[U-Boot] [PATCH] imx:mx6sxsabresd fix pfuz probe failed

[Fabio Estevam]

On Fri, Oct 31, 2014 at 10:01 PM, Peng Fan <B51431 at freescale.com> wrote:
>
>
> On 10/31/2014 08:01 PM, Fabio Estevam wrote:
>> On Fri, Oct 31, 2014 at 1:08 AM, Peng Fan <Peng.Fan at freescale.com> wrote:
>>> The PFUZ probe failed with the following msg:
>>> " wait_for_sr_state: failed sr=81 cr=a0 state=2020
>>>   i2c_init_transfer: failed for chip 0x8 retry=0
>>>   wait_for_sr_state: failed sr=81 cr=a0 state=2020
>>>   i2c_init_transfer: failed for chip 0x8 retry=1
>>>   wait_for_sr_state: failed sr=81 cr=a0 state=2020
>>>   i2c_init_transfer: failed for chip 0x8 retry=2
>>>   i2c_init_transfer: give up i2c_regs=021a0000
>>>   Can't find PMIC:PFUZE100 "
>>>
>>> board_early_init_f is too early to call i2c related setting, because
>>> init_func_i2c is called after board_early_init_f being invoked. Thus
>>> move setup_i2c into board_init.
>>>
>>> Also PFUZ is connected to I2C bus 0, so change "1" -> "0".
>>>
>>> Using this patch PFUZ can be correctly probed:
>>> "PMIC:  PFUZE100 ID=0x11"
>>>
>>> Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
>>
>> Maybe this is a difference between RevA versus RevB board?
>
> I checked SCH-27962 REV A and SCH-27962 REV B. There is no different to I2C part. PMIC is connected to the first I2C bus. You can check page 22.

You are right. I was surprised that PMIC was working originally. I
tested your change and it also works fine here.

Thanks!