The voltages in axp20x_ldo4_data table are in ascendant order, so use
regulator_map_voltage_ascend.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Signed-off-by: NMark Brown <broonie@linaro.org>

The of_find_node_by_name function will search for a DT node named
"regulators" after the provided np node, but will not ensure that this node
is a child of np.
This might result in retrieving a "regulators" node that is not related to
the axp20x PMIC.
Signed-off-by: NBoris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: NCarlo Caione <carlo@caione.org>
Signed-off-by: NMark Brown <broonie@linaro.org>

AXP202 and AXP209 come with two synchronous step-down DC-DCs and five
LDOs. This patch introduces basic support for those regulators.
Signed-off-by: NCarlo Caione <carlo@caione.org>
Signed-off-by: NMark Brown <broonie@linaro.org>