ARM: dts: microchip: add support for sama7d65_curiosity board

Add device tree support for the SAMA7D65 Curiosity board.
Update the Makefile to include the new device tree file.

uart6 is related to flexcom6, hence not sorted in alphabetical order.

Signed-off-by: Romain Sioen <[email protected]>
Signed-off-by: Varshini Rajendran <[email protected]>
Signed-off-by: Ryan Wanner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[claudiu.beznea: moved chosen node after alias for aphanumerically
 sortage, added a space in front of <PIN_PD19__FLEXCOM6_IO1> for
 alignment]
Signed-off-by: Claudiu Beznea <[email protected]>

Author: Romain Sioen

arch/arm/boot/dts/microchip/Makefile

@@ -12,6 +12,7 @@ DTC_FLAGS_at91-sama5d2_xplained := -@
 DTC_FLAGS_at91-sama5d3_eds := -@
 DTC_FLAGS_at91-sama5d3_xplained := -@
 DTC_FLAGS_at91-sama5d4_xplained := -@
+DTC_FLAGS_at91-sama7d65_curiosity := -@
 DTC_FLAGS_at91-sama7g54_curiosity := -@
 DTC_FLAGS_at91-sama7g5ek := -@
 dtb-$(CONFIG_SOC_AT91RM9200) += \
@@ -90,6 +91,8 @@ dtb-$(CONFIG_SOC_SAM_V7) += \
 	at91-sama5d4_xplained.dtb \
 	at91-sama5d4ek.dtb \
 	at91-vinco.dtb
+dtb-$(CONFIG_SOC_SAMA7D65) += \
+	at91-sama7d65_curiosity.dtb
 dtb-$(CONFIG_SOC_SAMA7G5) += \
 	at91-sama7g54_curiosity.dtb \
 	at91-sama7g5ek.dtb

arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts

@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ *  at91-sama7d65_curiosity.dts - Device Tree file for SAMA7D65 Curiosity board
+ *
+ *  Copyright (c) 2024 Microchip Technology Inc. and its subsidiaries
+ *
+ *  Author: Romain Sioen <[email protected]>
+ *
+ */
+/dts-v1/;
+#include "sama7d65-pinfunc.h"
+#include "sama7d65.dtsi"
+#include <dt-bindings/mfd/atmel-flexcom.h>
+#include <dt-bindings/pinctrl/at91.h>
+
+/ {
+	model = "Microchip SAMA7D65 Curiosity";
+	compatible = "microchip,sama7d65-curiosity", "microchip,sama7d65",
+		     "microchip,sama7d6", "microchip,sama7";
+
+	aliases {
+		serial0 = &uart6;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@60000000 {
+		device_type = "memory";
+		reg = <0x60000000 0x40000000>;
+	};
+};
+
+&flx6 {
+	atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_USART>;
+	status = "okay";
+};
+
+&uart6 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart6_default>;
+	status = "okay";
+};
+
+&main_xtal {
+	clock-frequency = <24000000>;
+};
+
+&pioa {
+	pinctrl_sdmmc1_default: sdmmc1-default {
+		cmd-data {
+			pinmux = <PIN_PB22__SDMMC1_CMD>,
+				 <PIN_PB24__SDMMC1_DAT0>,
+				 <PIN_PB25__SDMMC1_DAT1>,
+				 <PIN_PB26__SDMMC1_DAT2>,
+				 <PIN_PB27__SDMMC1_DAT3>;
+			slew-rate = <0>;
+			bias-disable;
+		};
+
+		ck-cd-rstn-vddsel {
+			pinmux = <PIN_PB23__SDMMC1_CK>,
+				 <PIN_PB21__SDMMC1_RSTN>,
+				 <PIN_PB30__SDMMC1_1V8SEL>,
+				 <PIN_PB29__SDMMC1_CD>,
+				 <PIN_PB28__SDMMC1_WP>;
+			slew-rate = <0>;
+			bias-disable;
+		};
+	};
+
+	pinctrl_uart6_default: uart6-default {
+		pinmux = <PIN_PD18__FLEXCOM6_IO0>,
+			 <PIN_PD19__FLEXCOM6_IO1>;
+		bias-disable;
+	};
+};
+
+&sdmmc1 {
+	bus-width = <4>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sdmmc1_default>;
+	status = "okay";
+};
+
+&slow_xtal {
+	clock-frequency = <32768>;
+};