[U-Boot] am335x board i2c_probe fails from nand boot

[Lokesh Vutla]

On Tuesday 03 January 2017 08:07 PM, matti kaasinen wrote:
> "The Expected Linux image was not found. Please check your NAND
> configuration" message is coming from:
> common/spl/spl_nand.c
> In practice this message seems coming from the fact that header of
> kernel image can't be identified from offset after executing:
> nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS,,)

This is fine as SPL_OS_BOOT is enabled by default. We are successfully
going to u-boot prompt, so no issues.

> So, something gets broken in while executing nand_spl_load_image.
> Perhaps CONFIG_SYS_NAND_SPL_KERNEL_OFFS value.
> 
> "Card did not respond to voltage select!" is coming from:
> drivers/mmc/mmc.c

Can you check if mmc mux is being done properly?

Thanks and regards,
Lokesh

> 
> 2017-01-03 15:34 GMT+02:00 matti kaasinen <matti.kaasinen at gmail.com
> <mailto:matti.kaasinen at gmail.com>>:
> 
> 
>     2017-01-03 14:33 GMT+02:00 matti kaasinen <matti.kaasinen at gmail.com
>     <mailto:matti.kaasinen at gmail.com>>:
> 
>         One reason why I2C configuration is wrong in nand mode could be
>         the fact that I have CONFIG_TI_I2C_BOARD_DETECT variable is
>         undefined (because I do not have that eeprom). But it looks that
>         do_board_detect runs enable_i2c0_pin_mux() that I do not run
>         separately. On the other hand, that does not explain why mmc
>         boot works.
> 
> 
> 
>     Now I did this I2C0 configuration separately prior to running
>     i2c_probe(). Nand boot went further now. However, main u-boot did
>     not start properly. I got following messages
>     Trying to boot from NAND
>     The Expected Linux image was not found. Please check your NAND
>     configuration.
>     Trying to start u-boot now...
> 
>     ........ more messages ....
>     Press SPACE to abort autoboot in 2 seconds
>     Card did not respond to voltage select!
>     Card did not respond to voltage select!
>     Card did not respond to voltage select!
>     Card did not respond to voltage select!
>     Card did not respond to voltage select!
>     data abort
>     pc : [<8ff70f94>]          lr : [<8ff701dd>]
>     reloc pc : [<8081df94>]    lr : [<8081d1dd>]
>     sp : 8ef28678  ip : 8ff5891d     fp : 00000003
>     r10: 8ffb3af8  r9 : 8ef32ed8     r8 : 8ef41e40
>     r7 : 8ff584bd  r6 : 8ef39478     r5 : 8ef39500  r4 : 47810000
>     r3 : 8ff70f85  r2 : 00000d8d     r1 : 00000000  r0 : 8ef39500
>     Flags: nZCv  IRQs off  FIQs on  Mode SVC_32
>     Resetting CPU ...
> 
>     resetting ...
> 
>     And game over....
>     So, it's not quite sure that voltage adjustments went through even
>     though I2C did not complain anymore.
>     There could be something wrong with nand settings, too. I need to
>     check where these complaints are coming.
> 
>     Thanks anyway for your comments,
>     Matti
> 
>