[U-Boot] [linux-sunxi] [PATCH 6/8] power: axp209: Add support for voltage rate control on LDO3

[Chen-Yu Tsai]

On Thu, Mar 2, 2017 at 12:02 AM, Olliver Schinagl
<o.schinagl at ultimaker.com> wrote:
> Hey Marcus,
>
> On 01-03-17 16:10, Marcus Weseloh wrote:
>>
>> Hi Oliver,
>>
>> 2017-03-01 13:52 GMT+01:00 Olliver Schinagl <oliver at schinagl.nl
>> <mailto:oliver at schinagl.nl>>:
>>
>>     +#define AXP209_VRC_LDO3_EN             BIT(3)
>>     +#define AXP209_VRC_DCDC2_EN            BIT(2)
>>     +#define AXP209_VRC_LDO3_800uV_uS       (BIT(1) | AXP209_VRC_LDO3_EN)
>>     +#define AXP209_VRC_LDO3_1600uV_uS      AXP209_VRC_LDO3_EN
>>
>>
>> Does that mean that the description of the LDO3/DCDC2 VRC control on the
>> linux-sunxi wiki [1] and the PDF datasheet [2] are wrong? They say that
>> VRC for LDO3 is enabled if the bit is 0, disabled when the bit is 1. And
>> that the default value is enabled.
>
>
> Yes you are correct (and well spotted) that the datasheet is wrong. It took
> us some time to figure out why it wasn't working :)
>
> I thought I updated the wiki, but I must have done it incorrectly. I will
> fix it immediatly.

Please also leave a note there saying the datasheet is wrong.

Thanks
ChenYu

>
> olliver
>
>
>
>>
>> [1]
>>
>> http://linux-sunxi.org/AXP209#REG_25H:_DC-DC2.2FLDO3_dynamic_voltage_scaling_parameter_settings
>> [2] http://dl.linux-sunxi.org/AXP/AXP209_Datasheet_v1.0en.pdf
>>
>> Cheers,
>>
>>   Marcus