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Subject[PATCH 2/3] dt-bindings: leds: Add binding for sgm3140
Date
Add YAML devicetree binding for SGMICRO SGM3140 charge pump used for
camera flash LEDs.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
---
Changes since RFC:
- new patch

I'm not sure about the completeness of this binding as it doesn't
mention the led subnode at all.
The only existing led yaml binding is leds/leds-max77650.yaml which
mentions the subnode but duplicates properties from documented in
leds/common.txt.

.../bindings/leds/leds-sgm3140.yaml | 53 +++++++++++++++++++
1 file changed, 53 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/leds-sgm3140.yaml

diff --git a/Documentation/devicetree/bindings/leds/leds-sgm3140.yaml b/Documentation/devicetree/bindings/leds/leds-sgm3140.yaml
new file mode 100644
index 000000000000..be9384573d02
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-sgm3140.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/leds-sgm3140.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SGMICRO SGM3140 500mA Buck/Boost Charge Pump LED Driver
+
+maintainers:
+ - Luca Weiss <luca@z3ntu.xyz>
+
+description: |
+ The SGM3140 is a current-regulated charge pump which can regulate two current
+ levels for Flash and Torch modes.
+
+ It is controlled with two GPIO pins.
+
+ The data sheet can be found at:
+ http://www.sg-micro.com/uploads/soft/20190626/1561535688.pdf
+
+properties:
+ compatible:
+ const: sgmicro,sgm3140
+
+ enable-gpios:
+ maxItems: 1
+ description: A connection to the 'EN' pin.
+
+ flash-gpios:
+ maxItems: 1
+ description: A connection to the 'FLASH' pin.
+
+required:
+ - compatible
+ - flash-gpios
+ - enable-gpios
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/leds/common.h>
+
+ sgm3140 {
+ compatible = "sgmicro,sgm3140";
+ flash-gpios = <&pio 3 24 GPIO_ACTIVE_HIGH>; /* PD24 */
+ enable-gpios = <&pio 2 3 GPIO_ACTIVE_HIGH>; /* PC3 */
+
+ sgm3140_flash: led {
+ function = LED_FUNCTION_FLASH;
+ color = <LED_COLOR_ID_WHITE>;
+ flash-max-timeout-us = <250000>;
+ };
+ };
--
2.25.1
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