drivers: pwm_led: esp32: Add inverted flag

Add inverted flag to bindings, as pwms field is supposed
to be used by application only.

Signed-off-by: Raffael Rostagno <raffael.rostagno@espressif.com>

drivers/pwm/pwm_led_esp32.c

@@ -400,7 +400,7 @@ PINCTRL_DT_INST_DEFINE(0);
 		.timer_num = DT_PROP(node_id, timer),                                              \
 		.speed_mode = DT_REG_ADDR(node_id) < SOC_LEDC_CHANNEL_NUM ? LEDC_LOW_SPEED_MODE    \
 									  : !LEDC_LOW_SPEED_MODE,  \
-		.inverted = DT_PWMS_FLAGS(node_id),                                                \
+		.inverted = DT_PROP(node_id, inverted),                                            \
 	},
 
 static struct pwm_ledc_esp32_channel_config channel_config[] = {

dts/bindings/pwm/espressif,esp32-ledc.yaml

@@ -1,4 +1,4 @@
-# Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd.
+# Copyright (c) 2025 Espressif Systems (Shanghai) Co., Ltd.
 # SPDX-License-Identifier: Apache-2.0
 
 description: |
@@ -64,6 +64,7 @@ description: |
       channel9@9 {
         reg = <0x9>;
         timer = <0>;
+        inverted;
       };
       channel10@a {
         reg = <0xa>;
@@ -71,6 +72,9 @@ description: |
       };
     };
 
+    For the channel to be initially inverted after the driver's init, the flag 'inverted' can
+    be declared, as shown above for channel 9.
+
     Note: The channel's 'reg' property defines the ID of the channel. It must match the channel used
       in the 'pinmux'.
 
@@ -130,6 +134,14 @@ child-binding:
         For maximum flexibility, the high-speed as well as the low-speed channels can be driven from
         one of four high-speed/low-speed timers.
 
+    inverted:
+      type: boolean
+      description: |
+        Initial channel output level.
+        This flag defines if the channel will remain initially inverted after driver init,
+        as any pwm_set() operation will re-evaluate if the output is inverted or not
+        according to the flag passed as parameter.
+
 pwm-cells:
 - channel
 - period