[PATCH v3 1/2] dt-bindings: leds: add Texas Instruments TPS6131x flash LED driver

Matthias Fend
2025-04-23T07:48:43Z

Document Texas Instruments TPS61310/TPS61311 flash LED driver devicetree
bindings.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Matthias Fend <matthias.fend@emfend.at>
---
.../devicetree/bindings/leds/ti,tps61310.yaml | 120 +++++++++++++++++++++
1 file changed, 120 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/ti,tps61310.yaml b/Documentation/devicetree/bindings/leds/ti,tps61310.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..1f631889a06a70185bb7ca2cef531e2618f83765
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/ti,tps61310.yaml
@@ -0,0 +1,120 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/ti,tps61310.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments TPS6131X flash LED driver
+
+maintainers:
+ - Matthias Fend <matthias.fend@emfend.at>
+
+description: |
+ The TPS61310/TPS61311 is a flash LED driver with I2C interface.
+ Its power stage is capable of supplying a maximum total current of roughly 1500mA.
+ The TPS6131x provides three constant-current sinks, capable of sinking
+ up to 2 × 400mA (LED1 and LED3) and 800mA (LED2) in flash mode.
+ In torch mode, each sink (LED1, LED2, LED3) supports currents up to 175mA.
+ Since the three current sinks share most of the control components such as
+ flash timer, control logic, safety timer and the operating mode, they cannot
+ be used completely independently of each other. Therefore, only one LED is
+ supported, but the current sinks can be combined accordingly.
+
+ The data sheet can be found at:
+ https://www.ti.com/lit/ds/symlink/tps61310.pdf
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - ti,tps61311
+ - const: ti,tps61310
+ - items:
+ - const: ti,tps61310
+
+ reg:
+ maxItems: 1
+
+ reset-gpios:
+ maxItems: 1
+ description: GPIO connected to NRESET pin
+
+ ti,valley-current-limit:
+ type: boolean
+ description:
+ Reduce the valley peak current limit from 1750mA to 1250mA (TPS61310) or
+ from 2480mA to 1800mA (TPS61311).
+
+ led:
+ type: object
+ $ref: common.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ led-sources:
+ minItems: 1
+ maxItems: 3
+ items:
+ enum: [1, 2, 3]
+
+ led-max-microamp:
+ oneOf:
+ - minimum: 50000
+ maximum: 350000
+ multipleOf: 50000
+ - minimum: 25000
+ maximum: 525000
+ multipleOf: 25000
+
+ flash-max-microamp:
+ oneOf:
+ - minimum: 50000
+ maximum: 800000
+ multipleOf: 50000
+ - minimum: 25000
+ maximum: 1500000
+ multipleOf: 25000
+
+ flash-max-timeout-us:
+ enum: [ 5300, 10700, 16000, 21300, 26600, 32000, 37300, 68200, 71500,
+ 102200, 136300, 170400, 204500, 340800, 579300, 852000 ]
+
+ required:
+ - led-sources
+ - led-max-microamp
+ - flash-max-microamp
+ - flash-max-timeout-us
+
+required:
+ - compatible
+ - reg
+ - led
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/leds/common.h>
+ #include <dt-bindings/gpio/gpio.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ led-controller@33 {
+ compatible = "ti,tps61311", "ti,tps61310";
+ reg = <0x33>;
+
+ reset-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>;
+
+ led {
+ function = LED_FUNCTION_FLASH;
+ color = <LED_COLOR_ID_WHITE>;
+ led-sources = <1>, <2>, <3>;
+ led-max-microamp = <525000>;
+ flash-max-microamp = <1500000>;
+ flash-max-timeout-us = <852000>;
+ };
+ };
+ };

--
2.34.1