[PATCH v8 1/2] dt-bindings: leds-lp55xx: add ti,charge-pump-mode

[Maarten Zanders <maarten.zanders@mind.be>]

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

Signed-off-by: Maarten Zanders <maarten.zanders@mind.be>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
Notes:
    v1: implement as bool to disable charge pump
    v2: rewrite to use string configuration, supporting all modes
    v3: simplification by replacing string option by u8 constant,
        removing previous Reviewed-by tags as it's a complete
        rewrite of the patch.
    v4: added notes
    v5: dual license, change property type to u32
    v6: change license type for leds-lp-55xx.h to preferred tag
    v8: documentation: add default & maximum constraints

 .../devicetree/bindings/leds/leds-lp55xx.yaml          | 10 ++++++++++
 include/dt-bindings/leds/leds-lp55xx.h                 | 10 ++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 include/dt-bindings/leds/leds-lp55xx.h

diff --git a/Documentation/devicetree/bindings/leds/leds-lp55xx.yaml b/Documentation/devicetree/bindings/leds/leds-lp55xx.yaml
index ae607911f1db..058be1fedbc8 100644
--- a/Documentation/devicetree/bindings/leds/leds-lp55xx.yaml
+++ b/Documentation/devicetree/bindings/leds/leds-lp55xx.yaml
@@ -66,6 +66,14 @@ properties:
   '#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
@@ -152,6 +160,7 @@ additionalProperties: false
 examples:
   - |
     #include <dt-bindings/leds/common.h>
+    #include <dt-bindings/leds/leds-lp55xx.h>
 
     i2c {
         #address-cells = <1>;
@@ -164,6 +173,7 @@ examples:
             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>;
diff --git a/include/dt-bindings/leds/leds-lp55xx.h b/include/dt-bindings/leds/leds-lp55xx.h
new file mode 100644
index 000000000000..a4fb4567715d
--- /dev/null
+++ b/include/dt-bindings/leds/leds-lp55xx.h
@@ -0,0 +1,10 @@
+/* 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 */
-- 
2.37.3