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The V3 regulator can be configured with an external resistor connected to the feedback pin (R24 in the data sheet) to increase the voltage range. For example, hx4700 has R24 = 3.32 kOhm to achieve a maximum V3 voltage of 1.55 V which is needed for 624 MHz CPU frequency. Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>