Messages in this thread Patch in this message | | | From | Yadwinder Singh Brar <> | Subject | [PATCH 3/4] mfd: s2mps11: Add device tree support | Date | Mon, 24 Jun 2013 16:50:57 +0530 |
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This patch adds DT compatible string for s2mps11 and binding documentation.
Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com> --- Documentation/devicetree/bindings/mfd/s2mps11.txt | 98 +++++++++++++++++++++ drivers/mfd/sec-core.c | 3 + 2 files changed, 101 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/mfd/s2mps11.txt
diff --git a/Documentation/devicetree/bindings/mfd/s2mps11.txt b/Documentation/devicetree/bindings/mfd/s2mps11.txt new file mode 100644 index 0000000..7984625 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/s2mps11.txt @@ -0,0 +1,98 @@ + +* Samsung S2MPS11 Voltage and Current Regulator + +The Samsung S2MP211 is a multi-function device which includes volatage 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-disable]; + }; + + regulator-ramp-delay for BUCKs = [6250/12500/25000(default)/50000] uV/us + + Optional property for BUCK[2/3/4/6] only: + regulator-ramp-disable: boolean, disables ramp delay on hardware. + +NOTE: Some BUCKs shares 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>; + }; + + buck3_reg: BUCK3 { + regulator-name = "vdd_xxx"; + regulator-min-microvolt = <950000>; + regulator-max-microvolt = <1350000>; + regulator-always-on; + regulator-boot-on; + regulator-ramp-disable; + }; + }; + }; diff --git a/drivers/mfd/sec-core.c b/drivers/mfd/sec-core.c index 77ee26e..760da8a 100644 --- a/drivers/mfd/sec-core.c +++ b/drivers/mfd/sec-core.c @@ -66,6 +66,9 @@ static struct of_device_id sec_dt_match[] = { { .compatible = "samsung,s5m8767-pmic", .data = (void *)S5M8767X, }, + { .compatible = "samsung,s2mps11-pmic", + .data = (void *)S2MPS11X, + }, {}, }; #endif -- 1.7.0.4
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