--- /dev/null
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * at91-sama7g54_curiosity.dts - Device Tree file for SAMA7G54 Curiosity Board
+ *
+ * Copyright (C) 2024 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Mihai Sain <mihai.sain@microchip.com>
+ *
+ */
+/dts-v1/;
+#include "sama7g5-pinfunc.h"
+#include "sama7g5.dtsi"
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/mfd/atmel-flexcom.h>
+#include <dt-bindings/pinctrl/at91.h>
+
+/ {
+ model = "Microchip SAMA7G54 Curiosity";
+ compatible = "microchip,sama7g54-curiosity", "microchip,sama7g5", "microchip,sama7";
+
+ aliases {
+ serial0 = &uart3;
+ i2c0 = &i2c10;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_key_gpio_default>;
+
+ button-user {
+ label = "user-button";
+ gpios = <&pioA PIN_PD19 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_PROG1>;
+ wakeup-source;
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_led_gpio_default>;
+
+ led-red {
+ color = <LED_COLOR_ID_RED>;
+ function = LED_FUNCTION_POWER;
+ gpios = <&pioA PIN_PD13 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+
+ led-green {
+ color = <LED_COLOR_ID_GREEN>;
+ function = LED_FUNCTION_BOOT;
+ gpios = <&pioA PIN_PD14 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+
+ led-blue {
+ color = <LED_COLOR_ID_BLUE>;
+ function = LED_FUNCTION_CPU;
+ gpios = <&pioA PIN_PB15 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "heartbeat";
+ };
+ };
+
+ memory@60000000 {
+ device_type = "memory";
+ reg = <0x60000000 0x10000000>; /* 256 MiB DDR3L-1066 16-bit */
+ };
+};
+
+&adc {
+ vddana-supply = <&vddout25>;
+ vref-supply = <&vddout25>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_mikrobus1_an_default &pinctrl_mikrobus2_an_default>;
+ status = "okay";
+};
+
+&cpu0 {
+ cpu-supply = <&vddcpu>;
+};
+
+&dma0 {
+ status = "okay";
+};
+
+&dma1 {
+ status = "okay";
+};
+
+&dma2 {
+ status = "okay";
+};
+
+&ebi {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_nand_default>;
+ status = "okay";
+
+ nand_controller: nand-controller {
+ status = "okay";
+
+ nand@3 {
+ reg = <0x3 0x0 0x800000>;
+ atmel,rb = <0>;
+ nand-bus-width = <8>;
+ nand-ecc-mode = "hw";
+ nand-ecc-strength = <8>;
+ nand-ecc-step-size = <512>;
+ nand-on-flash-bbt;
+ label = "nand";
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ at91bootstrap@0 {
+ label = "nand: at91bootstrap";
+ reg = <0x0 0x40000>;
+ };
+
+ bootloader@40000 {
+ label = "nand: u-boot";
+ reg = <0x40000 0x100000>;
+ };
+
+ bootloaderenv@140000 {
+ label = "nand: u-boot env";
+ reg = <0x140000 0x40000>;
+ };
+
+ dtb@180000 {
+ label = "nand: device tree";
+ reg = <0x180000 0x80000>;
+ };
+
+ kernel@200000 {
+ label = "nand: kernel";
+ reg = <0x200000 0x600000>;
+ };
+
+ rootfs@800000 {
+ label = "nand: rootfs";
+ reg = <0x800000 0x1f800000>;
+ };
+ };
+ };
+ };
+};
+
+&flx3 {
+ atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_USART>;
+ status = "okay";
+
+ uart3: serial@200 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_flx3_default>;
+ status = "okay";
+ };
+};
+
+&flx10 {
+ atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_TWI>;
+ status = "okay";
+
+ i2c10: i2c@600 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_flx10_default>;
+ i2c-analog-filter;
+ i2c-digital-filter;
+ i2c-digital-filter-width-ns = <35>;
+ status = "okay";
+
+ eeprom@51 {
+ compatible = "atmel,24c02";
+ reg = <0x51>;
+ pagesize = <16>;
+ size = <256>;
+ vcc-supply = <&vdd_3v3>;
+ };
+
+ pmic@5b {
+ compatible = "microchip,mcp16502";
+ reg = <0x5b>;
+
+ regulators {
+ vdd_3v3: VDD_IO {
+ regulator-name = "VDD_IO";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-initial-mode = <2>;
+ regulator-allowed-modes = <2>, <4>;
+ regulator-always-on;
+
+ regulator-state-standby {
+ regulator-on-in-suspend;
+ regulator-suspend-microvolt = <3300000>;
+ regulator-mode = <4>;
+ };
+
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ regulator-mode = <4>;
+ };
+ };
+
+ vddioddr: VDD_DDR {
+ regulator-name = "VDD_DDR";
+ regulator-min-microvolt = <1350000>;
+ regulator-max-microvolt = <1350000>;
+ regulator-initial-mode = <2>;
+ regulator-allowed-modes = <2>, <4>;
+ regulator-always-on;
+
+ regulator-state-standby {
+ regulator-on-in-suspend;
+ regulator-suspend-microvolt = <1350000>;
+ regulator-mode = <4>;
+ };
+
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-suspend-microvolt = <1350000>;
+ regulator-mode = <4>;
+ };
+ };
+
+ vddcore: VDD_CORE {
+ regulator-name = "VDD_CORE";
+ regulator-min-microvolt = <1150000>;
+ regulator-max-microvolt = <1150000>;
+ regulator-initial-mode = <2>;
+ regulator-allowed-modes = <2>, <4>;
+ regulator-always-on;
+
+ regulator-state-standby {
+ regulator-on-in-suspend;
+ regulator-suspend-voltage = <1150000>;
+ regulator-mode = <4>;
+ };
+
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ regulator-mode = <4>;
+ };
+ };
+
+ vddcpu: VDD_OTHER {
+ regulator-name = "VDD_OTHER";
+ regulator-min-microvolt = <1050000>;
+ regulator-max-microvolt = <1250000>;
+ regulator-initial-mode = <2>;
+ regulator-allowed-modes = <2>, <4>;
+ regulator-ramp-delay = <3125>;
+ regulator-always-on;
+
+ regulator-state-standby {
+ regulator-on-in-suspend;
+ regulator-suspend-voltage = <1050000>;
+ regulator-mode = <4>;
+ };
+
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ regulator-mode = <4>;
+ };
+ };
+
+ vldo1: LDO1 {
+ regulator-name = "LDO1";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+
+ regulator-state-standby {
+ regulator-suspend-voltage = <1800000>;
+ regulator-on-in-suspend;
+ };
+
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+
+ vldo2: LDO2 {
+ regulator-name = "LDO2";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+
+ regulator-state-standby {
+ regulator-suspend-voltage = <3300000>;
+ regulator-on-in-suspend;
+ };
+
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+ };
+ };
+ };
+};
+
+&main_xtal {
+ clock-frequency = <24000000>;
+};
+
+&qspi1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_qspi1_default>;
+ status = "okay";
+
+ flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0x0>;
+ spi-max-frequency = <100000000>;
+ spi-tx-bus-width = <4>;
