These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / regulator / max77686.txt

diff --git a/kernel/Documentation/devicetree/bindings/regulator/max77686.txt b/kernel/Documentation/devicetree/bindings/regulator/max77686.txt
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+Binding for Maxim MAX77686 regulators
+
+This is a part of the device tree bindings of MAX77686 multi-function device.
+More information can be found in ../mfd/max77686.txt file.
+
+The MAX77686 PMIC has 9 high-efficiency Buck and 26 Low-DropOut (LDO)
+regulators that can be controlled over I2C.
+
+Following properties should be present in main device node of the MFD chip.
+
+Optional node:
+- voltage-regulators : The regulators of max77686 have to be instantiated
+  under subnode named "voltage-regulators" using the following format.
+
+       regulator_name {
+               regulator-compatible = LDOn/BUCKn
+               standard regulator constraints....
+       };
+       refer Documentation/devicetree/bindings/regulator/regulator.txt
+
+  The regulator node's name should be initialized with a string
+to get matched with their hardware counterparts as follow:
+
+       -LDOn   :       for LDOs, where n can lie in range 1 to 26.
+                       example: LDO1, LDO2, LDO26.
+       -BUCKn  :       for BUCKs, where n can lie in range 1 to 9.
+                       example: BUCK1, BUCK5, BUCK9.
+
+  Regulators which can be turned off during system suspend:
+       -LDOn   :       2, 6-8, 10-12, 14-16,
+       -BUCKn  :       1-4.
+  Use standard regulator bindings for it ('regulator-off-in-suspend').
+
+  LDO20, LDO21, LDO22, BUCK8 and BUCK9 can be configured to GPIO enable
+  control. To turn this feature on this property must be added to the regulator
+  sub-node:
+       - maxim,ena-gpios :     one GPIO specifier enable control (the gpio
+                               flags are actually ignored and always
+                               ACTIVE_HIGH is used)
+
+Example:
+
+       max77686: pmic@09 {
+               compatible = "maxim,max77686";
+               interrupt-parent = <&wakeup_eint>;
+               interrupts = <26 IRQ_TYPE_NONE>;
+               reg = <0x09>;
+
+               voltage-regulators {
+                       ldo11_reg: LDO11 {
+                               regulator-name = "vdd_ldo11";
+                               regulator-min-microvolt = <1900000>;
+                               regulator-max-microvolt = <1900000>;
+                               regulator-always-on;
+                       };
+
+                       buck1_reg: BUCK1 {
+                               regulator-name = "vdd_mif";
+                               regulator-min-microvolt = <950000>;
+                               regulator-max-microvolt = <1300000>;
+                               regulator-always-on;
+                               regulator-boot-on;
+                       };
+
+                       buck9_reg: BUCK9 {
+                               regulator-name = "CAM_ISP_CORE_1.2V";
+                               regulator-min-microvolt = <1000000>;
+                               regulator-max-microvolt = <1200000>;
+                               maxim,ena-gpios = <&gpm0 3 GPIO_ACTIVE_HIGH>;
+                       };
+       };