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difos/target/linux/mediatek/dts/mt7981b-gatonetworks-gdsp.dts
Enrico Mioso 072ae5a76b mediatek: filogic: add SD card support to GatoNetworks GDSP 
The device is equipped with a GPS module, reporting data via /dev/ttyS1.
A TF card reader is also present. Only one of those components can be
used at once, since they share some PINs.
This commit adds two devicetree overlays to allow for the user to select
the desired configuration. Another overlay configuration to allow booting
from SD card is provided.

Signed-off-by: Enrico Mioso <mrkiko.rs@gmail.com>
2025-07-18 12:36:39 +01:00

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// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
/dts-v1/;
#include "mt7981b.dtsi"
/ {
model = "GatoNetworks GDSP";
compatible = "gatonetworks,gdsp", "mediatek,mt7981";
aliases {
serial0 = &uart0;
label-mac-device = &wifi_band_0;
led-boot = &sg1;
led-failsafe = &sg1;
led-running = &sg1;
led-upgrade = &sg1;
};
chosen {
stdout-path = "serial0:115200n8";
bootargs = "console=ttyS0,115200n1 earlycon=uart8250,mmio32,0x11002000";
rootdisk = <&firmware>;
};
memory {
reg = <0 0x40000000 0 0x10000000>;
};
reg_3p3v: regulator-3p3v {
compatible = "regulator-fixed";
regulator-name = "fixed-3.3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
regulator-always-on;
};
reg_5v: regulator-5v {
compatible = "regulator-fixed";
regulator-name = "fixed-5V";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
regulator-boot-on;
regulator-always-on;
};
gpio-keys {
compatible = "gpio-keys";
reset {
label = "reset";
linux,code = <KEY_RESTART>;
gpios = <&pio 1 GPIO_ACTIVE_LOW>;
};
};
gpio-export {
compatible = "gpio-export";
modem1 {
gpio-export,name = "modem1";
gpio-export,output = <0>;
gpios = <&pio 2 GPIO_ACTIVE_LOW>;
};
modem2 {
gpio-export,name = "modem2";
gpio-export,output = <0>;
gpios = <&pio 14 GPIO_ACTIVE_LOW>;
};
};
leds {
compatible = "gpio-leds";
sim1 {
label = "green:sim1";
gpios = <&pio 13 GPIO_ACTIVE_LOW>;
};
sim2 {
label = "green:sim2";
gpios = <&pio 0 GPIO_ACTIVE_LOW>;
};
sg1: sg1 {
label = "green:sg1";
gpios = <&pio 10 GPIO_ACTIVE_LOW>;
};
sg2 {
label = "green:sg2";
gpios = <&pio 11 GPIO_ACTIVE_LOW>;
};
sg3 {
label = "green:sg3";
gpios = <&pio 12 GPIO_ACTIVE_LOW>;
};
sg4 {
label = "green:sg4";
gpios = <&pio 7 GPIO_ACTIVE_LOW>;
};
sg5 {
label = "green:sg5";
gpios = <&pio 8 GPIO_ACTIVE_LOW>;
};
sg6 {
label = "green:sg6";
gpios = <&pio 9 GPIO_ACTIVE_LOW>;
};
};
gpio-watchdog {
compatible = "linux,wdt-gpio";
gpios = <&pio 6 GPIO_ACTIVE_LOW>;
hw_algo = "toggle";
hw_margin_ms = <25000>;
always-running;
};
};
&watchdog {
status = "okay";
};
&mmc0 {
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default", "state_uhs";
pinctrl-0 = <&mmc0_pins_default>;
pinctrl-1 = <&mmc0_pins_uhs>;
bus-width = <4>;
max-frequency = <50000000>;
cap-sd-highspeed;
vmmc-supply = <&reg_3p3v>;
vqmmc-supply = <&reg_3p3v>;
no-mmc;
no-sdio;
};
&eth {
status = "okay";
gmac0: mac@0 {
compatible = "mediatek,eth-mac";
reg = <0>;
phy-mode = "2500base-x";
nvmem-cells = <&macaddr_lan>;
nvmem-cell-names = "mac-address";
fixed-link {
speed = <2500>;
full-duplex;
pause;
};
};
mdio: mdio-bus {
#address-cells = <1>;
#size-cells = <0>;
switch@1f {
compatible = "mediatek,mt7531";
reg = <31>;
reset-gpios = <&pio 39 0>;
interrupt-controller;
#interrupt-cells = <1>;
interrupt-parent = <&pio>;
interrupts = <38 IRQ_TYPE_LEVEL_HIGH>;
mdio {
#address-cells = <1>;
#size-cells = <0>;
swphy0: phy@0 {
reg = <0>;
};
swphy1: phy@1 {
reg = <1>;
};
swphy2: phy@2 {
reg = <2>;
};
swphy3: phy@3 {
reg = <3>;
};
swphy4: phy@4 {
reg = <4>;
};
};
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
