[RFC PATCH 1/2] dt-bindings: leds: Document TI LM3643 dual LED flash driver

Document Texas Instruments LM3643 dual LED flash driver devicetree
bindings.

Signed-off-by: Rillian Grant <[email protected]>
---
 .../devicetree/bindings/leds/ti,lm3643.yaml   | 126 ++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/ti,lm3643.yaml

diff --git a/Documentation/devicetree/bindings/leds/ti,lm3643.yaml b/Documentation/devicetree/bindings/leds/ti,lm3643.yaml
new file mode 100644
index 000000000000..18b08a79512f
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@@ -0,0 +1,126 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/ti,lm3643.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments LM3643 1500mA dual LED Flash Driver
+
+maintainers:
+  - Rillian Grant <[email protected]>
+
+description: |
+  The LM3643 is a dual LED flash driver utilizing a synchronous boost converter
+  to provide power to two current sources.
+
+  The dual high-side current sources can be tied together to provide flash
+  currents up to 1.5A through a single LED.
+
+  Datasheet: https://www.ti.com/lit/ds/symlink/lm3643.pdf
+
+properties:
+  compatible:
+    enum:
+      - ti,lm3643
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^led@[0-1]$":
+    type: object
+    $ref: common.yaml#
+    unevaluatedProperties: false
+
+    properties:
+      reg:
+        description: Index of the LED.
+        minimum: 0
+        maximum: 1
+
+      led-sources:
+        minItems: 1
+        maxItems: 2
+        items:
+          minimum: 0
+          maximum: 1
+
+      flash-max-microamp:
+        description: |
+          Maximum flash current through this LED. Each high-side current source
+          can provide up to 1.5A. The maximum current the boost can deliver is
+          1.5A across both sources.
+
+          Valid values for an LED connected to one source:
+            10900 - 1500000, step by 11725 (rounded down)
+          Valid values for an LED connected to both sources:
+            21800 - 1500000, step by 23450 (rounded down)
+
+        minimum: 10900
+        maximum: 1500000
+
+      led-max-microamp:
+        description: |
+          Maximum torch current through this LED. In torch mode each high-side
+          current source can provide up to 179mA.
+
+          Valid values for an LED connected to one source:
+            977 - 179000, step by 1400 (rounded down)
+          Valid values for an LED connected to both sources:
+            1954 - 358000, step by 2800 (rounded down)
+
+        minimum: 977
+        maximum: 358000
+
+      flash-max-timeout-us:
+        description: |
+          The chip supports timeouts from 10ms to 100ms in increments of 10ms
+          and from 100ms to 400ms in increments of 50ms. The provided value
+          will be rounded down to a supported value.
+
+        minimum: 10000
+        maximum: 400000
+
+    required:
+      - reg
+      - led-sources
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/leds/common.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        flash-led-controller@63 {
+            compatible = "ti,lm3643";
+            reg = <0x63>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            led@0 {
+                reg = <0>;
+                led-sources = <0>, <1>;
+                function = LED_FUNCTION_FLASH;
+                color = <LED_COLOR_ID_IR>;
+                flash-max-microamp = <750000>;
+                led-max-microamp = <180000>;
+                flash-max-timeout-us = <150000>;
+            };
+        };
+    };
-- 
2.55.0