RP1_PAD_PULL
[RP1_PAD_PULL] = REG_FIELD(0, 2, 3),
regmap_field_write(pin->pad[RP1_PAD_PULL], arg & 0x3);
regmap_field_read(pin->pad[RP1_PAD_PULL], &padctrl);
regmap_field_read(pin->pad[RP1_PAD_PULL], &padctrl);
regmap_field_read(pin->pad[RP1_PAD_PULL], &padctrl);