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linux
regulator: dt-bindings: add MCP16502 regulator bindings
This patch describes the compatible and the device tree
bindings necessary for the MCP16502 PMIC.
Signed-off-by: Andrei Stefanescu <andrei.stefanescu@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
authored by
Andrei.Stefanescu@microchip.com
and committed by
Mark Brown
96f3fb86
8a582fa9
+143
+143
Documentation/devicetree/bindings/regulator/mcp16502-regulator.txt
+143
Documentation/devicetree/bindings/regulator/mcp16502-regulator.txt
···
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MCP16502 PMIC
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Required properties:
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- compatible: "microchip,mcp16502"
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- reg: I2C slave address
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- lpm-gpios: GPIO for LPM pin. Note that this GPIO *must* remain high during
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suspend-to-ram, keeping the PMIC into HIBERNATE mode.
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- regulators: A node that houses a sub-node for each regulator within
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the device. Each sub-node is identified using the node's
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name. The content of each sub-node is defined by the
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standard binding for regulators; see regulator.txt.
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Regualtors of MCP16502 PMIC:
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1) VDD_IO - Buck (1.2 - 3.7 V)
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2) VDD_DDR - Buck (0.6 - 1.85 V)
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3) VDD_CORE - Buck (0.6 - 1.85 V)
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4) VDD_OTHER - BUCK (0.6 - 1.85 V)
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5) LDO1 - LDO (1.2 - 3.7 V)
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6) LDO2 - LDO (1.2 - 3.7 V)
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Regulator modes:
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2 - FPWM: higher precision, higher consumption
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4 - AutoPFM: lower precision, lower consumption
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Each regulator is defined using the standard binding for regulators.
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Example:
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mcp16502@5b {
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compatible = "microchip,mcp16502";
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reg = <0x5b>;
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status = "okay";
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lpm-gpios = <&pioBU 7 GPIO_ACTIVE_HIGH>;
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regulators {
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VDD_IO {
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regulator-name = "VDD_IO";
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regulator-min-microvolt = <1200000>;
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regulator-max-microvolt = <3700000>;
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regulator-initial-mode = <2>;
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regulator-allowed-modes = <2>, <4>;
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regulator-always-on;
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regulator-state-standby {
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regulator-on-in-suspend;
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regulator-mode = <4>;
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};
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regulator-state-mem {
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regulator-off-in-suspend;
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regulator-mode = <4>;
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};
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};
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VDD_DDR {
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regulator-name = "VDD_DDR";
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regulator-min-microvolt = <600000>;
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regulator-max-microvolt = <1850000>;
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regulator-initial-mode = <2>;
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regulator-allowed-modes = <2>, <4>;
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regulator-always-on;
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regulator-state-standby {
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regulator-on-in-suspend;
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regulator-mode = <4>;
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};
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regulator-state-mem {
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regulator-on-in-suspend;
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regulator-mode = <4>;
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};
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};
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VDD_CORE {
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regulator-name = "VDD_CORE";
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regulator-min-microvolt = <600000>;
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regulator-max-microvolt = <1850000>;
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regulator-initial-mode = <2>;
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regulator-allowed-modes = <2>, <4>;
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regulator-always-on;
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regulator-state-standby {
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regulator-on-in-suspend;
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regulator-mode = <4>;
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};
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regulator-state-mem {
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regulator-off-in-suspend;
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regulator-mode = <4>;
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};
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};
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VDD_OTHER {
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regulator-name = "VDD_OTHER";
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regulator-min-microvolt = <600000>;
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regulator-max-microvolt = <1850000>;
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regulator-initial-mode = <2>;
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regulator-allowed-modes = <2>, <4>;
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regulator-always-on;
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regulator-state-standby {
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regulator-on-in-suspend;
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regulator-mode = <4>;
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};
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regulator-state-mem {
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regulator-off-in-suspend;
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regulator-mode = <4>;
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};
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};
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LDO1 {
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regulator-name = "LDO1";
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regulator-min-microvolt = <1200000>;
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regulator-max-microvolt = <3700000>;
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regulator-always-on;
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regulator-state-standby {
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regulator-on-in-suspend;
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};
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regulator-state-mem {
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regulator-off-in-suspend;
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};
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};
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LDO2 {
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regulator-name = "LDO2";
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regulator-min-microvolt = <1200000>;
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regulator-max-microvolt = <3700000>;
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regulator-always-on;
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regulator-state-standby {
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regulator-on-in-suspend;
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};
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regulator-state-mem {
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regulator-off-in-suspend;
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};
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};
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};
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};