1Binding for Samsung S2M and S5M family multi-function device 2============================================================ 3 4This is a part of device tree bindings for S2M and S5M family multi-function 5devices. 6 7The Samsung S2MPA01, S2MPS11/13/14/15, S2MPU02 and S5M8767 is a family 8of multi-function devices which include voltage and current regulators, RTC, 9charger controller, clock outputs and other sub-blocks. It is interfaced 10to the host controller using an I2C interface. Each sub-block is usually 11addressed by the host system using different I2C slave addresses. 12 13 14This document describes bindings for main device node. Optional sub-blocks 15must be a sub-nodes to it. Bindings for them can be found in: 16 - bindings/regulator/samsung,s2mpa01.txt 17 - bindings/regulator/samsung,s2mps11.txt 18 - bindings/regulator/samsung,s5m8767.txt 19 - bindings/clock/samsung,s2mps11.txt 20 21 22Required properties: 23 - compatible: Should be one of the following 24 - "samsung,s2mpa01-pmic", 25 - "samsung,s2mps11-pmic", 26 - "samsung,s2mps13-pmic", 27 - "samsung,s2mps14-pmic", 28 - "samsung,s2mps15-pmic", 29 - "samsung,s2mpu02-pmic", 30 - "samsung,s5m8767-pmic". 31 - reg: Specifies the I2C slave address of the pmic block. It should be 0x66. 32 33Optional properties: 34 - interrupts: Interrupt specifiers for interrupt sources. 35 - samsung,s2mps11-wrstbi-ground: Indicates that WRSTBI pin of PMIC is pulled 36 down. When the system is suspended it will always go down thus triggerring 37 unwanted buck warm reset (setting buck voltages to default values). 38 - samsung,s2mps11-acokb-ground: Indicates that ACOKB pin of S2MPS11 PMIC is 39 connected to the ground so the PMIC must manually set PWRHOLD bit in CTRL1 40 register to turn off the power. Usually the ACOKB is pulled up to VBATT so 41 when PWRHOLD pin goes low, the rising ACOKB will trigger power off. 42 43Example: 44 45 s2mps11_pmic@66 { 46 compatible = "samsung,s2mps11-pmic"; 47 reg = <0x66>; 48 49 s2m_osc: clocks { 50 compatible = "samsung,s2mps11-clk"; 51 #clock-cells = <1>; 52 clock-output-names = "xx", "yy", "zz"; 53 }; 54 55 regulators { 56 ldo1_reg: LDO1 { 57 regulator-name = "VDD_ABB_3.3V"; 58 regulator-min-microvolt = <3300000>; 59 regulator-max-microvolt = <3300000>; 60 }; 61 62 ldo2_reg: LDO2 { 63 regulator-name = "VDD_ALIVE_1.1V"; 64 regulator-min-microvolt = <1100000>; 65 regulator-max-microvolt = <1100000>; 66 regulator-always-on; 67 }; 68 69 buck1_reg: BUCK1 { 70 regulator-name = "vdd_mif"; 71 regulator-min-microvolt = <950000>; 72 regulator-max-microvolt = <1350000>; 73 regulator-always-on; 74 regulator-boot-on; 75 }; 76 77 buck2_reg: BUCK2 { 78 regulator-name = "vdd_arm"; 79 regulator-min-microvolt = <950000>; 80 regulator-max-microvolt = <1350000>; 81 regulator-always-on; 82 regulator-boot-on; 83 regulator-ramp-delay = <50000>; 84 }; 85 }; 86 }; 87