The AXP813 PMIC can control one LED. Add binding to represent the LED.

Signed-off-by: Ondrej Jirman <redacted>
---
  .../devicetree/bindings/leds/leds-axp20x.yaml | 24 +++++++++++++++++++
  1 file changed, 24 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/leds/leds-axp20x.yaml

diff --git a/Documentation/devicetree/bindings/leds/leds-axp20x.yaml b/Documentation/devicetree/bindings/leds/leds-axp20x.yaml
new file mode 100644
index 0000000000000..79282d55764bf
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-axp20x.yaml

@@ -0,0 +1,24 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/leds-axp20x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LED driver for AXP813 PMIC from X-Powers.
+
+maintainers:
+  - Ondrej Jirman <megous@megous.com>
+
+description: |
+  This module is part of the AXP20x MFD device. For more details
+  see Documentation/devicetree/bindings/mfd/axp20x.txt.
+
+  The LED controller is represented as a sub-node of the PMIC node on
+  the device tree.
+
+properties:
+  compatible:
+    const: x-powers,axp813-charger-led
+
+required:
+  - compatible