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linux-loongson/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-rdk.dts
Wadim Egorov 945e48a39c arm64: dts: ti: k3-am642-phyboard-electra: Fix PRU-ICSSG Ethernet ports 
For the ICSSG PHYs to operate correctly, a 25 MHz reference clock must
be supplied on CLKOUT0. Previously, our bootloader configured this
clock, which is why the PRU Ethernet ports appeared to work, but the
change never made it into the device tree.

Add clock properties to make EXT_REFCLK1.CLKOUT0 output a 25MHz clock.

Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Fixes: 87adfd1ab0 ("arm64: dts: ti: am642-phyboard-electra: Add PRU-ICSSG nodes")
Link: https://lore.kernel.org/r/20250521053339.1751844-1-w.egorov@phytec.de
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
2025-06-21 22:17:28 +05:30

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// SPDX-License-Identifier: GPL-2.0-only OR MIT
/*
* Copyright (C) 2021-2024 PHYTEC America, LLC - https://www.phytec.com
* Author: Matt McKee <mmckee@phytec.com>
*
* Copyright (C) 2022-2024 PHYTEC Messtechnik GmbH
* Author: Wadim Egorov <w.egorov@phytec.de>
*
* Product homepage:
* https://www.phytec.com/product/phyboard-am64x
*/
/dts-v1/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/leds/common.h>
#include <dt-bindings/leds/leds-pca9532.h>
#include <dt-bindings/phy/phy.h>
#include "k3-am642.dtsi"
#include "k3-am64-phycore-som.dtsi"
#include "k3-serdes.h"
/ {
compatible = "phytec,am642-phyboard-electra-rdk",
"phytec,am64-phycore-som", "ti,am642";
model = "PHYTEC phyBOARD-Electra-AM64x RDK";
aliases {
ethernet1 = &icssg0_emac0;
ethernet2 = &icssg0_emac1;
mmc1 = &sdhci1;
serial2 = &main_uart0;
serial3 = &main_uart1;
};
chosen {
stdout-path = &main_uart0;
};
can_tc1: can-phy0 {
compatible = "ti,tcan1042";
pinctrl-names = "default";
pinctrl-0 = <&can_tc1_pins_default>;
#phy-cells = <0>;
max-bitrate = <8000000>;
standby-gpios = <&main_gpio0 32 GPIO_ACTIVE_HIGH>;
};
can_tc2: can-phy1 {
compatible = "ti,tcan1042";
pinctrl-names = "default";
pinctrl-0 = <&can_tc2_pins_default>;
#phy-cells = <0>;
max-bitrate = <8000000>;
standby-gpios = <&main_gpio0 35 GPIO_ACTIVE_HIGH>;
};
/* Dual Ethernet application node on PRU-ICSSG0 */
ethernet {
compatible = "ti,am642-icssg-prueth";
pinctrl-names = "default";
pinctrl-0 = <&icssg0_rgmii1_pins_default>, <&icssg0_rgmii2_pins_default>;
interrupt-parent = <&icssg0_intc>;
interrupts = <24 0 2>, <25 1 3>;
interrupt-names = "tx_ts0", "tx_ts1";
sram = <&oc_sram>;
firmware-name = "ti-pruss/am65x-sr2-pru0-prueth-fw.elf",
"ti-pruss/am65x-sr2-rtu0-prueth-fw.elf",
"ti-pruss/am65x-sr2-txpru0-prueth-fw.elf",
