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

Marcus Weseloh marcus at weseloh.cc
Wed Mar 1 15:10:59 UTC 2017


Hi Oliver,

2017-03-01 13:52 GMT+01:00 Olliver Schinagl <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.

[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


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