Hi Albin, Thanks for all the help :).
After doing some research i found out that I the configuration I need is !CONFIG_ATMEL_MCI1 since I the interface I'm trying to use is MCI0. When I try it out it does seem like it's trying to read from it (it immediately returns with an -EIO if I remove the SD card) and I guess the problem is with the response. In the for loop in sd_init_card() it should break out of the loop if either there is a return value for mmc_acmd() (which only happens when there's an error) or when (resp[0] & 0x80000000) which I guess is that we read something successfully. When I run "mmc init 0" it never breaks out of that loop. I'm guessing that the response should be something like 0x8XXXXXXXX, then. Am I right? The responses I'm getting are: mmc: CMD55 0x0 (flags 0x1040) mmc: status 0x0c000025 mmc: response: 00000120 mmc: CMD41 0x100000 (flags 0x41) mmc: status 0x0c040025 mmc: response: 00ff8000 What does this number mean? Am I right in my assumption? Thanks, Henry On Tue, Mar 16, 2010 at 6:08 PM, Henry Súcart <henry.suc...@gmail.com>wrote: > I put the printf you asked for in sd_init_card, right after the for loop. > Here's the output: > > With #define CONFIG_ATMEL_MCI1 1 > > > U-Boot> mmc init 0 > mmc: setting clock 150000 Hz, block size 512 > > mmc: clock 150000 too low; setting CLKDIV to 255 > mmc: CMD0 0x0 (flags 0x0) > mmc: status 0x0c000025 > > mmc: CMD0 0x0 (flags 0x100) > mmc: status 0x0c000025 > > mmc: CMD55 0x0 (flags 0x1040) > mmc: status 0x0c000025 > mmc: response: 00000000 > > HJS: MMCI_CR = 0 > HJS: sd_init_card() mmc_acmd after for loop. ret: -19, resp[0] = 0x6B200020 > > mmc: CMD0 0x0 (flags 0x0) > mmc: status 0x0c000025 > > mmc: CMD0 0x0 (flags 0x100) > mmc: status 0x0c000025 > > mmc: CMD1 0x100000 (flags 0x841) > mmc: status 0x0c000025 > mmc: response: 00000000 > > > ...This keeps going for a while and at the end... > > mmc: CMD1 0x100000 (flags 0x841) > mmc: status 0x0c000025 > mmc: response: 00000000 > No MMC card found > > With #define CONFIG_ATMEL_MCI1 0 > > U-Boot> mmc init 0 > mmc: setting clock 150000 Hz, block size 512 > > mmc: clock 150000 too low; setting CLKDIV to 255 > mmc: CMD0 0x0 (flags 0x0) > mmc: status 0x0c000025 > > mmc: CMD0 0x0 (flags 0x100) > mmc: status 0x0c000025 > > mmc: CMD55 0x0 (flags 0x1040) > mmc: status 0x0c000025 > mmc: response: 00000000 > > HJS: MMCI_CR = 0 > HJS: sd_init_card() mmc_acmd after for loop. ret: -19, resp[0] = 0x6B200020 > > mmc: CMD0 0x0 (flags 0x0) > mmc: status 0x0c000025 > > mmc: CMD0 0x0 (flags 0x100) > mmc: status 0x0c000025 > > mmc: CMD1 0x100000 (flags 0x841) > mmc: status 0x0c000025 > mmc: response: 00000000 > mmc: CMD1 0x100000 (flags 0x841) > mmc: status 0x0c000025 > mmc: response: 00000000 > mmc: CMD1 0x100000 (flags 0x841) > mmc: status 0x0c000025 > mmc: response: 00000000 > mmc: CMD1 0x100000 (flags 0x841) > mmc: status 0x0c000025 > mmc: response: 00000000 > mmc: CMD1 0x100000 (flags 0x841) > mmc: status 0x0c000025 > mmc: response: 00000000 > > ...This keeps going for a while and at the end... > > mmc: CMD1 0x100000 (flags 0x841) > mmc: status 0x0c000025 > mmc: response: 00000000 > No MMC card found > > If i take out the #define CONFIG_ATMEL_MCI1 > > > U-Boot> mmc init 0 > mmc: setting clock 150000 Hz, block size 512 > > mmc: clock 150000 too low; setting CLKDIV to 255 > mmc: CMD0 0x0 (flags 0x0) > mmc: status 0x0c000025 > > mmc: CMD0 0x0 (flags 0x100) > mmc: status 0x0c000025 > > mmc: CMD55 0x0 (flags 0x1040) > mmc: status 0x0c000025 > mmc: response: 00000120 > mmc: CMD41 0x100000 (flags 0x41) > mmc: status 0x0c040025 > mmc: response: 00ff8000 > mmc: CMD55 0x0 (flags 0x1040) > mmc: status 0x0c000025 > mmc: response: 00000120 > mmc: CMD41 0x100000 (flags 0x41) > mmc: status 0x0c040025 > mmc: response: 00ff8000 > > ... Goes on for a while... > > HJS: MMCI_CR = 0 > HJS: sd_init_card() mmc_acmd for loop ret: -110, resp[0] = 0x00FF8000 > > mmc: CMD0 0x0 (flags 0x0) > mmc: status 0x0c000025 > > mmc: CMD0 0x0 (flags 0x100) > mmc: status 0x0c000025 > > mmc: CMD1 0x100000 (flags 0x841) > mmc: status 0x0c100025 > > mmc: command 1 failed (status: 0x0c100025) > HJS: error_flags: 0x005B0000, status & error_flags: 0x00100000 > HJS: mmc_init_card() ret = -5 > HJS: mmc_init_card failed > No MMC card found > > In all of them I used the slot J6. I tried it with J5 too but it did the > same thing. > > > On Tue, Mar 16, 2010 at 4:36 PM, Albin Tonnerre < > albin.tonne...@free-electrons.com> wrote: > >> On Tue, 16 Mar 2010 08:30 -0400, Henry Súcart wrote : >> > Here's the command I'm using and the output. I put a debugging statement >> in >> > sd_init_card() after the for loop (HJS:). >> > >> > U-Boot> mmc init 0 >> > mmc: clock 150000 too low; setting CLKDIV to 255 >> > HJS: sd_init_card() mmc_acmd for loop finished. ret = -19, resp[0] = >> > 0x6B200020 >> > No MMC card found >> >> Err, well, that's weird. I have to admit I can't even guess whether it's >> trying to read the right slot. Could you please: >> >> 1/ add a #define DEBUG at the top of drivers/mmc/atmel_mci.c >> 2/ get the output of mmc init (0 or 1 doesn't matter) for both >> CONFIG_ATMEL_MCI1 >> and !CONFIG_ATMEL_MCI1 (with the SD card staying in the same slot, of >> course) >> 3/ In the process, add a debug printf in the mci driver displaying the >> value of >> MMCI_CR (you'd get that by calling mmci_readl(CR)) >> >> I'm sorry I can't help you further. Unfortunately I don't own such >> hardware, and >> this kind of thing is rather hard to debug remotely. >> >> Regards, >> -- >> Albin Tonnerre, Free Electrons >> Kernel, drivers and embedded Linux development, >> consulting, training and support. >> http://free-electrons.com >> > >
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