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

From: Jerry.Ray
Date: Tue Sep 13 2022 - 11:58:26 EST

>> 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";
>> +};
>