diff options
| -rw-r--r-- | Documentation/devicetree/bindings/mfd/s2mps11.txt | 89 | ||||
| -rw-r--r-- | drivers/mfd/sec-core.c | 3 |
2 files changed, 92 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mfd/s2mps11.txt b/Documentation/devicetree/bindings/mfd/s2mps11.txt new file mode 100644 index 000000000000..36e051b223c8 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/s2mps11.txt @@ -0,0 +1,89 @@ + +* Samsung S2MPS11 Voltage and Current Regulator + +The Samsung S2MP211 is a multi-function device which includes voltage and +current regulators, RTC, charger controller and other sub-blocks. It is +interfaced to the host controller using a I2C interface. Each sub-block is +addressed by the host system using different I2C slave address. + +Required properties: +- compatible: Should be "samsung,s2mps11-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. + +Optional nodes: +- regulators: The regulators of s2mps11 that have to be instantiated should be +included in a sub-node named 'regulators'. Regulator nodes included in this +sub-node should be of the format as listed below. + + regulator_name { + [standard regulator constraints....]; + }; + + regulator-ramp-delay for BUCKs = [6250/12500/25000(default)/50000] uV/us + + BUCK[2/3/4/6] supports disabling ramp delay on hardware, so explictly + regulator-ramp-delay = <0> can be used for them to disable ramp delay. + In absence of regulator-ramp-delay property, default ramp delay will be used. + +NOTE: Some BUCKs share the ramp rate setting i.e. same ramp value will be set +for a particular group of BUCKs. So provide same regulator-ramp-delay<value>. +Grouping of BUCKs sharing ramp rate setting is as follow : BUCK[1, 6], +BUCK[3, 4], and BUCK[7, 8, 10] + +The regulator constraints inside the regulator nodes use the standard regulator +bindings which are documented elsewhere. + +The following are the names of the regulators that the s2mps11 pmic block +supports. Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number +as per the datasheet of s2mps11. + + - LDOn + - valid values for n are 1 to 28 + - Example: LDO0, LD01, LDO28 + - BUCKn + - valid values for n are 1 to 9. + - Example: BUCK1, BUCK2, BUCK9 + +Example: + + s2mps11_pmic@66 { + compatible = "samsung,s2mps11-pmic"; + reg = <0x66>; + + 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>; + }; + }; + }; diff --git a/drivers/mfd/sec-core.c b/drivers/mfd/sec-core.c index 79767681483a..e4930018005e 100644 --- a/drivers/mfd/sec-core.c +++ b/drivers/mfd/sec-core.c @@ -69,6 +69,9 @@ static struct of_device_id sec_dt_match[] = { { .compatible = "samsung,s5m8767-pmic", .data = (void *)S5M8767X, }, + { .compatible = "samsung,s2mps11-pmic", + .data = (void *)S2MPS11X, + }, {}, }; #endif |