[PATCH v4 39/39] ARM: dts: at91: sam9x75_curiosity: add sam9x75 curiosity board

[Varshini Rajendran <varshini.rajendran@microchip.com>]

Add device tree file for sam9x75 curiosity board.

Signed-off-by: Varshini Rajendran <varshini.rajendran@microchip.com>
---
Changes in v4:
- Removed full node paths
- Renamed Leds with color names
- Corrected regulator node names
- Added support for classd and i2s nodes and their corresponding
  pinctrl nodes
- Dropped USB nodes owing to the discussion here
https://lore.kernel.org/linux-devicetree/CAL_JsqJ9PrX6fj-EbffeJce09MXs=B7t+KS_kOinxaRx38=WxA@mail.gmail.com/
(Explained elaborately in the cover letter)
- Updated the linux,code property with the necessary value
---
 arch/arm/boot/dts/microchip/Makefile          |   3 +
 .../dts/microchip/at91-sam9x75_curiosity.dts  | 309 ++++++++++++++++++
 2 files changed, 312 insertions(+)
 create mode 100644 arch/arm/boot/dts/microchip/at91-sam9x75_curiosity.dts

diff --git a/arch/arm/boot/dts/microchip/Makefile b/arch/arm/boot/dts/microchip/Makefile
index efde9546c8f4..5b3d518da319 100644
--- a/arch/arm/boot/dts/microchip/Makefile
+++ b/arch/arm/boot/dts/microchip/Makefile
@@ -12,6 +12,7 @@ DTC_FLAGS_at91-sama5d3_eds := -@
 DTC_FLAGS_at91-sama5d3_xplained := -@
 DTC_FLAGS_at91-sama5d4_xplained := -@
 DTC_FLAGS_at91-sama7g5ek := -@
+DTC_FLAGS_at91-sam9x75_curiosity := -@
 dtb-$(CONFIG_SOC_AT91RM9200) += \
 	at91rm9200ek.dtb \
 	mpa1600.dtb
@@ -59,6 +60,8 @@ dtb-$(CONFIG_SOC_AT91SAM9) += \
 dtb-$(CONFIG_SOC_SAM9X60) += \
 	at91-sam9x60_curiosity.dtb \
 	at91-sam9x60ek.dtb
+dtb-$(CONFIG_SOC_SAM9X7) += \
+	at91-sam9x75_curiosity.dtb
 dtb-$(CONFIG_SOC_SAM_V7) += \
 	at91-kizbox2-2.dtb \
 	at91-kizbox3-hs.dtb \
diff --git a/arch/arm/boot/dts/microchip/at91-sam9x75_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sam9x75_curiosity.dts
new file mode 100644
index 000000000000..be37022d3d05
--- /dev/null
+++ b/arch/arm/boot/dts/microchip/at91-sam9x75_curiosity.dts
@@ -0,0 +1,309 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * at91-sam9x75_curiosity.dts - Device Tree file for Microchip SAM9X75 Curiosity board
+ *
+ * Copyright (C) 2023 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Varshini Rajendran <varshini.rajendran@microchip.com>
+ */
+/dts-v1/;
+#include "sam9x7.dtsi"
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Microchip SAM9X75 Curiosity";
+	compatible = "microchip,sam9x75-curiosity", "microchip,sam9x7", "atmel,at91sam9";
+
+	aliases {
+		i2c0 = &i2c6;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_key_gpio_default>;
+
+		button-user {
+			label = "USER";
+			gpios = <&pioC 9 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_0>;
+			wakeup-source;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_led_gpio_default>;
+
+		led-red {
+			label = "red";
+			gpios = <&pioC 19 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-green {
+			label = "green";
+			gpios = <&pioC 21 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-blue {
+			label = "blue";
