From b334ba77c0269fd6e3395e25bf6c4d04317da399 Mon Sep 17 00:00:00 2001
From: Alex Fabre <alex.fabre@rtone.fr>
Date: Tue, 25 Jun 2024 11:34:13 +0200
Subject: [PATCH] boards: st: add `adc1` peripheral for `nucleo_h533re`

This nucleo board inherit from the root `h5` dts some special nodes:
- `vbat` on adc1 channel 2
- `vref` on adc1 channel 17
- `die_temp` on adc1 channel 16

The issue is discussed here:
https://github.com/zephyrproject-rtos/zephyr/issues/72914

(cherry picked from commit 648f6dcac41e009f376d7793014e4557c8404fe1)

Original-Signed-off-by: Alex Fabre <alex.fabre@rtone.fr>
GitOrigin-RevId: 648f6dcac41e009f376d7793014e4557c8404fe1
Change-Id: I73bbe54c7534709464e3d7eb23c6461b44c1932e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/5666209
Reviewed-by: Ting Shen <phoenixshen@chromium.org>
Tested-by: Ting Shen <phoenixshen@chromium.org>
Tested-by: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>
Commit-Queue: Ting Shen <phoenixshen@chromium.org>
---
 boards/st/nucleo_h533re/nucleo_h533re.dts     | 18 +++++++++++++
 .../adc/adc_api/boards/nucleo_h533re.overlay  | 25 +++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 tests/drivers/adc/adc_api/boards/nucleo_h533re.overlay

diff --git a/boards/st/nucleo_h533re/nucleo_h533re.dts b/boards/st/nucleo_h533re/nucleo_h533re.dts
index 7071a5e21a8..5dc9e15aa2b 100644
--- a/boards/st/nucleo_h533re/nucleo_h533re.dts
+++ b/boards/st/nucleo_h533re/nucleo_h533re.dts
@@ -53,7 +53,9 @@
 		pwm-led0 = &green_pwm_led;
 		sw0 = &user_button;
 		watchdog0 = &iwdg;
+		die-temp0 = &die_temp;
 		volt-sensor0 = &vref;
+		volt-sensor1 = &vbat;
 	};
 };
 
@@ -118,10 +120,26 @@
 	};
 };
 
+&adc1 {
+	pinctrl-0 = <&adc1_inp0_pa0>; /* Arduino A0 */
+	pinctrl-names = "default";
+	st,adc-clock-source = <ASYNC>;
+	st,adc-prescaler = <8>;
+	status = "okay";
+};
+
+&die_temp {
+	status = "okay";
+};
+
 &vref {
 	status = "okay";
 };
 
+&vbat {
+	status = "okay";
+};
+
 &rng {
 	status = "okay";
 };
diff --git a/tests/drivers/adc/adc_api/boards/nucleo_h533re.overlay b/tests/drivers/adc/adc_api/boards/nucleo_h533re.overlay
new file mode 100644
index 00000000000..9f34fcb72e8
--- /dev/null
+++ b/tests/drivers/adc/adc_api/boards/nucleo_h533re.overlay
@@ -0,0 +1,25 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) Alex Fabre <alex.fabre@rtone.fr>
+ */
+
+/ {
+	zephyr,user {
+		/* adjust channel number according to pinmux in board.dts */
+		io-channels = <&adc1 0>;
+	};
+};
+
+&adc1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	channel@0 {
+		reg = <0>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+};