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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/leds-tlc5928.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LED driver for TLC5928 from Texas Instruments.
+
+maintainers:
+ - Corentin Guillevic <corentin.guillevic@smile.fr>
+
+description: |
+ The TLC5928 is a LED controller handling up to 16 LEDs. It can
+ control LED on/off using a SPI-compatible interface, and has an
+ on/off control data shift register (blank) and data latch.
+
+ This driver also supports the daisy-chaining of several TLC5928
+ chips, as illustrated by the diagram below (with two controllers):
+
+ +--------------+ +--------------+
+ | SCLK|-----+---->|SCLK BLANK|--
+ | | | | |
+ | SPI MOSI|-----|---->|MOSI TLC5928 |
+ | Master | | | (1) |
+ | MISO|<--+ | +--|MISO |
+ | | | | | | |
+ | CS/LATCH|-+-|-|--|->|LATCH |
+ +--------------+ | | | | +--------------+
+ | | | | +--------------+
+ | | +--|->|SCLK BLANK|--
+ | | | | |
+ | | +->|MOSI TLC5928 |
+ | | | (2) |
+ | +-------|MISO |
+ | | |
+ +-------->|LATCH |
+ +--------------+
+
+ For more product information please see the link below:
+ https://www.ti.com/product/TLC5928/part-details/TLC5928PWPR
+
+properties:
+ compatible:
+ const: ti,tlc5928
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+ reg:
+ maxItems: 1
+ description:
+ SPI slave address
+
+ enable-gpios:
+ description: |
+ Array of GPIO specifiers, referring to the GPIO pins to enable/disable
+ each device (active high to disable). In the daisy chain case, each
+ GPIO has to be in the same sequence than the devices.
+
+ latch-gpio:
+ maxItems: 1
+ description: Latch GPIO (SPI chip select)
+
+patternProperties:
+ "^spi-chip@[0-9]$":
+ type: object
+ unevaluatedProperties: false
+ description: Properties for a TLC5928 controller.
+
+ properties:
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ patternProperties:
+
+ "^led@[0-9a-f]+$":
+ type: object
+ $ref: common.yaml#
+ unevaluatedProperties: false
+ description:
+ Properties for a single LED.
+
+ properties:
+ reg:
+ description: Index of the LED.
+ minimum: 0
+ maximum: 15
+
+ required:
+ - reg
+
+ required:
+ - "#address-cells"
+ - "#size-cells"
+
+required:
+ - compatible
+ - reg
+ - latch-gpio
+
+unevaluatedProperties: false
+
+examples:
+ # Single controller
+ - |
+ #include <dt-bindings/leds/common.h>
+
+ tlc5928@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "ti,tlc5928";
+ reg = <0x0>;
+
+ enable-gpios = <&gpiof 10 GPIO_ACTIVE_HIGH>;
+ latch-gpio = <&gpiof 3 GPIO_ACTIVE_HIGH>;
+
+ spi-chip@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ led@0 {
+ label = "tlc5928:led0";
+ led = <LED_COLOR_ID_WHITE>;
+ reg = <0x0>;
+ };
+
+ led@1 {
+ label = "tlc5928:led1";
+ led = <LED_COLOR_ID_RED>;
+ reg = <0x1>;
+ };
+
+ led@f {
+ label = "tlc5928:led15";
+ led = <LED_COLOR_ID_GREEN>;
+ reg = <0xf>;
+ };
+ };
+ };
+
+ # Two controllers, in daisy chain
+ - |
+ #include <dt-bindings/leds/common.h>
+
+ tlc5928@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "ti,tlc5928";
+ reg = <0x0>;
+
+ enable-gpios = <&gpiof 10 GPIO_ACTIVE_HIGH>, /* OUT_EN_1 */
+ <&gpiof 9 GPIO_ACTIVE_HIGH>; /* OUT_EN_2 */
+ latch-gpio = <&gpiof 3 GPIO_ACTIVE_HIGH>;
+
+ spi-chip@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ led@0 {
+ label = "tlc5928:0:led0";
+ led = <LED_COLOR_ID_WHITE>;
+ reg = <0x0>;
+ };
+
+ led@1 {
+ label = "tlc5928:0:led1";
+ led = <LED_COLOR_ID_RED>;
+ reg = <0x1>;
+ };
+
+ led@f {
+ label = "tlc5928:0:led15";
+ led = <LED_COLOR_ID_GREEN>;
+ reg = <0xf>;
+ };
+ };
+
+ spi-chip@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ led@0 {
+ label = "tlc5928:1:led0";
+ led = <LED_COLOR_ID_BLUE>;
+ reg = <0x0>;
+ };
+
+ led@1 {
+ label = "tlc5928:1:led1";
+ led = <LED_COLOR_ID_AMBER>;
+ reg = <0x1>;
+ };
+
+ led@2 {
+ label = "tlc5928:1:led2";
+ led = <LED_COLOR_ID_VIOLET>;
+ reg = <0x2>;
+ };
+
+ led@f {
+ label = "tlc5928:1:led15";
+ led = <LED_COLOR_ID_YELLOW>;
+ reg = <0xf>;
+ };
+ };
+ };
Document Texas Instruments TLC5928 LED driver devicetree bindings. Signed-off-by: Corentin Guillevic <corentin.guillevic@smile.fr> --- .../bindings/leds/leds-tlc5928.yaml | 212 ++++++++++++++++++ 1 file changed, 212 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-tlc5928.yaml