How do i enable i2c1 default in the u-boot

Bernie Chen

We use sdk6 BSP AM335x

In u-boot i2c0 is enabled by default , but all of chip on i2c1 such as eeprom, so when I boot, the wrong message are shown below.

U-Boot SPL 2013.01.01-gac86fbc (Nov 07 2014 - 18:38:04)
timed out in wait_for_pin: I2C_STAT=0
Could not probe the EEPROM; something fundamentally wrong on the I2C bus.
timed out in wait_for_pin: I2C_STAT=0
I2C read: I/O error
Could not read the EEPROM; something fundamentally wrong on the I2C bus.
timed out in wait_for_pin: I2C_STAT=0
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)

How do i enable i2c1 default in the u-boot? thank you.

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Hi Bernie,

Do you have the PMIC connected on I2C1 too? If this is so it will not work - PMIC must always be on I2C0.

0 Bernie Chen over 10 years ago in reply to Biser Gatchev-XID

Expert 2190 points

Yes, the PMIC is connected on I2C1.

We use wrong u-boot (for android), and we still revise the i2c0 default issue then everything was working very well

until we must flash image to nand flash, we need replace the correct u-boot(sdk6) to apply the nand patch given from

FAE engineer , so i think revise to the i2c1 default is ok. Could you tell me how can i fix it?

Thank you.

0 Biser Gatchev-XID over 10 years ago in reply to Bernie Chen

TI__Guru**** 393215 points

There are two approaches: either you skip the EEPROM checks or you will have to init I2C1 in the MLO. Just find where I2C0 is initialized there and change it to I2C1.

0 Bernie Chen over 10 years ago in reply to Biser Gatchev-XID

Expert 2190 points

Thanks.

The third method We use wrong u-boot, revise them to support 4K page size to flash images to nand, because

it work very well.

I will create new threads, thank you.

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How do i enable i2c1 default in the u-boot