19 13:41 ` Vaisakh P S
0 siblings, 1 reply; 5+ messages in thread
From: Andy Fleming @ 2010-01-18 23:02 UTC (permalink / raw)
To: u-boot
On Mon, Jan 18, 2010 at 5:31 AM, Wolfgang Denk <wd@denx.de> wrote:
> Dear Vaisakh P S,
>
> In message <27208581.post@talk.nabble.com> you wrote:
>>
>> I did some more debugging, i dumped the MBR for the sdcard, and it was
>> proper in OS in board and PC.
>>
>> Here is the dump i got in OS:
>>
>> 00000000 ?fa b8 00 10 8e d0 bc 00 ?b0 b8 00 00 8e d8 8e c0
>> 00000010 ?fb be 00 7c bf 00 06 b9 ?00 02 f3 a4 ea 21 06 00
>> 00000020 ?00 be be 07 38 04 75 0b ?83 c6 10 81 fe fe 07 75
> ...
>> But in Uboot, the dump which i got MBR read was the following
>>
>> ?0xea 0xa8 0x0 0x0 0x8e 0xc0 0xac 0x0 0xa0 0xa8 0x0 0x0 0x8e 0xc8 0x8e 0xc0
>> 0xea 0xae 0x0 0x6c 0xae 0x0 0x6 0xa8 0x0 0x2 0xe2 0xa4 0xea 0x20 0x6 0x0 0x0
>> 0xae 0xae 0x6 0x28 0x4 0x64 0xa 0x82 0xc6 0x0 0x80 0xee 0xee 0x6 0x64 0xe2
>
> Seems something is eating the 0x10 bit, so 0xFA becomes 0xEA, etc.
Actually, it looks like you're losing the 0x01 bit, too. Maybe the
u-boot driver is somehow mis-detecting how many bits are connected?
The card should be saying which bit-widths it supports, and the host
controller should be properly reporting which widths it supports. I'm
not familiar with the pxa270's driver, but it might be possible to
modify it to only do 1-bit transfers, and see if that works.
Andy
^ permalink raw reply [flat|nested] 5+ messages in thread
* [U-Boot] MMC problem in PXA270 hardware
2010-01-18 23:02 ` Andy Fleming
@ 2010-01-19 13:41 ` Vaisakh P S
0 siblings, 0 replies; 5+ messages in thread
From: Vaisakh P S @ 2010-01-19 13:41 UTC (permalink / raw)
To: u-boot
Hi,
Thanks everyone for your suggestions, I changed the width to 1 bit and it
is working right.
Regards,
Vaisakh P S
Andy Fleming-2 wrote:
>
> On Mon, Jan 18, 2010 at 5:31 AM, Wolfgang Denk <wd@denx.de> wrote:
>> Dear Vaisakh P S,
>>
>> In message <27208581.post@talk.nabble.com> you wrote:
>>>
>>> I did some more debugging, i dumped the MBR for the sdcard, and it was
>>> proper in OS in board and PC.
>>>
>>> Here is the dump i got in OS:
>>>
>>> 00000000 ?fa b8 00 10 8e d0 bc 00 ?b0 b8 00 00 8e d8 8e c0
>>> 00000010 ?fb be 00 7c bf 00 06 b9 ?00 02 f3 a4 ea 21 06 00
>>> 00000020 ?00 be be 07 38 04 75 0b ?83 c6 10 81 fe fe 07 75
>> ...
>>> But in Uboot, the dump which i got MBR read was the following
>>>
>>> ?0xea 0xa8 0x0 0x0 0x8e 0xc0 0xac 0x0 0xa0 0xa8 0x0 0x0 0x8e 0xc8 0x8e
>>> 0xc0
>>> 0xea 0xae 0x0 0x6c 0xae 0x0 0x6 0xa8 0x0 0x2 0xe2 0xa4 0xea 0x20 0x6 0x0
>>> 0x0
>>> 0xae 0xae 0x6 0x28 0x4 0x64 0xa 0x82 0xc6 0x0 0x80 0xee 0xee 0x6 0x64
>>> 0xe2
>>
>> Seems something is eating the 0x10 bit, so 0xFA becomes 0xEA, etc.
>
>
> Actually, it looks like you're losing the 0x01 bit, too. Maybe the
> u-boot driver is somehow mis-detecting how many bits are connected?
> The card should be saying which bit-widths it supports, and the host
> controller should be properly reporting which widths it supports. I'm
> not familiar with the pxa270's driver, but it might be possible to
> modify it to only do 1-bit transfers, and see if that works.
>
> Andy
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
>
>
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^ permalink raw reply [flat|nested] 5+ messages in thread
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2010-01-18 6:00 [U-Boot] MMC problem in PXA270 hardware Vaisakh
2010-01-18 10:33 ` Vaisakh P S
2010-01-18 11:31 ` Wolfgang Denk
2010-01-18 23:02 ` Andy Fleming
2010-01-19 13:41 ` Vaisakh P S
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