[nrf fromlist] dts: bindings: comparator: nordic: Change inputs type to int

Unify external analog inputs type to be consistent
in COMP, LPCOMP and SAADC nordic drivers.

Upstream PR #: 95106

Signed-off-by: Jakub Zymelka <[email protected]>

Author: jaz1-nordic

dts/bindings/comparator/nordic,nrf-comp.yaml

@@ -25,7 +25,7 @@ description: |
     &comp {
             status = "okay";
             main-mode = "SE";
-            psel = "AIN0";
+            psel = <NRF_COMP_AIN0>;
             refsel = "INT_1V2";
             sp-mode = "NORMAL";
             th-up = <36>;
@@ -39,7 +39,7 @@ description: |
     &comp {
             ...
             refsel = "AREF";
-            extrefsel = "AIN1";
+            extrefsel = <NRF_COMP_AIN1>;
             ...
     };
 
@@ -49,8 +49,8 @@ description: |
     &comp {
             status = "okay";
             main-mode = "DIFF";
-            psel = "AIN0";
-            extrefsel = "AIN1";
+            psel = <NRF_COMP_AIN0>;
+            extrefsel = <NRF_COMP_AIN1>;
             sp-mode = "NORMAL";
             enable-hyst;
             isource = "DISABLED";
@@ -68,30 +68,10 @@ properties:
       - "DIFF"
 
   psel:
-    type: string
-    enum:
-      - "AIN0"
-      - "AIN1"
-      - "AIN2"
-      - "AIN3"
-      - "AIN4"
-      - "AIN5"
-      - "AIN6"
-      - "AIN7"
-      - "VDD_DIV2"
-      - "VDDH_DIV5"
+    type: int
 
   extrefsel:
-    type: string
-    enum:
-      - "AIN0"
-      - "AIN1"
-      - "AIN2"
-      - "AIN3"
-      - "AIN4"
-      - "AIN5"
-      - "AIN6"
-      - "AIN7"
+    type: int
 
   refsel:
     type: string

dts/bindings/comparator/nordic,nrf-lpcomp.yaml

@@ -21,7 +21,7 @@ description: |
 
     &comp {
             status = "okay";
-            psel = "AIN0";
+            psel = <NRF_COMP_AIN0>;
             refsel = "VDD_4_8";
             enable-hyst;
     };
@@ -32,7 +32,7 @@ description: |
     &comp {
             ...
             refsel = "AREF";
-            extrefsel = "AIN1";
+            extrefsel = <NRF_COMP_AIN1>;
             ...
     };
 
@@ -42,22 +42,10 @@ include: base.yaml
 
 properties:
   psel:
-    type: string
-    enum:
-      - "AIN0"
-      - "AIN1"
-      - "AIN2"
-      - "AIN3"
-      - "AIN4"
-      - "AIN5"
-      - "AIN6"
-      - "AIN7"
+    type: int
 
   extrefsel:
-    type: string
-    enum:
-      - "AIN0"
-      - "AIN1"
+    type: int
 
   refsel:
     type: string

include/zephyr/dt-bindings/comparator/nrf-comp.h

@@ -0,0 +1,21 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ */
+
+#ifndef ZEPHYR_INCLUDE_DT_BINDINGS_ADC_NRF_COMP_H_
+#define ZEPHYR_INCLUDE_DT_BINDINGS_ADC_NRF_COMP_H_
+
+#define NRF_COMP_AIN0 0 /** AIN0 external input */
+#define NRF_COMP_AIN1 1 /** AIN1 external input */
+#define NRF_COMP_AIN2 2 /** AIN2 external input */
+#define NRF_COMP_AIN3 3 /** AIN3 external input */
+#define NRF_COMP_AIN4 4 /** AIN4 external input */
+#define NRF_COMP_AIN5 5 /** AIN5 external input */
+#define NRF_COMP_AIN6 6 /** AIN6 external input */
+#define NRF_COMP_AIN7 7 /** AIN7 external input */
+#define NRF_COMP_AIN_VDD_DIV2 8 /** VDD / 2 */
+#define NRF_COMP_AIN_VDDH_DIV5 9 /** VDDH / 5 */
+
+#endif /* ZEPHYR_INCLUDE_DT_BINDINGS_ADC_NRF_COMP_H_ */