[U-Boot] Patches to add some more omap24xx_i2c/twl6035 error handling

[Vincent Stehlé]

Hi,

I am encountering the following i2c error on OMAP5 with mainline u-boot:

  OMAP5430 EVM # mmc rescan
  timed out in wait_for_bb: I2C_STAT=1410

It seems the first call to i2c_write for bus I2C1 will fail and will leave the
bus with SCL stuck low, preventing further i2c operations.

While still debugging this issue, I would like to propose the following
patches, which add some more error handling in this error case already:

  [PATCH 1/2] omap24xx_i2c: Handle wait_for_bb error
  [PATCH 2/2] power: twl6035: complain on LDO9 error

Best regards,

V.