"ti-pruss/am65x-sr2-pru1-prueth-fw.elf",
"ti-pruss/am65x-sr2-rtu1-prueth-fw.elf",
"ti-pruss/am65x-sr2-txpru1-prueth-fw.elf";
dmas = <&main_pktdma 0xc100 15>, /* egress slice 0 */
<&main_pktdma 0xc101 15>, /* egress slice 0 */
<&main_pktdma 0xc102 15>, /* egress slice 0 */
<&main_pktdma 0xc103 15>, /* egress slice 0 */
<&main_pktdma 0xc104 15>, /* egress slice 1 */
<&main_pktdma 0xc105 15>, /* egress slice 1 */
<&main_pktdma 0xc106 15>, /* egress slice 1 */
<&main_pktdma 0xc107 15>, /* egress slice 1 */
<&main_pktdma 0x4100 15>, /* ingress slice 0 */
<&main_pktdma 0x4101 15>; /* ingress slice 1 */
dma-names = "tx0-0", "tx0-1", "tx0-2", "tx0-3",
"tx1-0", "tx1-1", "tx1-2", "tx1-3",
"rx0", "rx1";
ti,prus = <&pru0_0>, <&rtu0_0>, <&tx_pru0_0>, <&pru0_1>, <&rtu0_1>, <&tx_pru0_1>;
ti,pruss-gp-mux-sel = <2>, /* MII mode */
<2>,
<2>,
<2>, /* MII mode */
<2>,
<2>;
ti,mii-g-rt = <&icssg0_mii_g_rt>;
ti,mii-rt = <&icssg0_mii_rt>;
ti,iep = <&icssg0_iep0>, <&icssg0_iep1>;
ethernet-ports {
#address-cells = <1>;
#size-cells = <0>;
icssg0_emac0: port@0 {
reg = <0>;
phy-handle = <&icssg0_phy1>;
phy-mode = "rgmii-id";
/* Filled in by bootloader */
local-mac-address = [00 00 00 00 00 00];
ti,syscon-rgmii-delay = <&main_conf 0x4100>;
};
icssg0_emac1: port@1 {
reg = <1>;
phy-handle = <&icssg0_phy2>;
phy-mode = "rgmii-id";
/* Filled in by bootloader */
local-mac-address = [00 00 00 00 00 00];
ti,syscon-rgmii-delay = <&main_conf 0x4104>;
};
};
};
keys {
compatible = "gpio-keys";
autorepeat;
pinctrl-names = "default";
pinctrl-0 = <&gpio_keys_pins_default>;
key-home {
label = "home";
linux,code = <KEY_HOME>;
gpios = <&main_gpio0 17 GPIO_ACTIVE_HIGH>;
};
key-menu {
label = "menu";
linux,code = <KEY_MENU>;
gpios = <&main_gpio0 21 GPIO_ACTIVE_HIGH>;
};
};
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
pinctrl-0 = <&leds_pins_default>, <&user_leds_pins_default>;
led-1 {
color = <LED_COLOR_ID_RED>;
gpios = <&main_gpio0 15 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "mmc0";
function = LED_FUNCTION_DISK;
};
led-2 {
color = <LED_COLOR_ID_GREEN>;
gpios = <&main_gpio0 16 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "mmc1";
function = LED_FUNCTION_DISK;
};
};
vcc_3v3_mmc: regulator-sd {
/* TPS22963C */
compatible = "regulator-fixed";
regulator-name = "VCC_3V3_MMC";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
regulator-always-on;
bootph-all;
};
};
&main_pmx0 {
can_tc1_pins_default: can-tc1-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x0084, PIN_OUTPUT, 7) /* (P16) GPMC0_ADVn_ALE.GPIO0_32 */
>;
};
can_tc2_pins_default: can-tc2-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x0090, PIN_OUTPUT, 7) /* (P17) GPMC0_BE0n_CLE.GPIO0_35 */
