forked from Minki/linux
204ae2963e
This patch adds the basic and regulator bindings for the X-Powers AXP806 PMIC. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
183 lines
6.3 KiB
Plaintext
183 lines
6.3 KiB
Plaintext
AXP family PMIC device tree bindings
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The axp20x family current members :
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axp152 (X-Powers)
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axp202 (X-Powers)
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axp209 (X-Powers)
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axp221 (X-Powers)
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axp223 (X-Powers)
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axp809 (X-Powers)
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Required properties:
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- compatible: "x-powers,axp152", "x-powers,axp202", "x-powers,axp209",
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"x-powers,axp221", "x-powers,axp223", "x-powers,axp806",
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"x-powers,axp809"
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- reg: The I2C slave address or RSB hardware address for the AXP chip
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- interrupt-parent: The parent interrupt controller
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- interrupts: SoC NMI / GPIO interrupt connected to the PMIC's IRQ pin
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- interrupt-controller: The PMIC has its own internal IRQs
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- #interrupt-cells: Should be set to 1
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Optional properties:
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- x-powers,dcdc-freq: defines the work frequency of DC-DC in KHz
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AXP152/20X: range: 750-1875, Default: 1.5 MHz
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AXP22X/80X: range: 1800-4050, Default: 3 MHz
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- x-powers,drive-vbus-en: axp221 / axp223 only boolean, set this when the
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N_VBUSEN pin is used as an output pin to control an external
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regulator to drive the OTG VBus, rather then as an input pin
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which signals whether the board is driving OTG VBus or not.
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- <input>-supply: a phandle to the regulator supply node. May be omitted if
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inputs are unregulated, such as using the IPSOUT output
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from the PMIC.
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- regulators: A node that houses a sub-node for each regulator. Regulators
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not used but preferred to be managed by the OS should be
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listed as well.
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See Documentation/devicetree/bindings/regulator/regulator.txt
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for more information on standard regulator bindings.
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Optional properties for DCDC regulators:
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- x-powers,dcdc-workmode: 1 for PWM mode, 0 for AUTO (PWM/PFM) mode
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Default: Current hardware setting
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The DCDC regulators work in a mixed PWM/PFM mode,
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using PFM under light loads and switching to PWM
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for heavier loads. Forcing PWM mode trades efficiency
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under light loads for lower output noise. This
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probably makes sense for HiFi audio related
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applications that aren't battery constrained.
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AXP202/AXP209 regulators, type, and corresponding input supply names:
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Regulator Type Supply Name Notes
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--------- ---- ----------- -----
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DCDC2 : DC-DC buck : vin2-supply
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DCDC3 : DC-DC buck : vin3-supply
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LDO1 : LDO : acin-supply : always on
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LDO2 : LDO : ldo24in-supply : shared supply
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LDO3 : LDO : ldo3in-supply
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LDO4 : LDO : ldo24in-supply : shared supply
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LDO5 : LDO : ldo5in-supply
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AXP221/AXP223 regulators, type, and corresponding input supply names:
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Regulator Type Supply Name Notes
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--------- ---- ----------- -----
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DCDC1 : DC-DC buck : vin1-supply
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DCDC2 : DC-DC buck : vin2-supply
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DCDC3 : DC-DC buck : vin3-supply
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DCDC4 : DC-DC buck : vin4-supply
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DCDC5 : DC-DC buck : vin5-supply
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DC1SW : On/Off Switch : : DCDC1 secondary output
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DC5LDO : LDO : : input from DCDC5
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ALDO1 : LDO : aldoin-supply : shared supply
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ALDO2 : LDO : aldoin-supply : shared supply
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ALDO3 : LDO : aldoin-supply : shared supply
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DLDO1 : LDO : dldoin-supply : shared supply
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DLDO2 : LDO : dldoin-supply : shared supply
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DLDO3 : LDO : dldoin-supply : shared supply
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DLDO4 : LDO : dldoin-supply : shared supply
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ELDO1 : LDO : eldoin-supply : shared supply
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ELDO2 : LDO : eldoin-supply : shared supply
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ELDO3 : LDO : eldoin-supply : shared supply
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LDO_IO0 : LDO : ips-supply : GPIO 0
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LDO_IO1 : LDO : ips-supply : GPIO 1
