From 7f6b48a66362967575504e66a9e33fc689d3cac8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Paulo=20Gon=C3=A7alves?=
 <joao.goncalves@toradex.com>
Date: Sun, 1 Sep 2024 17:57:13 +0200
Subject: [PATCH] arm64: dts: colibri-imx8x: Add analog inputs
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Add adc nodes for analog inputs support for all Colibri-iMX8X carrier
boards.

Signed-off-by: João Paulo Gonçalves <joao.goncalves@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---
 .../boot/dts/freescale/imx8x-colibri-aster.dtsi    |  5 +++++
 .../boot/dts/freescale/imx8x-colibri-eval-v3.dtsi  |  5 +++++
 .../boot/dts/freescale/imx8x-colibri-iris.dtsi     |  5 +++++
 arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi   | 14 +++++++++++++-
 4 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8x-colibri-aster.dtsi b/arch/arm64/boot/dts/freescale/imx8x-colibri-aster.dtsi
index c02dfdd75b600..503aa5a905033 100644
--- a/arch/arm64/boot/dts/freescale/imx8x-colibri-aster.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8x-colibri-aster.dtsi
@@ -3,6 +3,11 @@
  * Copyright 2018-2021 Toradex
  */
 
+/* Colibri Analogue Inputs */
+&adc0 {
+	status = "okay";
+};
+
 &colibri_gpio_keys {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/freescale/imx8x-colibri-eval-v3.dtsi b/arch/arm64/boot/dts/freescale/imx8x-colibri-eval-v3.dtsi
index 91de84772e1cb..a2b2a08656666 100644
--- a/arch/arm64/boot/dts/freescale/imx8x-colibri-eval-v3.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8x-colibri-eval-v3.dtsi
@@ -19,6 +19,11 @@
 	};
 };
 
+/* Colibri Analogue Inputs */
+&adc0 {
+	status = "okay";
+};
+
 &colibri_gpio_keys {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/freescale/imx8x-colibri-iris.dtsi b/arch/arm64/boot/dts/freescale/imx8x-colibri-iris.dtsi
index a6b013cc69296..6d9d54d4e5490 100644
--- a/arch/arm64/boot/dts/freescale/imx8x-colibri-iris.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8x-colibri-iris.dtsi
@@ -17,6 +17,11 @@
 	};
 };
 
+/* Colibri Analogue Inputs */
+&adc0 {
+	status = "okay";
+};
+
 &colibri_gpio_keys {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi b/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
index 56de45fb05e70..d88f2dd20afa5 100644
--- a/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
@@ -38,6 +38,13 @@
 		regulator-max-microvolt = <3300000>;
 	};
 
+	reg_module_vref_1v8: regulator-module-vref-1v8 {
+		compatible = "regulator-fixed";
+		regulator-max-microvolt = <1800000>;
+		regulator-min-microvolt = <1800000>;
+		regulator-name = "vref-1v8";
+	};
+
 	reg_usbh_vbus: regulator-usbh-vbus {
 		compatible = "regulator-fixed";
 		pinctrl-names = "default";
@@ -50,7 +57,12 @@
 	};
 };
 
-/* TODO Analogue Inputs */
+/* Colibri Analogue Inputs */
+&adc0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_adc0>;
+	vref-supply = <&reg_module_vref_1v8>;
+};
 
 /* TODO Cooling maps for DX */