>;
};
clkout0_pins_default: clkout0-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x0274, PIN_OUTPUT, 5) /* (A19) EXT_REFCLK1.CLKOUT0 */
>;
};
gpio_keys_pins_default: gpio-keys-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x0044, PIN_INPUT, 7) /* (T18) GPMC0_AD2.GPIO0_17 */
AM64X_IOPAD(0x0054, PIN_INPUT, 7) /* (V20) GPMC0_AD6.GPIO0_21 */
>;
};
icssg0_mdio_pins_default: icssg0-mdio-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x0200, PIN_INPUT, 0) /* (P2) PRG0_MDIO0_MDIO */
AM64X_IOPAD(0x0204, PIN_OUTPUT, 0) /* (P3) PRG0_MDIO0_MDC */
AM64X_IOPAD(0x01A8, PIN_OUTPUT, 7) /* (V1) PRG0_PRU0_GPO18.GPIO1_18 */
AM64X_IOPAD(0x01AC, PIN_OUTPUT, 7) /* (W1) PRG0_PRU0_GPO19.GPIO1_19 */
>;
};
icssg0_rgmii1_pins_default: icssg0-rgmii1-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x0160, PIN_INPUT, 2) /* (Y1) PRG0_PRU0_GPO0.PRG0_RGMII1_RD0 */
AM64X_IOPAD(0x0164, PIN_INPUT, 2) /* (R4) PRG0_PRU0_GPO1.PRG0_RGMII1_RD1 */
AM64X_IOPAD(0x0168, PIN_INPUT, 2) /* (U2) PRG0_PRU0_GPO2.PRG0_RGMII1_RD2 */
AM64X_IOPAD(0x016c, PIN_INPUT, 2) /* (V2) PRG0_PRU0_GPO3.PRG0_RGMII1_RD3 */
AM64X_IOPAD(0x0170, PIN_INPUT, 2) /* (AA2) PRG0_PRU0_GPO4.PRG0_RGMII1_RX_CTL */
AM64X_IOPAD(0x0178, PIN_INPUT, 2) /* (T3) PRG0_PRU0_GPO6.PRG0_RGMII1_RXC */
AM64X_IOPAD(0x018c, PIN_OUTPUT, 2) /* (Y3) PRG0_PRU0_GPO11.PRG0_RGMII1_TD0 */
AM64X_IOPAD(0x0190, PIN_OUTPUT, 2) /* (AA3) PRG0_PRU0_GPO12.PRG0_RGMII1_TD1 */
AM64X_IOPAD(0x0194, PIN_OUTPUT, 2) /* (R6) PRG0_PRU0_GPO13.PRG0_RGMII1_TD2 */
AM64X_IOPAD(0x0198, PIN_OUTPUT, 2) /* (V4) PRG0_PRU0_GPO14.PRG0_RGMII1_TD3 */
AM64X_IOPAD(0x019c, PIN_OUTPUT, 2) /* (T5) PRG0_PRU0_GPO15.PRG0_RGMII1_TX_CTL */
AM64X_IOPAD(0x01a0, PIN_OUTPUT, 2) /* (U4) PRG0_PRU0_GPO16.PRG0_RGMII1_TXC */
>;
};
icssg0_rgmii2_pins_default: icssg0-rgmii2-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x01b0, PIN_INPUT, 2) /* (Y2) PRG0_PRU1_GPO0.PRG0_RGMII2_RD0 */
AM64X_IOPAD(0x01b4, PIN_INPUT, 2) /* (W2) PRG0_PRU1_GPO1.PRG0_RGMII2_RD1 */
AM64X_IOPAD(0x01b8, PIN_INPUT, 2) /* (V3) PRG0_PRU1_GPO2.PRG0_RGMII2_RD2 */
AM64X_IOPAD(0x01bc, PIN_INPUT, 2) /* (T4) PRG0_PRU1_GPO3.PRG0_RGMII2_RD3 */
AM64X_IOPAD(0x01c0, PIN_INPUT, 2) /* (W3) PRG0_PRU1_GPO4.PRG0_RGMII2_RX_CTL */
AM64X_IOPAD(0x01c8, PIN_INPUT, 2) /* (R5) PRG0_PRU1_GPO6.PRG0_RGMII2_RXC */
AM64X_IOPAD(0x01dc, PIN_OUTPUT, 2) /* (W4) PRG0_PRU1_GPO11.PRG0_RGMII2_TD0 */
AM64X_IOPAD(0x01e0, PIN_OUTPUT, 2) /* (Y4) PRG0_PRU1_GPO12.PRG0_RGMII2_TD1 */
AM64X_IOPAD(0x01e4, PIN_OUTPUT, 2) /* (T6) PRG0_PRU1_GPO13.PRG0_RGMII2_TD2 */
AM64X_IOPAD(0x01e8, PIN_OUTPUT, 2) /* (U6) PRG0_PRU1_GPO14.PRG0_RGMII2_TD3 */
AM64X_IOPAD(0x01ec, PIN_OUTPUT, 2) /* (U5) PRG0_PRU1_GPO15.PRG0_RGMII2_TX_CTL */
