ARM: dts: sunxi: Add dtsi for AXP22x PMIC
The AXP22x family of PMIC is used with some Allwinner SoCs. This includes the AXP221, AXP221s and AXP223. They differ in the host interface, maximum supply current for DCDC1 regulator, and default voltage and state for various LDO regulators. Also, the AXP221s does not support fine calibration of the battery fuel gauge. This patch adds a dtsi file for all the common bindings for these PMICs. Currently this is just listing all the regulator nodes. The regulators are initialized based on their device node names. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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