RE: [linux][PATCH v9 2/2] dts: arm: at91: Add SAMA5D3-EDS Board

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>> The SAMA5D3-EDS board is an Ethernet Development Platform allowing for 
>> evaluating many Microchip ethernet switch and PHY products.  Various 
>> daughter cards can connect via an RGMII connector or an RMII connector.
>> 
>> The EDS board is not intended for stand-alone use and has no ethernet 
>> capabilities when no daughter board is connected.  As such, this 
>> device tree is intended to be used with a DT overlay defining the add-on board.
>> To better ensure consistency, some items are defined here as a form of 
>> documentation so that all add-on overlays will use the same terms.
>> 
>> Link: 
>> https://www.microchip.com/en-us/development-tool/SAMA5D3-ETHERNET-DEVE
>> LOPMENT-SYSTEM
>> Signed-off-by: Jerry Ray <jerry.ray@xxxxxxxxxxxxx>
>> ---
>> v8->v9:
>>  - Changed node name from gpio to gpio-inputs
>
>Why not gpio-keys as all other DTSes are doing? Anyway, I can change it while applying.
>
>Thank you,
>Claudiu Beznea
>

gpio-keys is the compatible string name. I wanted the node name to be unique
for grep purposes.

Regards,
Jerry.

>> v7->v8:
>>  - correcting patch subject line.
>> v6->v7:
>>  - Renamed regulators, making things more consistent.
>>  - Made slow_xtal and main_xtal entries direct overrides.
>> v5->v6:
>>  - Replaced underscores in names where I can, improving naming.
>> v4->v5:
>>  - patch now applies to v6.0-rc2
>> v3->v4:
>>  - Fixed regulators as necessary to get the board to boot from SD Card.
>> v2->v3:
>>  - Alphabetized pinctrl entries.
>>  - cleaned up a warning in the regulators section.
>>  - License tweaked to 'OR MIT'
>>  - Included Makefile change
>> v1->v2:
>>  - Modified the compatible field in the device tree to reflect Microchip
>>    Ethernet Development System Board.
>> ---
>>  arch/arm/boot/dts/Makefile             |   1 +
>>  arch/arm/boot/dts/at91-sama5d3_eds.dts | 307 
>> +++++++++++++++++++++++++
>>  2 files changed, 308 insertions(+)
>>  create mode 100644 arch/arm/boot/dts/at91-sama5d3_eds.dts
>> 
>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile 
>> index 05d8aef6e5d2..e92e639a2dc3 100644
>> --- a/arch/arm/boot/dts/Makefile
>> +++ b/arch/arm/boot/dts/Makefile
>> @@ -61,6 +61,7 @@ dtb-$(CONFIG_SOC_SAM_V7) += \
>>  	at91-sama5d2_icp.dtb \
>>  	at91-sama5d2_ptc_ek.dtb \
>>  	at91-sama5d2_xplained.dtb \
>> +	at91-sama5d3_eds.dtb \
>>  	at91-sama5d3_ksz9477_evb.dtb \
>>  	at91-sama5d3_xplained.dtb \
>>  	at91-dvk_som60.dtb \
>> diff --git a/arch/arm/boot/dts/at91-sama5d3_eds.dts 
>> b/arch/arm/boot/dts/at91-sama5d3_eds.dts
>> new file mode 100644
>> index 000000000000..bae6819217e0
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/at91-sama5d3_eds.dts
>> @@ -0,0 +1,307 @@
>> +// SPDX-License-Identifier: GPL-2.0+ OR MIT
>> +/*
>> + * at91-sama5d3_eds.dts - Device Tree file for the SAMA5D3 Ethernet
>> + *    Development System board.
>> + *
>> + * Copyright (C) 2022 Microchip Technology Inc. and its subsidiaries
>> + *
>> + * Author: Jerry Ray <jerry.ray@xxxxxxxxxxxxx>  */ /dts-v1/; #include 
>> +"sama5d36.dtsi"
>> +
>> +/ {
>> +	model = "SAMA5D3 Ethernet Development System";
>> +	compatible = "microchip,sama5d3-eds", "atmel,sama5d36",
>> +		     "atmel,sama5d3", "atmel,sama5";
>> +
>> +	chosen {
>> +		stdout-path = "serial0:115200n8";
>> +	};
>> +
>> +	gpio-inputs {
>> +		compatible = "gpio-keys";
>> +
>> +		pinctrl-names = "default";
>> +		pinctrl-0 = <&pinctrl_key_gpio>;
>> +
>> +		button-3 {