AM64X_IOPAD(0x01f0, PIN_OUTPUT, 2) /* (AA4) PRG0_PRU1_GPO16.PRG0_RGMII2_TXC */
>;
};
main_i2c1_pins_default: main-i2c1-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x0268, PIN_INPUT, 0) /* (C18) I2C1_SCL */
AM64X_IOPAD(0x026c, PIN_INPUT, 0) /* (B19) I2C1_SDA */
>;
};
main_mcan0_pins_default: main-mcan0-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x0250, PIN_OUTPUT, 0) /* (A17) MCAN0_TX */
AM64X_IOPAD(0x0254, PIN_INPUT, 0) /* (B17) MCAN0_RX */
>;
};
main_mcan1_pins_default: main-mcan1-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x0258, PIN_OUTPUT, 0) /* (C17) MCAN1_TX */
AM64X_IOPAD(0x025c, PIN_INPUT, 0) /* (D17) MCAN1_RX */
>;
};
main_mmc1_pins_default: main-mmc1-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x027c, PIN_INPUT_PULLUP, 0) /* (K18) MMC1_DAT3 */
AM64X_IOPAD(0x0280, PIN_INPUT_PULLUP, 0) /* (K19) MMC1_DAT2 */
AM64X_IOPAD(0x0284, PIN_INPUT_PULLUP, 0) /* (L21) MMC1_DAT1 */
AM64X_IOPAD(0x0288, PIN_INPUT_PULLUP, 0) /* (K21) MMC1_DAT0 */
AM64X_IOPAD(0x028c, PIN_INPUT_PULLDOWN, 0) /* (L20) MMC1_CLK */
AM64X_IOPAD(0x0290, PIN_INPUT, 0) /* MMC1_CLKLB */
AM64X_IOPAD(0x0294, PIN_INPUT_PULLUP, 0) /* (J19) MMC1_CMD */
AM64X_IOPAD(0x0298, PIN_INPUT_PULLUP, 0) /* (D19) MMC1_SDCD */
>;
bootph-all;
};
main_spi0_pins_default: main-spi0-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x020c, PIN_OUTPUT, 7) /* (C13) SPI0_CS1.GPIO1_43 */
AM64X_IOPAD(0x0210, PIN_INPUT, 0) /* (D13) SPI0_CLK */
AM64X_IOPAD(0x0214, PIN_OUTPUT, 0) /* (A13) SPI0_D0 */
AM64X_IOPAD(0x0218, PIN_INPUT, 0) /* (A14) SPI0_D1 */
>;
};
main_uart0_pins_default: main-uart0-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x0230, PIN_INPUT, 0) /* (D15) UART0_RXD */
AM64X_IOPAD(0x0234, PIN_OUTPUT, 0) /* (C16) UART0_TXD */
>;
bootph-all;
};
main_uart1_pins_default: main-uart1-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x0248, PIN_INPUT, 0) /* (D16) UART1_CTSn */
AM64X_IOPAD(0x024C, PIN_OUTPUT, 0) /* (E16) UART1_RTSn */
AM64X_IOPAD(0x0240, PIN_INPUT, 0) /* (E15) UART1_RXD */
AM64X_IOPAD(0x0244, PIN_OUTPUT, 0) /* (E14) UART1_TXD */
>;
};
main_usb0_pins_default: main-usb0-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x02a8, PIN_OUTPUT, 0) /* (E19) USB0_DRVVBUS */
>;
};
user_leds_pins_default: user-leds-default-pins {
pinctrl-single,pins = <
AM64X_IOPAD(0x003c, PIN_OUTPUT, 7) /* (T20) GPMC0_AD0.GPIO0_15 */
AM64X_IOPAD(0x0040, PIN_OUTPUT, 7) /* (U21) GPMC0_AD1.GPIO0_16 */
>;
};
};
&icssg0_mdio {
pinctrl-names = "default";
pinctrl-0 = <&icssg0_mdio_pins_default &clkout0_pins_default>;
assigned-clocks = <&k3_clks 157 123>;
assigned-clock-parents = <&k3_clks 157 125>;
status = "okay";
