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Diffstat (limited to 'Documentation/devicetree/bindings/mfd/samsung,sec-core.txt')
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diff --git a/Documentation/devicetree/bindings/mfd/samsung,sec-core.txt b/Documentation/devicetree/bindings/mfd/samsung,sec-core.txt new file mode 100644 index 000000000000..cdd079bfc287 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/samsung,sec-core.txt @@ -0,0 +1,88 @@ +Binding for Samsung S2M and S5M family multi-function device +============================================================ + +This is a part of device tree bindings for S2M and S5M family multi-function +devices. + +The Samsung S2MPA01, S2MPS11/13/14/15, S2MPU02 and S5M8767 is a family +of multi-function devices which include voltage and current regulators, RTC, +charger controller, clock outputs and other sub-blocks. It is interfaced +to the host controller using an I2C interface. Each sub-block is usually +addressed by the host system using different I2C slave addresses. + + +This document describes bindings for main device node. Optional sub-blocks +must be a sub-nodes to it. Bindings for them can be found in: + - bindings/regulator/samsung,s2mpa01.txt + - bindings/regulator/samsung,s2mps11.txt + - bindings/regulator/samsung,s5m8767.txt + - bindings/clock/samsung,s2mps11.txt + + +Required properties: + - compatible: Should be one of the following + - "samsung,s2mpa01-pmic", + - "samsung,s2mps11-pmic", + - "samsung,s2mps13-pmic", + - "samsung,s2mps14-pmic", + - "samsung,s2mps15-pmic", + - "samsung,s2mpu02-pmic", + - "samsung,s5m8767-pmic". + - reg: Specifies the I2C slave address of the pmic block. It should be 0x66. + +Optional properties: + - interrupt-parent: Specifies the phandle of the interrupt controller to which + the interrupts from s2mps11 are delivered to. + - interrupts: Interrupt specifiers for interrupt sources. + - samsung,s2mps11-wrstbi-ground: Indicates that WRSTBI pin of PMIC is pulled + down. When the system is suspended it will always go down thus triggerring + unwanted buck warm reset (setting buck voltages to default values). + - samsung,s2mps11-acokb-ground: Indicates that ACOKB pin of S2MPS11 PMIC is + connected to the ground so the PMIC must manually set PWRHOLD bit in CTRL1 + register to turn off the power. Usually the ACOKB is pulled up to VBATT so + when PWRHOLD pin goes low, the rising ACOKB will trigger power off. + +Example: + + s2mps11_pmic@66 { + compatible = "samsung,s2mps11-pmic"; + reg = <0x66>; + + s2m_osc: clocks { + compatible = "samsung,s2mps11-clk"; + #clock-cells = <1>; + clock-output-names = "xx", "yy", "zz"; + }; + + regulators { + ldo1_reg: LDO1 { + regulator-name = "VDD_ABB_3.3V"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + }; + + ldo2_reg: LDO2 { + regulator-name = "VDD_ALIVE_1.1V"; + regulator-min-microvolt = <1100000>; + regulator-max-microvolt = <1100000>; + regulator-always-on; + }; + + buck1_reg: BUCK1 { + regulator-name = "vdd_mif"; + regulator-min-microvolt = <950000>; + regulator-max-microvolt = <1350000>; + regulator-always-on; + regulator-boot-on; + }; + + buck2_reg: BUCK2 { + regulator-name = "vdd_arm"; + regulator-min-microvolt = <950000>; + regulator-max-microvolt = <1350000>; + regulator-always-on; + regulator-boot-on; + regulator-ramp-delay = <50000>; + }; + }; + }; |