>> +			label = "PB_USER";
>> +			gpios = <&pioE 29 GPIO_ACTIVE_LOW>;
>> +			linux,code = <0x104>;
>> +			wakeup-source;
>> +		};
>> +	};
>> +
>> +	memory@20000000 {
>> +		reg = <0x20000000 0x10000000>;
>> +	};
>> +
>> +	vcc_3v3_reg: regulator-1 {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "VCC_3V3";
>> +		regulator-min-microvolt = <3300000>;
>> +		regulator-max-microvolt = <3300000>;
>> +		regulator-always-on;
>> +	};
>> +
>> +	vcc_2v5_reg: regulator-2 {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "VCC_2V5";
>> +		regulator-min-microvolt = <2500000>;
>> +		regulator-max-microvolt = <2500000>;
>> +		regulator-always-on;
>> +		vin-supply = <&vcc_3v3_reg>;
>> +	};
>> +
>> +	vcc_1v8_reg: regulator-3 {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "VCC_1V8";
>> +		regulator-min-microvolt = <1800000>;
>> +		regulator-max-microvolt = <1800000>;
>> +		regulator-always-on;
>> +		vin-supply = <&vcc_3v3_reg>;
>> +	};
>> +
>> +	vcc_1v2_reg: regulator-4 {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "VCC_1V2";
>> +		regulator-min-microvolt = <1200000>;
>> +		regulator-max-microvolt = <1200000>;
>> +		regulator-always-on;
>> +	};
>> +
>> +	vcc_mmc0_reg: regulator-5 {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "mmc0-card-supply";
>> +		regulator-min-microvolt = <3300000>;
>> +		regulator-max-microvolt = <3300000>;
>> +		regulator-always-on;
>> +		pinctrl-names = "default";
>> +		pinctrl-0 = <&pinctrl_vcc_mmc0_reg_gpio>;
>> +		gpio = <&pioE 2 GPIO_ACTIVE_LOW>;
>> +	};
>> +};
>> +
>> +&can0 {
>> +	status = "okay";
>> +};
>> +
>> +&dbgu {
>> +	status = "okay";
>> +};
>> +
>> +&ebi {
>> +	pinctrl-0 = <&pinctrl_ebi_nand_addr>;
>> +	pinctrl-names = "default";
>> +	status = "okay";
>> +
>> +	nand_controller: nand-controller {
>> +		status = "okay";
>> +
>> +		nand@3 {
>> +			reg = <0x3 0x0 0x2>;
>> +			atmel,rb = <0>;
>> +			nand-bus-width = <8>;
>> +			nand-ecc-mode = "hw";
>> +			nand-ecc-strength = <4>;
>> +			nand-ecc-step-size = <512>;
>> +			nand-on-flash-bbt;
>> +			label = "atmel_nand";
>> +
>> +			partitions {
>> +				compatible = "fixed-partitions";
>> +				#address-cells = <1>;
>> +				#size-cells = <1>;
>> +
>> +				at91bootstrap@0 {
>> +					label = "at91bootstrap";
>> +					reg = <0x0 0x40000>;
>> +				};
>> +
>> +				bootloader@40000 {
>> +					label = "bootloader";
>> +					reg = <0x40000 0xc0000>;
>> +				};
>> +
>> +				bootloaderenvred@100000 {
>> +					label = "bootloader env redundant";
>> +					reg = <0x100000 0x40000>;
>> +				};
>> +
>> +				bootloaderenv@140000 {
>> +					label = "bootloader env";
>> +					reg = <0x140000 0x40000>;
>> +				};
>> +
>> +				dtb@180000 {
>> +					label = "device tree";
>> +					reg = <0x180000 0x80000>;
>> +				};
>> +
>> +				kernel@200000 {
>> +					label = "kernel";
>> +					reg = <0x200000 0x600000>;
>> +				};
>> +
>> +				rootfs@800000 {
>> +					label = "rootfs";
>> +					reg = <0x800000 0x0f800000>;
>> +				};
>> +			};
>> +		};
>> +	};
>> +};
>> +
>> +&i2c0 {
>> +	pinctrl-0 = <&pinctrl_i2c0_pu>;
>> +	status = "okay";
>> +};
>> +
>> +&i2c1 {
>> +	status = "okay";
>> +};
>> +
>> +&i2c2 {
>> +	pinctrl-0 = <&pinctrl_i2c2_pu>;
>> +	status = "okay";
>> +};
>> +
>> +&main_xtal {
>> +	clock-frequency = <12000000>;
>> +};
>> +
>> +&mmc0 {
>> +	pinctrl-0 = <&pinctrl_mmc0_clk_cmd_dat0 &pinctrl_mmc0_dat1_3
>> +		     &pinctrl_mmc0_dat4_7 &pinctrl_mmc0_cd>;
>> +	vmmc-supply = <&vcc_mmc0_reg>;
>> +	vqmmc-supply = <&vcc_3v3_reg>;
>> +	status = "okay";
>> +	slot@0 {
>> +		reg = <0>;
>> +		bus-width = <8>;
