This patch describes the compatible and the device tree
bindings necessary for the MCP16502 PMIC.
Signed-off-by: Andrei Stefanescu <andrei.stefanescu@xxxxxxxxxxxxx>
---
.../bindings/regulator/mcp16502-regulator.txt | 143 +++++++++++++++++++++
1 file changed, 143 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/mcp16502-regulator.txt
diff --git a/Documentation/devicetree/bindings/regulator/mcp16502-regulator.txt b/Documentation/devicetree/bindings/regulator/mcp16502-regulator.txt
new file mode 100644
index 0000000..b8f843f
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/mcp16502-regulator.txt
@@ -0,0 +1,143 @@
+MCP16502 PMIC
+
+Required properties:
+- compatible: "microchip,mcp16502"
+- reg: I2C slave address
+- lpm-gpios: GPIO for LPM pin. Note that this GPIO *must* remain high during
+ suspend-to-ram, keeping the PMIC into HIBERNATE mode.
+- regulators: A node that houses a sub-node for each regulator within
+ the device. Each sub-node is identified using the node's
+ name. The content of each sub-node is defined by the
+ standard binding for regulators; see regulator.txt.
+
+Regualtors of MCP16502 PMIC:
+1) VDD_IO - Buck (1.2 - 3.7 V)
+2) VDD_DDR - Buck (0.6 - 1.85 V)
+3) VDD_CORE - Buck (0.6 - 1.85 V)
+4) VDD_OTHER - BUCK (0.6 - 1.85 V)
+5) LDO1 - LDO (1.2 - 3.7 V)
+6) LDO2 - LDO (1.2 - 3.7 V)
+
+Regulator modes:
+2 - FPWM: higher precision, higher consumption
+4 - AutoPFM: lower precision, lower consumption
+
+Each regulator is defined using the standard binding for regulators.
+
+Example:
+
+mcp16502@5b {
+ compatible = "microchip,mcp16502";
+ reg = <0x5b>;
+ status = "okay";
+ lpm-gpios = <&pioBU 7 GPIO_ACTIVE_HIGH>;
+
+ regulators {
+ VDD_IO {
+ regulator-name = "VDD_IO";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3700000>;
+ regulator-initial-mode = <2>;
+ regulator-allowed-modes = <2>, <4>;
+ regulator-always-on;
+
+ regulator-state-standby {
+ regulator-on-in-suspend;
+ regulator-mode = <4>;
+ };
+
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ regulator-mode = <4>;
+ };
+ };
+
+ VDD_DDR {
+ regulator-name = "VDD_DDR";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <1850000>;
+ regulator-initial-mode = <2>;
+ regulator-allowed-modes = <2>, <4>;
+ regulator-always-on;
+
+ regulator-state-standby {
+ regulator-on-in-suspend;
+ regulator-mode = <4>;
+ };
+
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-mode = <4>;
+ };
+ };
+
+ VDD_CORE {
+ regulator-name = "VDD_CORE";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <1850000>;
+ regulator-initial-mode = <2>;
+ regulator-allowed-modes = <2>, <4>;
+ regulator-always-on;
+
+ regulator-state-standby {
+ regulator-on-in-suspend;
+ regulator-mode = <4>;
+ };
+
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ regulator-mode = <4>;
+ };
+ };
+
+ VDD_OTHER {
+ regulator-name = "VDD_OTHER";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <1850000>;
+ regulator-initial-mode = <2>;
+ regulator-allowed-modes = <2>, <4>;
+ regulator-always-on;
+
+ regulator-state-standby {
+ regulator-on-in-suspend;
+ regulator-mode = <4>;
+ };
+
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ regulator-mode = <4>;
+ };
+ };
+
+ LDO1 {
+ regulator-name = "LDO1";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3700000>;
+ regulator-always-on;
+
+ regulator-state-standby {
+ regulator-on-in-suspend;
+ };
+
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+
+ LDO2 {
+ regulator-name = "LDO2";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3700000>;
+ regulator-always-on;
+
+ regulator-state-standby {
+ regulator-on-in-suspend;
+ };
+
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+
+ };
+};
--
2.7.4
