upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/doc/device-tree-bindings/pmic/max77686.txt

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MAXIM, MAX77686 pmic
This device uses two drivers:
- drivers/power/pmic/max77686.c (for parent device)
- drivers/power/regulator/max77686.c (for child regulators)
This file describes the binding info for the PMIC driver.
To bind the regulators, please read the additional binding info:
- doc/device-tree-bindings/regulator/max77686.txt
Required properties:
- compatible: "maxim,max77686"
- reg = 0x9
With those two properties, the pmic device can be used for read/write only.
To bind each regulator, the optional regulators subnode should exists.
Optional subnode:
- voltage-regulators: subnode list of each device's regulator
(see max77686.txt - regulator binding info)
Example:
max77686@09 {
compatible = "maxim,max77686";
reg = <0x09>;
voltage-regulators {
ldo1 {
...
};
...
};
};