+			gpios = <&pioC 20 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
+
+	memory@20000000 {
+		device_type = "memory";
+		reg = <0x20000000 0x10000000>;
+	};
+};
+
+&classd {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_classd>;
+	atmel,pwm-type = "diff";
+	atmel,non-overlap-time = <10>;
+	status = "okay";
+};
+
+&dbgu {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_dbgu>;
+	status = "okay";
+};
+
+&dma0 {
+	status = "okay";
+};
+
+&flx6 {
+	atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_TWI>;
+	status = "okay";
+};
+
+&i2c6 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_flx6_default>;
+	i2c-analog-filter;
+	i2c-digital-filter;
+	i2c-digital-filter-width-ns = <35>;
+	status = "okay";
+
+	pmic@5b {
+		compatible = "microchip,mcp16502";
+		reg = <0x5b>;
+
+		regulators {
+			vdd_3v3: VDD_IO {
+				regulator-name = "VDD_IO";
+				regulator-min-microvolt = <3000000>;
+				regulator-max-microvolt = <3600000>;
+				regulator-initial-mode = <2>;
+				regulator-allowed-modes = <2>, <4>;
+				regulator-always-on;
+
+				regulator-state-standby {
+					regulator-on-in-suspend;
+					regulator-mode = <4>;
+				};
+
+				regulator-state-mem {
+					regulator-mode = <4>;
+				};
+			};
+
+			vddioddr: VDD_DDR {
+				regulator-name = "VDD_DDR";
+				regulator-min-microvolt = <1283000>;
+				regulator-max-microvolt = <1450000>;
+				regulator-initial-mode = <2>;
+				regulator-allowed-modes = <2>, <4>;
+				regulator-always-on;
+
+				regulator-state-standby {
+					regulator-on-in-suspend;
+					regulator-mode = <4>;
+				};
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-mode = <4>;
+				};
+			};
+
+			vddcore: VDD_CORE {
+				regulator-name = "VDD_CORE";
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1210000>;
+				regulator-initial-mode = <2>;
+				regulator-allowed-modes = <2>, <4>;
+				regulator-always-on;
+
+				regulator-state-standby {
+					regulator-on-in-suspend;
+					regulator-mode = <4>;
+				};
+
+				regulator-state-mem {
+					regulator-mode = <4>;
+				};
+			};
+
+			vddcpu: VDD_OTHER {
+				regulator-name = "VDD_OTHER";
+				regulator-min-microvolt = <1700000>;
+				regulator-max-microvolt = <3600000>;
+				regulator-initial-mode = <2>;
+				regulator-allowed-modes = <2>, <4>;
+				regulator-ramp-delay = <3125>;
+				regulator-always-on;
+
+				regulator-state-standby {
+					regulator-on-in-suspend;
+					regulator-mode = <4>;
+				};
+
+				regulator-state-mem {
+					regulator-mode = <4>;
+				};
+			};
+
+			vldo1: LDO1 {
+				regulator-name = "LDO1";
+				regulator-min-microvolt = <1200000>;
+				regulator-max-microvolt = <3700000>;
+				regulator-always-on;
+
+				regulator-state-standby {
+					regulator-on-in-suspend;
+				};
+			};
+
+			vldo2: LDO2 {
+				regulator-name = "LDO2";
+				regulator-min-microvolt = <1200000>;
+				regulator-max-microvolt = <3700000>;
+
+				regulator-state-standby {
+					regulator-on-in-suspend;
+				};
+			};
+		};
+	};
+};
+
+&i2s {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2s_default>;
