Add bindings for the LM3533 - a complete power source for backlight, keypad, and indicator LEDs in smartphone handsets. The high-voltage inductive boost converter provides the power for two series LED strings display backlight and keypad functions. Signed-off-by: Svyatoslav Ryhel <clamor95@xxxxxxxxx> --- .../devicetree/bindings/mfd/ti,lm3533.yaml | 221 ++++++++++++++++++ include/dt-bindings/mfd/lm3533.h | 19 ++ 2 files changed, 240 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/ti,lm3533.yaml create mode 100644 include/dt-bindings/mfd/lm3533.h diff --git a/Documentation/devicetree/bindings/mfd/ti,lm3533.yaml b/Documentation/devicetree/bindings/mfd/ti,lm3533.yaml new file mode 100644 index 000000000000..d0307e5894f8 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/ti,lm3533.yaml @@ -0,0 +1,221 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/ti,lm3533.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TI LM3533 Complete Lighting Power Solution + +description: | + The LM3533 is a complete power source for backlight, + keypad, and indicator LEDs in smartphone handsets. The + high-voltage inductive boost converter provides the + power for two series LED strings display backlight and + keypad functions. + https://www.ti.com/product/LM3533 + +maintainers: + - Johan Hovold <jhovold@xxxxxxxxx> + +properties: + compatible: + const: ti,lm3533 + + reg: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + enable-gpios: + description: GPIO to use to enable/disable the backlight (HWEN pin). + maxItems: 1 + + ti,boost-ovp: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Boost OVP select (16V, 24V, 32V, 40V) + enum: [ 0, 1, 2, 3 ] + default: 0 + + ti,boost-freq: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Boost frequency select (500KHz or 1MHz) + enum: [ 0, 1 ] + default: 0 + +required: + - compatible + - reg + - '#address-cells' + - '#size-cells' + - enable-gpios + +patternProperties: + "^backlight@[01]$": + type: object + description: + Properties for a backlight device. + + properties: + compatible: + const: lm3533-backlight + + reg: + description: | + The control bank that is used to program the two current sinks. The + LM3533 has two control banks (A and B) and are represented as 0 or 1 + in this property. The two current sinks can be controlled + independently with both banks, or bank A can be configured to control + both sinks with the led-sources property. + minimum: 0 + maximum: 1 + + max-current-microamp: + description: + Maximum current in µA with a 800 µA step. + enum: [ 5000, 5800, 6600, 7400, 8200, 9000, 9800, + 10600, 11400, 12200, 13000, 13800, 14600, + 15400, 16200, 17000, 17800, 18600, 19400, + 20200, 21000, 21800, 22600, 23400, 24200, + 25000, 25800, 26600, 27400, 28200, 29000, + 29800 ] + default: 5000 + + default-brightness: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Default brightness level on boot. + minimum: 0 + maximum: 255 + default: 255 + + pwm: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Default pwm level on boot. + minimum: 0 + maximum: 63 + default: 0 + + required: + - compatible + - reg + + additionalProperties: false + + "^led@[0-3]$": + type: object + description: + Properties for a led device. + + properties: + compatible: + const: lm3533-leds + + reg: + description: + 4 led banks + minimum: 0 + maximum: 3 + + max-current-microamp: + description: + Maximum current in µA with a 800 µA step. + enum: [ 5000, 5800, 6600, 7400, 8200, 9000, 9800, + 10600, 11400, 12200, 13000, 13800, 14600, + 15400, 16200, 17000, 17800, 18600, 19400, + 20200, 21000, 21800, 22600, 23400, 24200, + 25000, 25800, 26600, 27400, 28200, 29000, + 29800 ] + default: 5000 + + default-trigger: + $ref: /schemas/types.yaml#/definitions/string + description: | + This parameter, if present, is a string defining + the trigger assigned to the LED. Check linux,default-trigger. + + pwm: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Default pwm level on boot. + minimum: 0 + maximum: 63 + default: 0 + + required: + - compatible + - reg + + additionalProperties: false + + "^light-sensor@[0]$": + type: object + description: + Properties for an illumination sensor. + + properties: + compatible: + const: lm3533-als + + reg: + const: 0 + + resistor-value: + $ref: /schemas/types.yaml#/definitions/uint32 + description: | + PWM resistor value a linear step in currents + of 10 µA per code based upon 2V/R_ALS. + minimum: 1 + maximum: 127 + default: 1 + + pwm-mode: + type: boolean + description: Mode in which ALS is running + + required: + - compatible + - reg + + additionalProperties: false + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/mfd/lm3533.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + led-controller@36 { + compatible = "ti,lm3533"; + reg = <0x36>; + + enable-gpios = <&gpio 110 GPIO_ACTIVE_HIGH>; + + ti,boost-ovp = <LM3533_BOOST_OVP_24V>; + ti,boost-freq = <LM3533_BOOST_FREQ_500KHZ>; + + #address-cells = <1>; + #size-cells = <0>; + + backlight@0 { + compatible = "lm3533-backlight"; + reg = <0>; + + max-current-microamp = <23400>; + default-brightness = <113>; + pwm = <0x00>; + }; + }; + }; +... diff --git a/include/dt-bindings/mfd/lm3533.h b/include/dt-bindings/mfd/lm3533.h new file mode 100644 index 000000000000..929988190c52 --- /dev/null +++ b/include/dt-bindings/mfd/lm3533.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* + * This header provides macros for TI LM3533 device bindings. + */ + +#ifndef _DT_BINDINGS_MFD_LM3533_H +#define _DT_BINDINGS_MFD_LM3533_H + +/* LM3533 boost freq */ +#define LM3533_BOOST_FREQ_500KHZ 0 +#define LM3533_BOOST_FREQ_1000KHZ 1 + +/* LM3533 boost ovp */ +#define LM3533_BOOST_OVP_16V 0 +#define LM3533_BOOST_OVP_24V 1 +#define LM3533_BOOST_OVP_32V 2 +#define LM3533_BOOST_OVP_40V 3 + +#endif -- 2.43.0
