Re: [PATCH v2 1/6] dt-bindings: leds: Document TI LM3533 LED controller
From: Daniel Thompson <hidden>
Date: 2026-05-29 09:51:14
Also in:
dri-devel, linux-devicetree, linux-iio, linux-leds, lkml
On Thu, May 28, 2026 at 04:51:18PM +0300, Svyatoslav Ryhel wrote:
quoted hunk ↗ jump to hunk
Document 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 <redacted> --- .../leds/backlight/ti,lm3533-backlight.yaml | 68 +++++++ .../bindings/leds/ti,lm3533-leds.yaml | 66 +++++++ .../devicetree/bindings/leds/ti,lm3533.yaml | 170 ++++++++++++++++++ 3 files changed, 304 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/ti,lm3533-backlight.yaml create mode 100644 Documentation/devicetree/bindings/leds/ti,lm3533-leds.yaml create mode 100644 Documentation/devicetree/bindings/leds/ti,lm3533.yamldiff --git a/Documentation/devicetree/bindings/leds/backlight/ti,lm3533-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/ti,lm3533-backlight.yaml new file mode 100644 index 000000000000..866b0fb8ed04 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/ti,lm3533-backlight.yaml@@ -0,0 +1,68 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/backlight/ti,lm3533-backlight.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TI LM3533 high voltage series LED strings + +description: + This is part of the TI LM3533 MFD device. It represents two high voltage series + LED strings for display backlight controlled by the TI LM3533. + +maintainers: + - Svyatoslav Ryhel <clamor95@gmail.com> + +allOf: + - $ref: /schemas/leds/backlight/common.yaml# + +properties: + compatible: + const: ti,lm3533-backlight + + reg: + description: Control bank selection (0 = bank A, 1 = bank B). + maximum: 1 <snip> + ti,pwm-config-mask: + $ref: /schemas/types.yaml#/definitions/uint32 + description: | + Control Bank PWM Configuration Register mask that allows to configure + PWM input in Zones 0-4 + BIT(0) - PWM Input is enabled + BIT(1) - PWM Input is enabled in Zone 0 + BIT(2) - PWM Input is enabled in Zone 1 + BIT(3) - PWM Input is enabled in Zone 2 + BIT(4) - PWM Input is enabled in Zone 3 + BIT(5) - PWM Input is enabled in Zone 4
This is optional and the drive implements a default (zero) that is not documented here. Is zero a sane default from a DT binding point of view? Daniel.