+	#sound-dai-cells = <0>;
+	status = "disabled";
+};
+
+&main_xtal {
+	clock-frequency = <24000000>;
+};
+
+&pinctrl {
+
+	classd {
+		pinctrl_classd: classd {
+			atmel,pins =
+				<AT91_PIOA 18 AT91_PERIPH_C AT91_PINCTRL_PULL_UP
+				 AT91_PIOA 19 AT91_PERIPH_C AT91_PINCTRL_PULL_DOWN>;
+		};
+	};
+
+	dbgu {
+		pinctrl_dbgu: dbgu-0 {
+			atmel,pins = <AT91_PIOA 26 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+				      AT91_PIOA 27 AT91_PERIPH_A AT91_PINCTRL_NONE>;
+		};
+	};
+
+	flexcom {
+		pinctrl_flx6_default: flx6-twi {
+			atmel,pins =
+				<AT91_PIOA 24 AT91_PERIPH_A AT91_PINCTRL_PULL_UP
+				 AT91_PIOA 25 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;
+		};
+	};
+
+	gpio-keys {
+		pinctrl_key_gpio_default: key-gpio-default {
+			atmel,pins = <AT91_PIOC 9 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
+		};
+	};
+
+	i2s {
+		pinctrl_i2s_default: i2s {
+			atmel,pins =
+				<AT91_PIOB 26 AT91_PERIPH_D AT91_PINCTRL_NONE		/* I2SCK */
+				 AT91_PIOB 15 AT91_PERIPH_D AT91_PINCTRL_NONE		/* I2SWS */
+				 AT91_PIOB 16 AT91_PERIPH_D AT91_PINCTRL_NONE		/* I2SDIN */
+				 AT91_PIOB 17 AT91_PERIPH_D AT91_PINCTRL_NONE		/* I2SDOUT */
+				 AT91_PIOB 25 AT91_PERIPH_D AT91_PINCTRL_NONE>;		/* I2SMCK */
+		};
+	};
+
+	leds {
+		pinctrl_led_gpio_default: led-gpio-default {
+			atmel,pins = <AT91_PIOC 19 AT91_PERIPH_GPIO AT91_PINCTRL_NONE
+				      AT91_PIOC 21 AT91_PERIPH_GPIO AT91_PINCTRL_NONE
+				      AT91_PIOC 20 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
+		};
+	};
+
+	sdmmc0 {
+		pinctrl_sdmmc0_default: sdmmc0 {
+			atmel,pins =
+				<AT91_PIOA 2 AT91_PERIPH_A (AT91_PINCTRL_DRIVE_STRENGTH_HI | AT91_PINCTRL_SLEWRATE_DIS)					/* PA2 CK  periph A with pullup */
+				 AT91_PIOA 1 AT91_PERIPH_A (AT91_PINCTRL_PULL_UP | AT91_PINCTRL_DRIVE_STRENGTH_HI | AT91_PINCTRL_SLEWRATE_DIS)		/* PA1 CMD periph A with pullup */
+				 AT91_PIOA 0 AT91_PERIPH_A (AT91_PINCTRL_PULL_UP | AT91_PINCTRL_DRIVE_STRENGTH_HI | AT91_PINCTRL_SLEWRATE_DIS)		/* PA0 DAT0 periph A */
+				 AT91_PIOA 3 AT91_PERIPH_A (AT91_PINCTRL_PULL_UP | AT91_PINCTRL_DRIVE_STRENGTH_HI | AT91_PINCTRL_SLEWRATE_DIS)		/* PA3 DAT1 periph A with pullup */
+				 AT91_PIOA 4 AT91_PERIPH_A (AT91_PINCTRL_PULL_UP | AT91_PINCTRL_DRIVE_STRENGTH_HI | AT91_PINCTRL_SLEWRATE_DIS)		/* PA4 DAT2 periph A with pullup */
+				 AT91_PIOA 5 AT91_PERIPH_A (AT91_PINCTRL_PULL_UP | AT91_PINCTRL_DRIVE_STRENGTH_HI | AT91_PINCTRL_SLEWRATE_DIS)>;	/* PA5 DAT3 periph A with pullup */
+		};
+	};
+
+}; /* pinctrl */
+
+&rtt {
+	atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
+};
+
+&sdmmc0 {
+	bus-width = <4>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sdmmc0_default>;
+	cd-gpios = <&pioA 23 GPIO_ACTIVE_LOW>;
+	disable-wp;
+	status = "okay";
+};
+
+&slow_xtal {
+	clock-frequency = <32768>;
+};
+
+&power_management {
+	debounce-delay-us = <976>;
+	status = "okay";
+
+	input@0 {
+		reg = <0>;
+	};
+};
+
+&trng {
+	status = "okay";
+};
+
+&watchdog {
+	status = "okay";
+};
-- 
2.25.1