| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/leds/kinetic,ktd2692.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: KTD2692 Flash LED Driver from Kinetic Technologies |
| 8 | |
| 9 | maintainers: |
| 10 | - Markuss Broks <markuss.broks@gmail.com> |
| 11 | |
| 12 | description: | |
| 13 | KTD2692 is the ideal power solution for high-power flash LEDs. |
| 14 | It uses ExpressWire single-wire programming for maximum flexibility. |
| 15 | |
| 16 | The ExpressWire interface through CTRL pin can control LED on/off and |
| 17 | enable/disable the IC, Movie(max 1/3 of Flash current) / Flash mode current, |
| 18 | Flash timeout, LVP(low voltage protection). |
| 19 | |
| 20 | Also, When the AUX pin is pulled high while CTRL pin is high, |
| 21 | LED current will be ramped up to the flash-mode current level. |
| 22 | |
| 23 | properties: |
| 24 | compatible: |
| 25 | const: kinetic,ktd2692 |
| 26 | |
| 27 | ctrl-gpios: |
| 28 | maxItems: 1 |
| 29 | description: Specifier of the GPIO connected to CTRL pin. |
| 30 | |
| 31 | aux-gpios: |
| 32 | maxItems: 1 |
| 33 | description: Specifier of the GPIO connected to CTRL pin. |
| 34 | |
| 35 | vin-supply: |
| 36 | description: LED supply (2.7V to 5.5V). |
| 37 | |
| 38 | led: |
| 39 | type: object |
| 40 | $ref: common.yaml# |
| 41 | description: Properties for the LED. |
| 42 | properties: |
| 43 | function: true |
| 44 | color: true |
| 45 | flash-max-timeout-us: |
| 46 | description: Flash LED maximum timeout. |
| 47 | |
| 48 | led-max-microamp: |
| 49 | maximum: 300000 |
| 50 | description: Minimum Threshold for Timer protection |
| 51 | is defined internally (Maximum 300mA). |
| 52 | |
| 53 | flash-max-microamp: |
| 54 | maximum: 300000 |
| 55 | description: Flash LED maximum current |
| 56 | Formula - I(uA) = 15000000 / Rset. |
| 57 | |
| 58 | additionalProperties: false |
| 59 | |
| 60 | required: |
| 61 | - compatible |
| 62 | - ctrl-gpios |
| 63 | - led |
| 64 | |
| 65 | additionalProperties: false |
| 66 | |
| 67 | examples: |
| 68 | - | |
| 69 | #include <dt-bindings/gpio/gpio.h> |
| 70 | #include <dt-bindings/leds/common.h> |
| 71 | |
| 72 | ktd2692 { |
| 73 | compatible = "kinetic,ktd2692"; |
| 74 | ctrl-gpios = <&gpc0 1 0>; |
| 75 | aux-gpios = <&gpc0 2 0>; |
| 76 | vin-supply = <&vbat>; |
| 77 | |
| 78 | led { |
| 79 | function = LED_FUNCTION_FLASH; |
| 80 | color = <LED_COLOR_ID_WHITE>; |
| 81 | flash-max-timeout-us = <250000>; |
| 82 | flash-max-microamp = <150000>; |
| 83 | led-max-microamp = <25000>; |
| 84 | }; |
| 85 | }; |
| 86 | |
| 87 | ... |