android_kernel_samsung_msm8976/Documentation/devicetree/bindings/arm/msm/cpu-ldo-ret-8976.txt

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*8976 Perf-CPU LDO Retention Voltage Configuration
This device is used to program the appropriate LDO voltage for 8976 Performance cluster CPU's from the pre-programmed register.
Required properties:
- compatible:
Must be "qcom,8976-cpu-ldo-vref"
- reg:
The register holds the base address to LDO_BHS. Use this
register base to configure the LDO for all the cpus.
- qcom,ldo-vref-ret:
Value to which the ldo voltage reference needs to be
programmed.
Value to be used is encoded. 0x9 = 0.5V and 0x10 = 0.55V
Example:
ldo0:ldo-vref@b086000 {
compatible = "qcom,8976-cpu-ldo-vref";
reg = <0xb086000 0x40>,
qcom,ldo-vref-ret = <0x9>;
};