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dt-bindings: regulator: add proxy consumer bindings

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Add bindings for regulator proxy consumers which can be used to
enforce minimum voltage, current, and enable state of regulators
when a board is booting up.

Change-Id: If51da56b7c8f685d0c8a93d514964d2c924381ce
This commit is contained in:
David Collins
2019-11-08 15:11:31 -08:00
parent af0a7005a1
commit afaee4210b
1 changed files with 80 additions and 0 deletions
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bindings/regulator/proxy-consumer.txt Normal file
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Regulator Proxy Consumer Bindings
Regulator proxy consumers provide a means to use a default regulator state
during bootup only which is removed at the end of boot. This feature can be
used in situations where a shared regulator can be scaled between several
possible voltages and hardware requires that it be at a high level at the
beginning of boot before the consumer device responsible for requesting the
high level has probed.
Supported properties:
- qcom,proxy-consumer-enable
Usage: optional
Value type: <empty>
Definition: Boolean flag indicating that the regulator must be kept
enabled during boot.
- qcom,proxy-consumer-voltage
Usage: optional
Value type: <prop-encoded-array>
Definition: List of two integers corresponding the minimum and maximum
voltage in microvolts allowed during boot.
- qcom,proxy-consumer-current
Usage: optional
Value type: <u32>
Definition: Minimum current in microamps required during boot.
- qcom,proxy-consumer-name
Usage: optional
Value type: <string>
Definition: Name of the proxy consumer supply. If not specified,
"proxy" is assumed.
- <proxy-consumer-name>-supply
Usage: required if qcom,proxy-consumer-enable,
qcom,proxy-consumer-voltage, or qcom,proxy-consumer-current
is specified
Value type: <phandle>
Definition: phandle of the regulator's own device node.
<proxy-consumer-name> is defined in qcom,proxy-consumer-name
or "proxy" if qcom,proxy-consumer-name isn't present.
Examples:
foo_vreg: regulator@0 {
regulator-name = "foo";
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <2000000>;
proxy-supply = <&foo_vreg>;
qcom,proxy-consumer-voltage = <1500000 2000000>;
qcom,proxy-consumer-current = <25000>;
qcom,proxy-consumer-enable;
};
pmic {
compatible = "foo_pmic";
ldo1-proxy-supply = <&ldo1>;
ldo2-proxy-supply = <&ldo2>;
ldo1: ldo1 {
regulator-name = "ldo1";
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <2000000>;
qcom,proxy-consumer-name = "ldo1-proxy";
qcom,proxy-consumer-voltage = <1500000 2000000>;
qcom,proxy-consumer-current = <25000>;
qcom,proxy-consumer-enable;
};
ldo2: ldo2 {
regulator-name = "ldo2";
regulator-min-microvolt = <2000000>;
regulator-max-microvolt = <3000000>;
qcom,proxy-consumer-name = "ldo2-proxy";
qcom,proxy-consumer-voltage = <2500000 3000000>;
qcom,proxy-consumer-current = <50000>;
qcom,proxy-consumer-enable;
};
};