dt-bindings: leds-lp55xx: Add ti,charge-pump-mode

Add a binding to configure the internal charge pump for lp55xx.

Signed-off-by: Maarten Zanders <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/devicetree/bindings/leds/leds-lp55xx.yaml

···
   '#size-cells':
     const: 0
 
+  ti,charge-pump-mode:
+    description:
+      Set the operating mode of the internal charge pump as defined in
+      <dt-bindings/leds/leds-lp55xx.h>.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    default: 3 # auto
+    maximum: 3
+
 patternProperties:
   '^multi-led@[0-8]$':
     type: object
···
 examples:
   - |
     #include <dt-bindings/leds/common.h>
+    #include <dt-bindings/leds/leds-lp55xx.h>
 
     i2c {
         #address-cells = <1>;
···
             reg = <0x32>;
             clock-mode = /bits/ 8 <2>;
             pwr-sel = /bits/ 8 <3>;	/* D1~9 connected to VOUT */
+            ti,charge-pump-mode = <LP55XX_CP_BYPASS>;
 
             led@0 {
                 reg = <0>;

include/dt-bindings/leds/leds-lp55xx.h

···
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+#ifndef _DT_BINDINGS_LEDS_LP55XX_H
+#define _DT_BINDINGS_LEDS_LP55XX_H
+
+#define LP55XX_CP_OFF		0
+#define LP55XX_CP_BYPASS	1
+#define LP55XX_CP_BOOST		2
+#define LP55XX_CP_AUTO		3
+
+#endif /* _DT_BINDINGS_LEDS_LP55XX_H */