From 9a4091b02a3ade2bc5e9f3a7f3738dcc291e3978 Mon Sep 17 00:00:00 2001
From: Richard Wheatley <richard.wheatley@ambiq.com>
Date: Thu, 22 Aug 2024 12:44:57 -0500
Subject: [PATCH] boards: ambiq: add adc to apollo4p boards

Add adc to apollo4 plus boards

Signed-off-by: Richard Wheatley <richard.wheatley@ambiq.com>
---
 boards/ambiq/apollo4p_evb/apollo4p_evb-pinctrl.dtsi | 7 ++++++-
 boards/ambiq/apollo4p_evb/apollo4p_evb.dts          | 7 +++++++
 boards/ambiq/apollo4p_evb/apollo4p_evb.yaml         | 1 +
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/boards/ambiq/apollo4p_evb/apollo4p_evb-pinctrl.dtsi b/boards/ambiq/apollo4p_evb/apollo4p_evb-pinctrl.dtsi
index 98636cf262a..125e1a7d238 100644
--- a/boards/ambiq/apollo4p_evb/apollo4p_evb-pinctrl.dtsi
+++ b/boards/ambiq/apollo4p_evb/apollo4p_evb-pinctrl.dtsi
@@ -17,6 +17,12 @@
 			input-enable;
 		};
 	};
+	adc0_default: adc0_default{
+		group1 {
+			pinmux = <ADCSE4_P15>, <ADCSE7_P12>;
+			drive-strength = "0.1";
+		};
+	};
 	i2c0_default: i2c0_default {
 		group1 {
 			pinmux = <M0SCL_P5>, <M0SDAWIR3_P6>;
@@ -81,7 +87,6 @@
 			bias-pull-up;
 		};
 	};
-
 	spi0_default: spi0_default {
 		group1 {
 			pinmux = <M0SCK_P5>, <M0MISO_P7>, <M0MOSI_P6>;
diff --git a/boards/ambiq/apollo4p_evb/apollo4p_evb.dts b/boards/ambiq/apollo4p_evb/apollo4p_evb.dts
index 5a9d5d49368..c678604f358 100644
--- a/boards/ambiq/apollo4p_evb/apollo4p_evb.dts
+++ b/boards/ambiq/apollo4p_evb/apollo4p_evb.dts
@@ -63,6 +63,13 @@
 	status = "okay";
 };
 
+&adc0 {
+compatible = "ambiq,adc";
+	pinctrl-0 = <&adc0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &counter0 {
 	status = "okay";
 };
diff --git a/boards/ambiq/apollo4p_evb/apollo4p_evb.yaml b/boards/ambiq/apollo4p_evb/apollo4p_evb.yaml
index 09ca43fb8b3..1b7b54a71e6 100644
--- a/boards/ambiq/apollo4p_evb/apollo4p_evb.yaml
+++ b/boards/ambiq/apollo4p_evb/apollo4p_evb.yaml
@@ -15,6 +15,7 @@ supported:
   - spi
   - i2c
   - rtc
+  - adc
   - hwinfo
 testing:
   ignore_tags: