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u-boot/arch/arm/dts/imx8mn-var-som.dtsi
Hugo Villeneuve 89bd008da4 arm: dts: imx8mn-var-som: fix PHY detection bug by adding deassert delay 
While testing the ethernet interface on a Variscite symphony carrier
board using an imx8mn SOM with an onboard ADIN1300 PHY (EC hardware
configuration), the ethernet PHY is not detected.

The ADIN1300 datasheet indicate that the "Management interface
active (t4)" state is reached at most 5ms after the reset signal is
deasserted.

The device tree in Variscite custom git repository uses the following
property:

    phy-reset-post-delay = <20>;

Add a new MDIO property 'reset-deassert-us' of 20ms to have the same
delay inside the ethphy node. Adding this property fixes the problem
with the PHY detection.

Note that this SOM can also have an Atheros AR8033 PHY. In this case,
a 1ms deassert delay is sufficient. Add a comment to that effect.

Fixes: c4c1ed68c1 ("imx8mn_var_som: Add support for Variscite
VAR-SOM-MX8M-NANO board")

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
2023-07-11 14:40:04 +02:00

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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright 2019 NXP
* Copyright 2019-2020 Variscite Ltd.
* Copyright (C) 2020 Krzysztof Kozlowski <krzk@kernel.org>
*/
#include "imx8mn.dtsi"
/ {
model = "Variscite VAR-SOM-MX8MN module";
compatible = "variscite,var-som-mx8mn", "fsl,imx8mn";
aliases {
eeprom-som = &eeprom_som;
};
chosen {
stdout-path = &uart4;
};
memory@40000000 {
device_type = "memory";
reg = <0x0 0x40000000 0 0x40000000>;
};
reg_eth_phy: regulator-eth-phy {
compatible = "regulator-fixed";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_reg_eth_phy>;
regulator-name = "eth_phy_pwr";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpio2 9 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
};
&A53_0 {
cpu-supply = <&buck2_reg>;
};
&A53_1 {
cpu-supply = <&buck2_reg>;
};
&A53_2 {
cpu-supply = <&buck2_reg>;
};
&A53_3 {
cpu-supply = <&buck2_reg>;
};
&ecspi1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ecspi1>;
cs-gpios = <&gpio1 14 GPIO_ACTIVE_LOW>,
<&gpio1 0 GPIO_ACTIVE_LOW>;
/delete-property/ dmas;
/delete-property/ dma-names;
status = "okay";
/* Resistive touch controller */
touchscreen@0 {
reg = <0>;
compatible = "ti,ads7846";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_restouch>;
interrupt-parent = <&gpio1>;
interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
spi-max-frequency = <1500000>;
pendown-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>;
ti,x-min = /bits/ 16 <125>;
touchscreen-size-x = <4008>;
ti,y-min = /bits/ 16 <282>;
touchscreen-size-y = <3864>;
ti,x-plate-ohms = /bits/ 16 <180>;
touchscreen-max-pressure = <255>;
touchscreen-average-samples = <10>;
ti,debounce-tol = /bits/ 16 <3>;
ti,debounce-rep = /bits/ 16 <1>;
ti,settle-delay-usec = /bits/ 16 <150>;
ti,keep-vref-on;
wakeup-source;
};
};
&fec1 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&pinctrl_fec1>;
pinctrl-1 = <&pinctrl_fec1_sleep>;
phy-mode = "rgmii";
phy-handle = <&ethphy>;
phy-supply = <&reg_eth_phy>;
fsl,magic-packet;
status = "okay";
mdio {
#address-cells = <1>;
#size-cells = <0>;
ethphy: ethernet-phy@4 { /* AR8033 or ADIN1300 */
compatible = "ethernet-phy-ieee802.3-c22";
reg = <4>;
reset-gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
reset-assert-us = <10000>;
/*
* Deassert delay:
* ADIN1300 requires 5ms.
* AR8033 requires 1ms.
*/
reset-deassert-us = <20000>;
};
};
};
&i2c1 {
clock-frequency = <400000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c1>;
status = "okay";
pmic@4b {
compatible = "rohm,bd71847";
reg = <0x4b>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pmic>;
interrupt-parent = <&gpio2>;
interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
rohm,reset-snvs-powered;
regulators {
buck1_reg: BUCK1 {
regulator-name = "buck1";
regulator-min-microvolt = <700000>;
regulator-max-microvolt = <1300000>;
regulator-boot-on;
regulator-always-on;
regulator-ramp-delay = <1250>;
};
buck2_reg: BUCK2 {
regulator-name = "buck2";
regulator-min-microvolt = <700000>;
regulator-max-microvolt = <1300000>;
regulator-boot-on;
regulator-always-on;
regulator-ramp-delay = <1250>;
rohm,dvs-run-voltage = <1000000>;
rohm,dvs-idle-voltage = <900000>;
};
buck3_reg: BUCK3 {
regulator-name = "buck3";
regulator-min-microvolt = <700000>;
regulator-max-microvolt = <1350000>;
regulator-boot-on;
regulator-always-on;
};
buck4_reg: BUCK4 {
regulator-name = "buck4";
regulator-min-microvolt = <2600000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
regulator-always-on;
};
buck5_reg: BUCK5 {
regulator-name = "buck5";
regulator-min-microvolt = <1605000>;
regulator-max-microvolt = <1995000>;
regulator-boot-on;
regulator-always-on;
};
buck6_reg: BUCK6 {
regulator-name = "buck6";
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1400000>;
regulator-boot-on;
regulator-always-on;
};
ldo1_reg: LDO1 {
regulator-name = "ldo1";
regulator-min-microvolt = <1600000>;
regulator-max-microvolt = <1900000>;
regulator-boot-on;
regulator-always-on;
};
ldo2_reg: LDO2 {
regulator-name = "ldo2";
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <900000>;
regulator-boot-on;
regulator-always-on;
};
ldo3_reg: LDO3 {
regulator-name = "ldo3";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
regulator-always-on;
};
ldo4_reg: LDO4 {
regulator-name = "ldo4";
regulator-min-microvolt = <900000>;
regulator-max-microvolt = <1800000>;
regulator-always-on;
};
ldo5_reg: LDO5 {
regulator-compatible = "ldo5";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-always-on;
};
ldo6_reg: LDO6 {
regulator-name = "ldo6";
regulator-min-microvolt = <900000>;
regulator-max-microvolt = <1800000>;
regulator-boot-on;
regulator-always-on;
};
};
};
eeprom_som: eeprom@52 {
compatible = "atmel,24c04";
reg = <0x52>;
pagesize = <16>;
};
};
&i2c3 {
clock-frequency = <400000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c3>;
status = "okay";
/* TODO: configure audio, as of now just put a placeholder */
wm8904: codec@1a {
compatible = "wlf,wm8904";
reg = <0x1a>;
status = "disabled";
};
};
&snvs_pwrkey {
status = "okay";
};
/* Bluetooth */
&uart2 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart2>;
assigned-clocks = <&clk IMX8MN_CLK_UART2>;
assigned-clock-parents = <&clk IMX8MN_SYS_PLL1_80M>;
uart-has-rtscts;
status = "okay";
};
/* Console */
&uart4 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart4>;
status = "okay";
};
&usbotg1 {
dr_mode = "otg";
usb-role-switch;
status = "okay";
};
/* WIFI */
&usdhc1 {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default", "state_100mhz", "state_200mhz";
pinctrl-0 = <&pinctrl_usdhc1>;
pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
bus-width = <4>;
non-removable;
keep-power-in-suspend;
status = "okay";
brcmf: bcrmf@1 {
reg = <1>;
compatible = "brcm,bcm4329-fmac";
};
};
/* SD */
&usdhc2 {
assigned-clocks = <&clk IMX8MN_CLK_USDHC2>;
assigned-clock-rates = <200000000>;
pinctrl-names = "default", "state_100mhz", "state_200mhz";
pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_usdhc2_gpio>;
pinctrl-1 = <&pinctrl_usdhc2_100mhz>, <&pinctrl_usdhc2_gpio>;
pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_gpio>;
cd-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
bus-width = <4>;
vmmc-supply = <&reg_usdhc2_vmmc>;
status = "okay";
};
/* eMMC */
&usdhc3 {
assigned-clocks = <&clk IMX8MN_CLK_USDHC3_ROOT>;
assigned-clock-rates = <400000000>;
pinctrl-names = "default", "state_100mhz", "state_200mhz";
pinctrl-0 = <&pinctrl_usdhc3>;
pinctrl-1 = <&pinctrl_usdhc3_100mhz>;
pinctrl-2 = <&pinctrl_usdhc3_200mhz>;
bus-width = <8>;
non-removable;
status = "okay";
};
&wdog1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_wdog>;
fsl,ext-reset-output;
status = "okay";
};
&iomuxc {
pinctrl_ecspi1: ecspi1grp {
fsl,pins = <
MX8MN_IOMUXC_ECSPI1_SCLK_ECSPI1_SCLK 0x13
MX8MN_IOMUXC_ECSPI1_MOSI_ECSPI1_MOSI 0x13
MX8MN_IOMUXC_ECSPI1_MISO_ECSPI1_MISO 0x13
MX8MN_IOMUXC_GPIO1_IO14_GPIO1_IO14 0x13
MX8MN_IOMUXC_GPIO1_IO00_GPIO1_IO0 0x13
>;
};
pinctrl_fec1: fec1grp {
fsl,pins = <
MX8MN_IOMUXC_ENET_MDC_ENET1_MDC 0x3
MX8MN_IOMUXC_ENET_MDIO_ENET1_MDIO 0x3
MX8MN_IOMUXC_ENET_TD3_ENET1_RGMII_TD3 0x1f
MX8MN_IOMUXC_ENET_TD2_ENET1_RGMII_TD2 0x1f
MX8MN_IOMUXC_ENET_TD1_ENET1_RGMII_TD1 0x1f
MX8MN_IOMUXC_ENET_TD0_ENET1_RGMII_TD0 0x1f
MX8MN_IOMUXC_ENET_RD3_ENET1_RGMII_RD3 0x91
MX8MN_IOMUXC_ENET_RD2_ENET1_RGMII_RD2 0x91
MX8MN_IOMUXC_ENET_RD1_ENET1_RGMII_RD1 0x91
MX8MN_IOMUXC_ENET_RD0_ENET1_RGMII_RD0 0x91
MX8MN_IOMUXC_ENET_TXC_ENET1_RGMII_TXC 0x1f
MX8MN_IOMUXC_ENET_RXC_ENET1_RGMII_RXC 0x91
MX8MN_IOMUXC_ENET_RX_CTL_ENET1_RGMII_RX_CTL 0x91
MX8MN_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL 0x1f
MX8MN_IOMUXC_GPIO1_IO09_GPIO1_IO9 0x19
>;
};
pinctrl_fec1_sleep: fec1sleepgrp {
fsl,pins = <
MX8MN_IOMUXC_ENET_MDC_GPIO1_IO16 0x120
MX8MN_IOMUXC_ENET_MDIO_GPIO1_IO17 0x120