icssg0_phy1: ethernet-phy@1 {
compatible = "ethernet-phy-id2000.a231", "ethernet-phy-ieee802.3-c22";
reg = <0x1>;
tx-fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
rx-fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
reset-gpios = <&main_gpio1 18 GPIO_ACTIVE_LOW>;
reset-assert-us = <1000>;
reset-deassert-us = <1000>;
ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
};
icssg0_phy2: ethernet-phy@2 {
compatible = "ethernet-phy-id2000.a231", "ethernet-phy-ieee802.3-c22";
reg = <0x2>;
tx-fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
rx-fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
reset-gpios = <&main_gpio1 19 GPIO_ACTIVE_LOW>;
reset-assert-us = <1000>;
reset-deassert-us = <1000>;
ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
};
};
&i2c_som_rtc {
trickle-resistor-ohms = <3000>;
};
&main_i2c1 {
pinctrl-names = "default";
pinctrl-0 = <&main_i2c1_pins_default>;
clock-frequency = <400000>;
status = "okay";
eeprom@51 {
compatible = "atmel,24c02";
pagesize = <16>;
reg = <0x51>;
};
led-controller@62 {
compatible = "nxp,pca9533";
reg = <0x62>;
led-3 {
label = "red:user";
type = <PCA9532_TYPE_LED>;
};
led-4 {
label = "green:user";
type = <PCA9532_TYPE_LED>;
};
led-5 {
label = "blue:user";
type = <PCA9532_TYPE_LED>;
};
};
};
&main_mcan0 {
pinctrl-names = "default";
pinctrl-0 = <&main_mcan0_pins_default>;
phys = <&can_tc1>;
status = "okay";
};
&main_mcan1 {
pinctrl-names = "default";
pinctrl-0 = <&main_mcan1_pins_default>;
phys = <&can_tc2>;
status = "okay";
};
&main_spi0 {
pinctrl-names = "default";
pinctrl-0 = <&main_spi0_pins_default>;
cs-gpios = <0>, <&main_gpio1 43 GPIO_ACTIVE_LOW>;
ti,pindir-d0-out-d1-in;
status = "okay";
tpm@1 {
compatible = "infineon,slb9670", "tcg,tpm_tis-spi";
reg = <1>;
spi-max-frequency = <10000000>;
};
};
&main_uart0 {
pinctrl-names = "default";
pinctrl-0 = <&main_uart0_pins_default>;
bootph-all;
status = "okay";
};
&main_uart1 {
pinctrl-names = "default";
pinctrl-0 = <&main_uart1_pins_default>;
uart-has-rtscts;
status = "okay";
};
&sdhci1 {
vmmc-supply = <&vcc_3v3_mmc>;
pinctrl-names = "default";
pinctrl-0 = <&main_mmc1_pins_default>;
disable-wp;
no-1-8-v;
bootph-all;
status = "okay";
};
&serdes0 {
serdes0_pcie_usb_link: phy@0 {
reg = <0>;
cdns,num-lanes = <1>;
#phy-cells = <0>;
cdns,phy-type = <PHY_TYPE_USB3>;
resets = <&serdes_wiz0 1>;
};
};
&serdes_ln_ctrl {
idle-states = <AM64_SERDES0_LANE0_USB>;
};
&usbss0 {
ti,vbus-divider;
};
&usb0 {
pinctrl-names = "default";
pinctrl-0 = <&main_usb0_pins_default>;
dr_mode = "host";
maximum-speed = "super-speed";
phys = <&serdes0_pcie_usb_link>;
phy-names = "cdns3,usb3-phy";
};
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