+ spi-rx-bus-width = <4>;
+ m25p,fast-read;
+ };
+};
+
+&pioA {
+ pinctrl_flx3_default: flx3-default {
+ pinmux = <PIN_PD16__FLEXCOM3_IO0>,
+ <PIN_PD17__FLEXCOM3_IO1>;
+ bias-pull-up;
+ };
+
+ pinctrl_flx10_default: flx10-default {
+ pinmux = <PIN_PC30__FLEXCOM10_IO0>,
+ <PIN_PC31__FLEXCOM10_IO1>;
+ bias-pull-up;
+ };
+
+ pinctrl_key_gpio_default: key-gpio-default {
+ pinmux = <PIN_PD19__GPIO>;
+ bias-pull-up;
+ };
+
+ pinctrl_led_gpio_default: led-gpio-default {
+ pinmux = <PIN_PD13__GPIO>,
+ <PIN_PD14__GPIO>,
+ <PIN_PB15__GPIO>;
+ bias-pull-up;
+ };
+
+ pinctrl_mikrobus1_an_default: mikrobus1-an-default {
+ pinmux = <PIN_PC15__GPIO>;
+ bias-disable;
+ };
+
+ pinctrl_mikrobus2_an_default: mikrobus2-an-default {
+ pinmux = <PIN_PC13__GPIO>;
+ bias-disable;
+ };
+
+ pinctrl_nand_default: nand-default {
+ pinmux = <PIN_PD9__D0>,
+ <PIN_PD10__D1>,
+ <PIN_PD11__D2>,
+ <PIN_PC21__D3>,
+ <PIN_PC22__D4>,
+ <PIN_PC23__D5>,
+ <PIN_PC24__D6>,
+ <PIN_PD2__D7>,
+ <PIN_PD3__NANDRDY>,
+ <PIN_PD4__NCS3_NANDCS>,
+ <PIN_PD5__NWE_NWR0_NANDWE>,
+ <PIN_PD6__NRD_NANDOE>,
+ <PIN_PD7__A21_NANDALE>,
+ <PIN_PD8__A22_NANDCLE>;
+ bias-disable;
+ slew-rate = <0>;
+ };
+
+ pinctrl_qspi1_default: qspi1-default {
+ pinmux = <PIN_PB22__QSPI1_IO3>,
+ <PIN_PB23__QSPI1_IO2>,
+ <PIN_PB24__QSPI1_IO1>,
+ <PIN_PB25__QSPI1_IO0>,
+ <PIN_PB26__QSPI1_CS>,
+ <PIN_PB27__QSPI1_SCK>;
+ bias-pull-up;
+ slew-rate = <0>;
+ };
+
+ pinctrl_sdmmc0_default: sdmmc0-default {
+ pinmux = <PIN_PA0__SDMMC0_CK>,
+ <PIN_PA1__SDMMC0_CMD>,
+ <PIN_PA2__SDMMC0_RSTN>,
+ <PIN_PA3__SDMMC0_DAT0>,
+ <PIN_PA4__SDMMC0_DAT1>,
+ <PIN_PA5__SDMMC0_DAT2>,
+ <PIN_PA6__SDMMC0_DAT3>;
+ bias-pull-up;
+ slew-rate = <0>;
+ };
+
+ pinctrl_sdmmc1_default: sdmmc1-default {
+ pinmux = <PIN_PB29__SDMMC1_CMD>,
+ <PIN_PB30__SDMMC1_CK>,
+ <PIN_PB31__SDMMC1_DAT0>,
+ <PIN_PC0__SDMMC1_DAT1>,
+ <PIN_PC1__SDMMC1_DAT2>,
+ <PIN_PC2__SDMMC1_DAT3>,
+ <PIN_PC4__SDMMC1_CD>;
+ bias-pull-up;
+ slew-rate = <0>;
+ };
+};
+
+&rtt {
+ atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
+};
+
+/* M.2 slot for wireless card */
+&sdmmc0 {
+ bus-width = <4>;
+ cd-gpios = <&pioA 31 GPIO_ACTIVE_LOW>;
+ disable-wp;
+ sdhci-caps-mask = <0x0 0x00200000>;
+ vmmc-supply = <&vdd_3v3>;
+ vqmmc-supply = <&vdd_3v3>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_sdmmc0_default>;
+ status = "okay";
+};
+
+/* micro SD socket */
+&sdmmc1 {
+ bus-width = <4>;
+ disable-wp;
+ sdhci-caps-mask = <0x0 0x00200000>;
+ vmmc-supply = <&vdd_3v3>;
+ vqmmc-supply = <&vdd_3v3>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_sdmmc1_default>;
+ status = "okay";
+};
+
+&slow_xtal {
+ clock-frequency = <32768>;
+};
+
+&shdwc {
+ debounce-delay-us = <976>;
+ status = "okay";
+
+ input@0 {
+ reg = <0>;
+ };
+};
+
+&tcb0 {
+ timer0: timer@0 {
+ compatible = "atmel,tcb-timer";
+ reg = <0>;
+ };
+
+ timer1: timer@1 {
+ compatible = "atmel,tcb-timer";
+ reg = <1>;
+ };
+};
+
+&trng {
+ status = "okay";
+};
+
+&vddout25 {
+ vin-supply = <&vdd_3v3>;
+ status = "okay";
+};
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