^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) Maxim MAX77693 multi-function device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) MAX77693 is a Multifunction device with the following submodules:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) - PMIC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) - CHARGER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) - LED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) - MUIC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) - HAPTIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) It is interfaced to host controller using i2c.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) This document describes the bindings for the mfd device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) Required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) - compatible : Must be "maxim,max77693".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) - reg : Specifies the i2c slave address of PMIC block.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) - interrupts : This i2c device has an IRQ line connected to the main SoC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) Optional properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) - regulators : The regulators of max77693 have to be instantiated under subnode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) named "regulators" using the following format.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) regulators {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) regulator-compatible = ESAFEOUT1/ESAFEOUT2/CHARGER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) standard regulator constraints[*].
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) [*] refer Documentation/devicetree/bindings/regulator/regulator.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) - haptic : The MAX77693 haptic device utilises a PWM controlled motor to provide
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) users with tactile feedback. PWM period and duty-cycle are varied in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) order to provide the appropriate level of feedback.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) Required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) - compatible : Must be "maxim,max77693-haptic"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) - haptic-supply : power supply for the haptic motor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) [*] refer Documentation/devicetree/bindings/regulator/regulator.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) - pwms : phandle to the physical PWM(Pulse Width Modulation) device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) PWM properties should be named "pwms". And number of cell is different
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) for each pwm device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) To get more information, please refer to documentation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) [*] refer Documentation/devicetree/bindings/pwm/pwm.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) - charger : Node configuring the charger driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) If present, required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) - compatible : Must be "maxim,max77693-charger".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) Optional properties (if not set, defaults will be used):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) - maxim,constant-microvolt : Battery constant voltage in uV. The charger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) will operate in fast charge constant current mode till battery voltage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) reaches this level. Then the charger will switch to fast charge constant
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) voltage mode. Also vsys (system voltage) will be set to this value when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) DC power is supplied but charger is not enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) Valid values: 3650000 - 4400000, step by 25000 (rounded down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) Default: 4200000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) - maxim,min-system-microvolt : Minimal system voltage in uV.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) Valid values: 3000000 - 3700000, step by 100000 (rounded down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) Default: 3600000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) - maxim,thermal-regulation-celsius : Temperature in Celsius for entering
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) high temperature charging mode. If die temperature exceeds this value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) the charging current will be reduced by 105 mA/Celsius.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) Valid values: 70, 85, 100, 115
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) Default: 100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) - maxim,battery-overcurrent-microamp : Overcurrent protection threshold
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) in uA (current from battery to system).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) Valid values: 2000000 - 3500000, step by 250000 (rounded down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) Default: 3500000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) - maxim,charge-input-threshold-microvolt : Threshold voltage in uV for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) triggering input voltage regulation loop. If input voltage decreases
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) below this value, the input current will be reduced to reach the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) threshold voltage.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) Valid values: 4300000, 4700000, 4800000, 4900000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) Default: 4300000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) - led : the LED submodule device node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) There are two LED outputs available - FLED1 and FLED2. Each of them can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) control a separate LED or they can be connected together to double
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) the maximum current for a single connected LED. One LED is represented
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) by one child node.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) Required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) - compatible : Must be "maxim,max77693-led".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) Optional properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) - maxim,boost-mode :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) In boost mode the device can produce up to 1.2A of total current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) on both outputs. The maximum current on each output is reduced
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) to 625mA then. If not enabled explicitly, boost setting defaults to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) LEDS_BOOST_FIXED in case both current sources are used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) Possible values:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) LEDS_BOOST_OFF (0) - no boost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) LEDS_BOOST_ADAPTIVE (1) - adaptive mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) LEDS_BOOST_FIXED (2) - fixed mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) - maxim,boost-mvout : Output voltage of the boost module in millivolts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) Valid values: 3300 - 5500, step by 25 (rounded down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) Default: 3300
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) - maxim,mvsys-min : Low input voltage level in millivolts. Flash is not fired
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if chip estimates that system voltage could drop below this level due
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) to flash power consumption.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) Valid values: 2400 - 3400, step by 33 (rounded down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) Default: 2400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) Required properties for the LED child node:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) - led-sources : see Documentation/devicetree/bindings/leds/common.txt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) device current output identifiers: 0 - FLED1, 1 - FLED2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) - led-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) Valid values for a LED connected to one FLED output:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 15625 - 250000, step by 15625 (rounded down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) Valid values for a LED connected to both FLED outputs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 15625 - 500000, step by 15625 (rounded down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) - flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) Valid values for a single LED connected to one FLED output
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) (boost mode must be turned off):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 15625 - 1000000, step by 15625 (rounded down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) Valid values for a single LED connected to both FLED outputs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 15625 - 1250000, step by 15625 (rounded down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) Valid values for two LEDs case:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 15625 - 625000, step by 15625 (rounded down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) - flash-max-timeout-us : see Documentation/devicetree/bindings/leds/common.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) Valid values: 62500 - 1000000, step by 62500 (rounded down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) Optional properties for the LED child node:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) - label : see Documentation/devicetree/bindings/leds/common.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) Optional nodes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) - max77693-muic :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) Node used only by extcon consumers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) Required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) - compatible : "maxim,max77693-muic"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #include <dt-bindings/leds/common.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) max77693@66 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) compatible = "maxim,max77693";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) reg = <0x66>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) interrupt-parent = <&gpx1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) interrupts = <5 2>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) regulators {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) esafeout@1 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) regulator-compatible = "ESAFEOUT1";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) regulator-name = "ESAFEOUT1";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) regulator-boot-on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) esafeout@2 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) regulator-compatible = "ESAFEOUT2";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) regulator-name = "ESAFEOUT2";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) charger@0 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) regulator-compatible = "CHARGER";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) regulator-name = "CHARGER";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) regulator-min-microamp = <60000>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) regulator-max-microamp = <2580000>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) regulator-boot-on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) haptic {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) compatible = "maxim,max77693-haptic";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) haptic-supply = <&haptic_supply>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) pwms = <&pwm 0 40000 0>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) pwm-names = "haptic";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) charger {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) compatible = "maxim,max77693-charger";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) maxim,constant-microvolt = <4200000>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) maxim,min-system-microvolt = <3600000>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) maxim,thermal-regulation-celsius = <75>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) maxim,battery-overcurrent-microamp = <3000000>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) maxim,charge-input-threshold-microvolt = <4300000>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) led {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) compatible = "maxim,max77693-led";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) maxim,boost-mode = <LEDS_BOOST_FIXED>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) maxim,boost-mvout = <5000>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) maxim,mvsys-min = <2400>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) camera_flash: flash-led {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) label = "max77693-flash";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) led-sources = <0>, <1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) led-max-microamp = <500000>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) flash-max-microamp = <1250000>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) flash-max-timeout-us = <1000000>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) };
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