MX8MN_IOMUXC_ENET_TD3_GPIO1_IO18 0x120
MX8MN_IOMUXC_ENET_TD2_GPIO1_IO19 0x120
MX8MN_IOMUXC_ENET_TD1_GPIO1_IO20 0x120
MX8MN_IOMUXC_ENET_TD0_GPIO1_IO21 0x120
MX8MN_IOMUXC_ENET_RD3_GPIO1_IO29 0x120
MX8MN_IOMUXC_ENET_RD2_GPIO1_IO28 0x120
MX8MN_IOMUXC_ENET_RD1_GPIO1_IO27 0x120
MX8MN_IOMUXC_ENET_RD0_GPIO1_IO26 0x120
MX8MN_IOMUXC_ENET_TXC_GPIO1_IO23 0x120
MX8MN_IOMUXC_ENET_RXC_GPIO1_IO25 0x120
MX8MN_IOMUXC_ENET_RX_CTL_GPIO1_IO24 0x120
MX8MN_IOMUXC_ENET_TX_CTL_GPIO1_IO22 0x120
MX8MN_IOMUXC_GPIO1_IO09_GPIO1_IO9 0x120
>;
};
pinctrl_i2c1: i2c1grp {
fsl,pins = <
MX8MN_IOMUXC_I2C1_SCL_I2C1_SCL 0x400001c3
MX8MN_IOMUXC_I2C1_SDA_I2C1_SDA 0x400001c3
>;
};
pinctrl_i2c3: i2c3grp {
fsl,pins = <
MX8MN_IOMUXC_I2C3_SCL_I2C3_SCL 0x400001c3
MX8MN_IOMUXC_I2C3_SDA_I2C3_SDA 0x400001c3
>;
};
pinctrl_pmic: pmicirqgrp {
fsl,pins = <
MX8MN_IOMUXC_SD1_DATA6_GPIO2_IO8 0x141
>;
};
pinctrl_reg_eth_phy: regethphygrp {
fsl,pins = <
MX8MN_IOMUXC_SD1_DATA7_GPIO2_IO9 0x41
>;
};
pinctrl_restouch: restouchgrp {
fsl,pins = <
MX8MN_IOMUXC_GPIO1_IO03_GPIO1_IO3 0x1c0
>;
};
pinctrl_uart2: uart2grp {
fsl,pins = <
MX8MN_IOMUXC_SAI3_TXFS_UART2_DCE_RX 0x140
MX8MN_IOMUXC_SAI3_TXC_UART2_DCE_TX 0x140
MX8MN_IOMUXC_SAI3_RXC_UART2_DCE_CTS_B 0x140
MX8MN_IOMUXC_SAI3_RXD_UART2_DCE_RTS_B 0x140
>;
};
pinctrl_uart4: uart4grp {
fsl,pins = <
MX8MN_IOMUXC_UART4_RXD_UART4_DCE_RX 0x140
MX8MN_IOMUXC_UART4_TXD_UART4_DCE_TX 0x140
>;
};
pinctrl_usdhc1: usdhc1grp {
fsl,pins = <
MX8MN_IOMUXC_SD1_CLK_USDHC1_CLK 0x190
MX8MN_IOMUXC_SD1_CMD_USDHC1_CMD 0x1d0
MX8MN_IOMUXC_SD1_DATA0_USDHC1_DATA0 0x1d0
MX8MN_IOMUXC_SD1_DATA1_USDHC1_DATA1 0x1d0
MX8MN_IOMUXC_SD1_DATA2_USDHC1_DATA2 0x1d0
MX8MN_IOMUXC_SD1_DATA3_USDHC1_DATA3 0x1d0
>;
};
pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp {
fsl,pins = <
MX8MN_IOMUXC_SD1_CLK_USDHC1_CLK 0x194
MX8MN_IOMUXC_SD1_CMD_USDHC1_CMD 0x1d4
MX8MN_IOMUXC_SD1_DATA0_USDHC1_DATA0 0x1d4
MX8MN_IOMUXC_SD1_DATA1_USDHC1_DATA1 0x1d4
MX8MN_IOMUXC_SD1_DATA2_USDHC1_DATA2 0x1d4
MX8MN_IOMUXC_SD1_DATA3_USDHC1_DATA3 0x1d4
>;
};
pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp {
fsl,pins = <
MX8MN_IOMUXC_SD1_CLK_USDHC1_CLK 0x196
MX8MN_IOMUXC_SD1_CMD_USDHC1_CMD 0x1d6
MX8MN_IOMUXC_SD1_DATA0_USDHC1_DATA0 0x1d6
MX8MN_IOMUXC_SD1_DATA1_USDHC1_DATA1 0x1d6
MX8MN_IOMUXC_SD1_DATA2_USDHC1_DATA2 0x1d6
MX8MN_IOMUXC_SD1_DATA3_USDHC1_DATA3 0x1d6
>;
};
pinctrl_usdhc2_gpio: usdhc2gpiogrp {
fsl,pins = <
MX8MN_IOMUXC_GPIO1_IO10_GPIO1_IO10 0x41
>;
};
pinctrl_usdhc2: usdhc2grp {
fsl,pins = <
MX8MN_IOMUXC_SD2_CLK_USDHC2_CLK 0x190
MX8MN_IOMUXC_SD2_CMD_USDHC2_CMD 0x1d0
MX8MN_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d0
MX8MN_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d0
MX8MN_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d0
MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d0
MX8MN_IOMUXC_GPIO1_IO04_USDHC2_VSELECT 0x1d0
>;
};
pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
fsl,pins = <
MX8MN_IOMUXC_SD2_CLK_USDHC2_CLK 0x194
MX8MN_IOMUXC_SD2_CMD_USDHC2_CMD 0x1d4
MX8MN_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d4
MX8MN_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d4
MX8MN_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d4
MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d4
MX8MN_IOMUXC_GPIO1_IO04_USDHC2_VSELECT 0x1d0
>;
};
pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
fsl,pins = <
MX8MN_IOMUXC_SD2_CLK_USDHC2_CLK 0x196
MX8MN_IOMUXC_SD2_CMD_USDHC2_CMD 0x1d6
MX8MN_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d6
MX8MN_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d6
MX8MN_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d6
MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d6
MX8MN_IOMUXC_GPIO1_IO04_USDHC2_VSELECT 0x1d0
>;
};
pinctrl_usdhc3: usdhc3grp {
fsl,pins = <
MX8MN_IOMUXC_NAND_WE_B_USDHC3_CLK 0x190
MX8MN_IOMUXC_NAND_WP_B_USDHC3_CMD 0x1d0
MX8MN_IOMUXC_NAND_DATA04_USDHC3_DATA0 0x1d0
MX8MN_IOMUXC_NAND_DATA05_USDHC3_DATA1 0x1d0
MX8MN_IOMUXC_NAND_DATA06_USDHC3_DATA2 0x1d0
MX8MN_IOMUXC_NAND_DATA07_USDHC3_DATA3 0x1d0
MX8MN_IOMUXC_NAND_RE_B_USDHC3_DATA4 0x1d0
MX8MN_IOMUXC_NAND_CE2_B_USDHC3_DATA5 0x1d0
MX8MN_IOMUXC_NAND_CE3_B_USDHC3_DATA6 0x1d0
MX8MN_IOMUXC_NAND_CLE_USDHC3_DATA7 0x1d0
MX8MN_IOMUXC_NAND_CE1_B_USDHC3_STROBE 0x190
>;
};
pinctrl_usdhc3_100mhz: usdhc3-100mhzgrp {
fsl,pins = <
MX8MN_IOMUXC_NAND_WE_B_USDHC3_CLK 0x194
MX8MN_IOMUXC_NAND_WP_B_USDHC3_CMD 0x1d4
MX8MN_IOMUXC_NAND_DATA04_USDHC3_DATA0 0x1d4
MX8MN_IOMUXC_NAND_DATA05_USDHC3_DATA1 0x1d4
MX8MN_IOMUXC_NAND_DATA06_USDHC3_DATA2 0x1d4
MX8MN_IOMUXC_NAND_DATA07_USDHC3_DATA3 0x1d4
MX8MN_IOMUXC_NAND_RE_B_USDHC3_DATA4 0x1d4
MX8MN_IOMUXC_NAND_CE2_B_USDHC3_DATA5 0x1d4
MX8MN_IOMUXC_NAND_CE3_B_USDHC3_DATA6 0x1d4
MX8MN_IOMUXC_NAND_CLE_USDHC3_DATA7 0x1d4
MX8MN_IOMUXC_NAND_CE1_B_USDHC3_STROBE 0x194
>;
};
pinctrl_usdhc3_200mhz: usdhc3-200mhzgrp {
fsl,pins = <
MX8MN_IOMUXC_NAND_WE_B_USDHC3_CLK 0x196
MX8MN_IOMUXC_NAND_WP_B_USDHC3_CMD 0x1d6
MX8MN_IOMUXC_NAND_DATA04_USDHC3_DATA0 0x1d6
MX8MN_IOMUXC_NAND_DATA05_USDHC3_DATA1 0x1d6
MX8MN_IOMUXC_NAND_DATA06_USDHC3_DATA2 0x1d6
MX8MN_IOMUXC_NAND_DATA07_USDHC3_DATA3 0x1d6
MX8MN_IOMUXC_NAND_RE_B_USDHC3_DATA4 0x1d6
MX8MN_IOMUXC_NAND_CE2_B_USDHC3_DATA5 0x1d6
MX8MN_IOMUXC_NAND_CE3_B_USDHC3_DATA6 0x1d6
MX8MN_IOMUXC_NAND_CLE_USDHC3_DATA7 0x1d6
MX8MN_IOMUXC_NAND_CE1_B_USDHC3_STROBE 0x196
>;
};
pinctrl_wdog: wdoggrp {
fsl,pins = <
MX8MN_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B 0x166
>;
};
};
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