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