>> +		cd-gpios = <&pioE 0 GPIO_ACTIVE_LOW>;
>> +	};
>> +};
>> +
>> +&pinctrl {
>> +	board {
>> +		pinctrl_i2c0_pu: i2c0-pu {
>> +			atmel,pins =
>> +				<AT91_PIOA 30 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>,
>> +				<AT91_PIOA 31 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;
>> +		};
>> +
>> +		pinctrl_i2c2_pu: i2c2-pu {
>> +			atmel,pins =
>> +				<AT91_PIOA 18 AT91_PERIPH_B AT91_PINCTRL_PULL_UP>,
>> +				<AT91_PIOA 19 AT91_PERIPH_B AT91_PINCTRL_PULL_UP>;
>> +		};
>> +
>> +		pinctrl_key_gpio: key-gpio-0 {
>> +			atmel,pins =
>> +				<AT91_PIOE 29 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>;
>> +		};
>> +
>> +		pinctrl_mmc0_cd: mmc0-cd {
>> +			atmel,pins =
>> +				<AT91_PIOE 0 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>;
>> +		};
>> +
>> +		/* Reserved for reset signal to the RGMII connector. */
>> +		pinctrl_rgmii_rstn: rgmii-rstn {
>> +			atmel,pins =
>> +				<AT91_PIOD 18 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>;
>> +		};
>> +
>> +		/* Reserved for an interrupt line from the RMII and RGMII connectors. */
>> +		pinctrl_spi_irqn: spi-irqn {
>> +			atmel,pins =
>> +				<AT91_PIOB 28 AT91_PERIPH_GPIO AT91_PINCTRL_DEGLITCH>;
>> +		};
>> +
>> +		pinctrl_spi0_cs: spi0-cs-default {
>> +			atmel,pins =
>> +				<AT91_PIOD 13 AT91_PERIPH_GPIO AT91_PINCTRL_NONE
>> +				 AT91_PIOD 16 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
>> +		};
>> +
>> +		pinctrl_spi1_cs: spi1-cs-default {
>> +			atmel,pins = <AT91_PIOC 25 AT91_PERIPH_GPIO AT91_PINCTRL_NONE
>> +				      AT91_PIOC 28 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
>> +		};
>> +
>> +		pinctrl_usba_vbus: usba-vbus {
>> +			atmel,pins =
>> +				<AT91_PIOE 9 AT91_PERIPH_GPIO AT91_PINCTRL_DEGLITCH>;
>> +		};
>> +
>> +		pinctrl_usb_default: usb-default {
>> +			atmel,pins =
>> +				<AT91_PIOE 3 AT91_PERIPH_GPIO AT91_PINCTRL_NONE
>> +				 AT91_PIOE 4 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
>> +		};
>> +
>> +		/* Reserved for VBUS fault interrupt. */
>> +		pinctrl_vbusfault_irqn: vbusfault-irqn {
>> +			atmel,pins =
>> +				<AT91_PIOE 5 AT91_PERIPH_GPIO AT91_PINCTRL_DEGLITCH>;
>> +		};
>> +
>> +		pinctrl_vcc_mmc0_reg_gpio: vcc-mmc0-reg-gpio-default {
>> +			atmel,pins = <AT91_PIOE 2 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP>;
>> +		};
>> +	};
>> +};
>> +
>> +&slow_xtal {
>> +	clock-frequency = <32768>;
>> +};
>> +
>> +&spi0 {
>> +	pinctrl-names = "default", "cs";
>> +	pinctrl-1 = <&pinctrl_spi0_cs>;
>> +	cs-gpios = <&pioD 13 0>, <0>, <0>, <&pioD 16 0>;
>> +	status = "okay";
>> +};
>> +
>> +&spi1 {
>> +	pinctrl-names = "default", "cs";
>> +	pinctrl-1 = <&pinctrl_spi1_cs>;
>> +	cs-gpios = <&pioC 25 0>, <0>, <0>, <&pioC 28 0>;
>> +	status = "okay";
>> +};
>> +
>> +&tcb0 {
>> +	timer0: timer@0 {
>> +		compatible = "atmel,tcb-timer";
>> +		reg = <0>;
>> +	};
>> +
>> +	timer1: timer@1 {
>> +		compatible = "atmel,tcb-timer";
>> +		reg = <1>;
>> +	};
>> +};
>> +
>> +&usb0 {	/* USB Device port with VBUS detection. */
>> +	atmel,vbus-gpio = <&pioE 9 GPIO_ACTIVE_HIGH>;
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_usba_vbus>;
>> +	status = "okay";
>> +};
>> +
>> +&usb1 {	/* 3-port Host. First port is unused. */
>> +	atmel,vbus-gpio = <0
>> +			   &pioE 3 GPIO_ACTIVE_HIGH
>> +			   &pioE 4 GPIO_ACTIVE_HIGH
>> +			  >;
>> +	num-ports = <3>;
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_usb_default>;
>> +	status = "okay";
>> +};
>> +
>> +&usb2 {
>> +	status = "okay";
>> +};
>




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