From d91ef40a7e39a24468a515455287f5a2b25b0cf7 Mon Sep 17 00:00:00 2001
From: Aaron Ye <aye@ambiq.com>
Date: Mon, 25 Sep 2023 12:12:36 +0800
Subject: [PATCH] boards: arm: apollo4p_blue_kxr_evb: Enable SPI.

This commit enables SPI instance for apollo4p_blue_kxr_evb board.
Also adds pin configuration for each instance.

Signed-off-by: Aaron Ye <aye@ambiq.com>
---
 .../apollo4p_blue_kxr_evb-pinctrl.dtsi        | 81 +++++++++++++++++++
 .../apollo4p_blue_kxr_evb.dts                 |  8 ++
 2 files changed, 89 insertions(+)

diff --git a/boards/arm/apollo4p_blue_kxr_evb/apollo4p_blue_kxr_evb-pinctrl.dtsi b/boards/arm/apollo4p_blue_kxr_evb/apollo4p_blue_kxr_evb-pinctrl.dtsi
index b171a065bca..35965f21a32 100644
--- a/boards/arm/apollo4p_blue_kxr_evb/apollo4p_blue_kxr_evb-pinctrl.dtsi
+++ b/boards/arm/apollo4p_blue_kxr_evb/apollo4p_blue_kxr_evb-pinctrl.dtsi
@@ -72,4 +72,85 @@
 			bias-pull-up;
 		};
 	};
+
+	spi0_default: spi0_default {
+		group1 {
+			pinmux = <M0SCK_P5>, <M0MISO_P7>, <M0MOSI_P6>;
+		};
+		group2 {
+			pinmux = <NCE72_P72>;
+			drive-push-pull;
+			ambiq,iom-nce-module = <0>;
+		};
+	};
+	spi1_default: spi1_default {
+		group1 {
+			pinmux = <M1SCK_P8>, <M1MISO_P10>, <M1MOSI_P9>;
+		};
+		group2 {
+			pinmux = <NCE11_P11>;
+			drive-push-pull;
+			ambiq,iom-nce-module = <4>;
+		};
+	};
+	spi2_default: spi2_default {
+		group1 {
+			pinmux = <M2SCK_P25>, <M2MISO_P27>, <M2MOSI_P26>;
+		};
+		group2 {
+			pinmux = <NCE37_P37>;
+			drive-push-pull;
+			ambiq,iom-nce-module = <8>;
+		};
+	};
+	spi3_default: spi3_default {
+		group1 {
+			pinmux = <M3SCK_P31>, <M3MISO_P33>, <M3MOSI_P32>;
+		};
+		group2 {
+			pinmux = <NCE85_P85>;
+			drive-push-pull;
+			ambiq,iom-nce-module = <12>;
+		};
+	};
+	spi4_default: spi4_default {
+		group1 {
+			pinmux = <M4SCK_P34>, <M4MISO_P36>, <M4MOSI_P35>;
+		};
+		group2 {
+			pinmux = <NCE54_P54>;
+			drive-push-pull;
+			ambiq,iom-nce-module = <16>;
+		};
+	};
+	spi5_default: spi5_default {
+		group1 {
+			pinmux = <M5SCK_P47>, <M5MISO_P49>, <M5MOSI_P48>;
+		};
+		group2 {
+			pinmux = <NCE60_P60>;
+			drive-push-pull;
+			ambiq,iom-nce-module = <20>;
+		};
+	};
+	spi6_default: spi6_default {
+		group1 {
+			pinmux = <M6SCK_P61>, <M6MISO_P63>, <M6MOSI_P62>;
+		};
+		group2 {
+			pinmux = <NCE30_P30>;
+			drive-push-pull;
+			ambiq,iom-nce-module = <24>;
+		};
+	};
+	spi7_default: spi7_default {
+		group1 {
+			pinmux = <M7SCK_P22>, <M7MISO_P24>, <M7MOSI_P23>;
+		};
+		group2 {
+			pinmux = <NCE88_P88>;
+			drive-push-pull;
+			ambiq,iom-nce-module = <28>;
+		};
+	};
 };
diff --git a/boards/arm/apollo4p_blue_kxr_evb/apollo4p_blue_kxr_evb.dts b/boards/arm/apollo4p_blue_kxr_evb/apollo4p_blue_kxr_evb.dts
index 3f73bd219bc..b09ba535109 100644
--- a/boards/arm/apollo4p_blue_kxr_evb/apollo4p_blue_kxr_evb.dts
+++ b/boards/arm/apollo4p_blue_kxr_evb/apollo4p_blue_kxr_evb.dts
@@ -42,3 +42,11 @@
 	clock-frequency = <I2C_BITRATE_STANDARD>;
 	status = "okay";
 };
+
+&iom1 {
+	compatible = "ambiq,spi";
+	pinctrl-0 = <&spi1_default>;
+	pinctrl-names = "default";
+	clock-frequency = <1000000>;
+	status = "okay";
+};