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| 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 <[email protected]> |
| 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 | +... |
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