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

[<Claudiu.Beznea@microchip.com>]

On 09.09.2022 19:30, Jerry Ray wrote:
> 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-DEVELOPMENT-SYSTEM
> Signed-off-by: Jerry Ray <jerry.ray@microchip.com>
> ---
> 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

> 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@microchip.com>
> + */
> +/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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