[U-Boot] [PATCH] mx6sabred: Add PFUZE100 PMIC support

[Stefano Babic <sbabic@denx.de>]

Hi Fabio,

On 05/05/2014 18:08, Fabio Estevam wrote:
> On Mon, May 5, 2014 at 12:56 PM, Fabio Estevam <festevam@gmail.com> wrote:
>> On Mon, May 5, 2014 at 12:32 PM, Tim Harvey <tharvey@gateworks.com> wrote:
>>
>>> Hi Fabio,
>>>
>>> Yes, I think Stefano is correct in that power_init_board() is the
>>> right place to put pmic init. He asked me to do that to my recent
>>> series as well and it worked fine. Note that in that series I do have
>>> a patch that will rename pmic_init() for the PFUZE100 to
>>> power_pfuze100_init() [1]. I'm hoping that will make it in soon.
>>
>> Thanks, Tim.
>>
>> Stefano,
>>
>> It seems that I need to wait for Tim's series to be applied, otherwise
>> there will be a build breakage.
> 
> In the meantime I converted the current patch to using
> power_init_board() instead, but this causes problems:
> 
> => pmic list
> PMIC devices:
> name: PFUZE100_PMIC bus: I2C_1
> => pmic PFUZE100_PMIC dump
> PMIC: PFUZE100_PMIC
> 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
> PMIC: Registers dump failed
> 
> With the previous misc_init_r() approach the 'dump' command worked correctly.
> 
> Any suggestions?
> 

Checkin in arch/arm/lib/board.c, I see that power_init_board() is called
quite early (that makes sense, as power can be necessary to go on). Can
you try moving  power_init_board() later ?
Anyway, I2C is already set (by board_init, called previously) and malloc
is also available.

Regards,
Stefano


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