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RTC_LDO : LDO : ips-supply : always on
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DRIVEVBUS : Enable output : drivevbus-supply : external regulator
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AXP806 regulators, type, and corresponding input supply names:
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Regulator Type Supply Name Notes
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--------- ---- ----------- -----
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DCDCA : DC-DC buck : vina-supply : poly-phase capable
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DCDCB : DC-DC buck : vinb-supply : poly-phase capable
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DCDCC : DC-DC buck : vinc-supply : poly-phase capable
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DCDCD : DC-DC buck : vind-supply : poly-phase capable
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DCDCE : DC-DC buck : vine-supply : poly-phase capable
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ALDO1 : LDO : aldoin-supply : shared supply
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ALDO2 : LDO : aldoin-supply : shared supply
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ALDO3 : LDO : aldoin-supply : shared supply
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BLDO1 : LDO : bldoin-supply : shared supply
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BLDO2 : LDO : bldoin-supply : shared supply
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BLDO3 : LDO : bldoin-supply : shared supply
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BLDO4 : LDO : bldoin-supply : shared supply
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CLDO1 : LDO : cldoin-supply : shared supply
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CLDO2 : LDO : cldoin-supply : shared supply
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CLDO3 : LDO : cldoin-supply : shared supply
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SW : On/Off Switch : swin-supply
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Additionally, the AXP806 DC-DC regulators support poly-phase arrangements
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for higher output current. The possible groupings are: A+B, A+B+C, D+E.
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AXP809 regulators, type, and corresponding input supply names:
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Regulator Type Supply Name Notes
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--------- ---- ----------- -----
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DCDC1 : DC-DC buck : vin1-supply
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DCDC2 : DC-DC buck : vin2-supply
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DCDC3 : DC-DC buck : vin3-supply
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DCDC4 : DC-DC buck : vin4-supply
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DCDC5 : DC-DC buck : vin5-supply
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DC1SW : On/Off Switch : : DCDC1 secondary output
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DC5LDO : LDO : : input from DCDC5
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ALDO1 : LDO : aldoin-supply : shared supply
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ALDO2 : LDO : aldoin-supply : shared supply
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ALDO3 : LDO : aldoin-supply : shared supply
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DLDO1 : LDO : dldoin-supply : shared supply
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DLDO2 : LDO : dldoin-supply : shared supply
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ELDO1 : LDO : eldoin-supply : shared supply
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ELDO2 : LDO : eldoin-supply : shared supply
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ELDO3 : LDO : eldoin-supply : shared supply
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LDO_IO0 : LDO : ips-supply : GPIO 0
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LDO_IO1 : LDO : ips-supply : GPIO 1
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RTC_LDO : LDO : ips-supply : always on
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SW : On/Off Switch : swin-supply
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Example:
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axp209: pmic@34 {
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compatible = "x-powers,axp209";
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reg = <0x34>;
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interrupt-parent = <&nmi_intc>;
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interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
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interrupt-controller;
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#interrupt-cells = <1>;
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regulators {
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x-powers,dcdc-freq = <1500>;
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vdd_cpu: dcdc2 {
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regulator-always-on;
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regulator-min-microvolt = <1000000>;
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regulator-max-microvolt = <1450000>;
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regulator-name = "vdd-cpu";
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};
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vdd_int_dll: dcdc3 {
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regulator-always-on;
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regulator-min-microvolt = <1000000>;
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regulator-max-microvolt = <1400000>;
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regulator-name = "vdd-int-dll";
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};
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vdd_rtc: ldo1 {
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regulator-always-on;
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regulator-min-microvolt = <1200000>;
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regulator-max-microvolt = <1400000>;
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regulator-name = "vdd-rtc";
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};
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avcc: ldo2 {
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regulator-always-on;
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regulator-min-microvolt = <2700000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "avcc";
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};
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ldo3 {
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/* unused but preferred to be managed by OS */
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};
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};
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};
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