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authorSascha Hauer <s.hauer@pengutronix.de>2021-02-01 12:45:00 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2021-02-01 12:45:00 +0100
commit2d168d3f68a7826cda53c8bb713965953b2c93fc (patch)
tree9566f15acdce2ab58d3db947907c143e5595ac89 /dts/Bindings/leds
parenta11bb31e2d7f1958fcacd2954f6725425743df3c (diff)
downloadbarebox-2d168d3f68a7826cda53c8bb713965953b2c93fc.tar.gz
barebox-2d168d3f68a7826cda53c8bb713965953b2c93fc.tar.xz
dts: update to v5.11-rc6
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/leds')
-rw-r--r--dts/Bindings/leds/richtek,rt8515.yaml111
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diff --git a/dts/Bindings/leds/richtek,rt8515.yaml b/dts/Bindings/leds/richtek,rt8515.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/richtek,rt8515.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT8515 1.5A dual channel LED driver
+
+maintainers:
+ - Linus Walleij <linus.walleij@linaro.org>
+
+description: |
+ The Richtek RT8515 is a dual channel (two mode) LED driver that
+ supports driving a white LED in flash or torch mode. The maximum
+ current for each mode is defined in hardware using two resistors
+ RFS and RTS.
+
+properties:
+ compatible:
+ const: richtek,rt8515
+
+ enf-gpios:
+ maxItems: 1
+ description: A connection to the 'ENF' (enable flash) pin.
+
+ ent-gpios:
+ maxItems: 1
+ description: A connection to the 'ENT' (enable torch) pin.
+
+ richtek,rfs-ohms:
+ minimum: 7680
+ maximum: 367000
+ description: The resistance value of the RFS resistor. This
+ resistors limits the maximum flash current. This must be set
+ for the property flash-max-microamp to work, the RFS resistor
+ defines the range of the dimmer setting (brightness) of the
+ flash LED.
+
+ richtek,rts-ohms:
+ minimum: 7680
+ maximum: 367000
+ description: The resistance value of the RTS resistor. This
+ resistors limits the maximum torch current. This must be set
+ for the property torch-max-microamp to work, the RTS resistor
+ defines the range of the dimmer setting (brightness) of the
+ torch LED.
+
+ led:
+ type: object
+ $ref: common.yaml#
+ properties:
+ function: true
+ color: true
+ flash-max-timeout-us: true
+
+ flash-max-microamp:
+ maximum: 700000
+ description: The maximum current for flash mode
+ is hardwired to the component using the RFS resistor to
+ ground. The maximum hardware current setting is calculated
+ according to the formula Imax = 5500 / RFS. The lowest
+ allowed resistance value is 7.86 kOhm giving an absolute
+ maximum current of 700mA. By setting this attribute in
+ the device tree, you can further restrict the maximum
+ current below the hardware limit. This requires the RFS
+ to be defined as it defines the maximum range.
+
+ led-max-microamp:
+ maximum: 700000
+ description: The maximum current for torch mode
+ is hardwired to the component using the RTS resistor to
+ ground. The maximum hardware current setting is calculated
+ according to the formula Imax = 5500 / RTS. The lowest
+ allowed resistance value is 7.86 kOhm giving an absolute
+ maximum current of 700mA. By setting this attribute in
+ the device tree, you can further restrict the maximum
+ current below the hardware limit. This requires the RTS
+ to be defined as it defines the maximum range.
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - ent-gpios
+ - enf-gpios
+ - led
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/leds/common.h>
+
+ led-controller {
+ compatible = "richtek,rt8515";
+ enf-gpios = <&gpio4 12 GPIO_ACTIVE_HIGH>;
+ ent-gpios = <&gpio4 13 GPIO_ACTIVE_HIGH>;
+ richtek,rfs-ohms = <16000>;
+ richtek,rts-ohms = <100000>;
+
+ led {
+ function = LED_FUNCTION_FLASH;
+ color = <LED_COLOR_ID_WHITE>;
+ flash-max-timeout-us = <250000>;
+ flash-max-microamp = <150000>;
+ led-max-microamp = <25000>;
+ };
+ };
+
+...