label = "lan1";
phy-handle = <&swphy0>;
};
port@1 {
reg = <1>;
label = "lan2";
phy-handle = <&swphy1>;
};
port@2 {
reg = <2>;
label = "lan3";
phy-handle = <&swphy2>;
};
port@3 {
reg = <3>;
label = "lan4";
phy-handle = <&swphy3>;
};
port@4 {
reg = <4>;
label = "wan";
nvmem-cells = <&macaddr_wan>;
nvmem-cell-names = "mac-address";
phy-handle = <&swphy4>;
};
port@6 {
reg = <6>;
ethernet = <&gmac0>;
phy-mode = "2500base-x";
fixed-link {
speed = <2500>;
full-duplex;
pause;
};
};
};
};
};
};
&crypto {
status = "okay";
};
&wifi {
#address-cells = <1>;
#size-cells = <0>;
mediatek,mtd-eeprom = <&factory 0x0>;
status = "okay";
wifi_band_0: band@0 {
reg = <0>;
nvmem-cells = <&macaddr_wifi 0>;
nvmem-cell-names = "mac-address";
};
band@1 {
reg = <1>;
nvmem-cells = <&macaddr_wifi 1>;
nvmem-cell-names = "mac-address";
};
};
&spi2 {
pinctrl-names = "default";
pinctrl-0 = <&spi2_flash_pins>;
status = "okay";
flash@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <52000000>;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "BL2";
reg = <0x00000 0x0040000>;
read-only;
};
partition@40000 {
label = "u-boot-env";
reg = <0x40000 0x0010000>;
};
factory: partition@50000 {
label = "Factory";
reg = <0x50000 0x00B0000>;
read-only;
nvmem-layout {
compatible = "fixed-layout";
#address-cells = <1>;
#size-cells = <1>;
macaddr_wifi: macaddr@4 {
reg = <0x4 0x6>;
compatible = "mac-base";
#nvmem-cell-cells = <1>;
};
macaddr_wan: macaddr@24 {
reg = <0x24 0x6>;
};
macaddr_lan: macaddr@2a {
reg = <0x2a 0x6>;
};
};
};
partition@100000 {
label = "FIP";
reg = <0x100000 0x0080000>;
read-only;
};
firmware: partition@180000 {
label = "firmware";
reg = <0x180000 0x1E80000>;
};
};
};
};
&pio {
uart1_pins: uart1-pins {
mux {
function = "uart";
groups = "uart1_0";
};
};
mmc0_pins_default: mmc0-pins-default {
mux {
function = "flash";
groups = "emmc_45";
};
conf-cmd-dat {
pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO",
"SPI0_CS", "SPI0_HOLD", "SPI0_WP",
"SPI1_CLK", "SPI1_MOSI", "SPI1_MISO";
input-enable;
drive-strength = <MTK_DRIVE_4mA>;
bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
};
conf-clk {
pins = "SPI1_CS";
drive-strength = <MTK_DRIVE_8mA>;
bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
};
conf-rst {
pins = "PWM0";
drive-strength = <MTK_DRIVE_4mA>;
bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
};
};
mmc0_pins_uhs: mmc0-pins-uhs {
mux {
function = "flash";
groups = "emmc_45";
};
conf-cmd-dat {
pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO",
"SPI0_CS", "SPI0_HOLD", "SPI0_WP",
"SPI1_CLK", "SPI1_MOSI", "SPI1_MISO";
input-enable;
drive-strength = <MTK_DRIVE_4mA>;
bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
};
conf-clk {
pins = "SPI1_CS";
drive-strength = <MTK_DRIVE_8mA>;
bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
};
conf-rst {
pins = "PWM0";
drive-strength = <MTK_DRIVE_4mA>;
bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
};
};
uart2_pins: uart2-pins {
mux {
function = "uart";
groups = "uart2_0_tx_rx";
};
};
spi2_flash_pins: spi2-pins {
mux {
function = "spi";
groups = "spi2", "spi2_wp_hold";
};
conf-pu {
pins = "SPI2_CS", "SPI2_HOLD", "SPI2_WP";
drive-strength = <MTK_DRIVE_8mA>;
bias-pull-up = <MTK_PUPD_SET_R1R0_11>;
};
conf-pd {
pins = "SPI2_CLK", "SPI2_MOSI", "SPI2_MISO";
drive-strength = <MTK_DRIVE_8mA>;
bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
};
};
};
&uart0 {
status = "okay";
};
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&uart1_pins>;
status = "disabled";
};
&uart2 {
pinctrl-names = "default";
pinctrl-0 = <&uart2_pins>;
status = "okay";
};
&usb_phy {
status = "okay";
};
&xhci {
mediatek,u3p-dis-msk = <0x0>;
phys = <&u2port0 PHY_TYPE_USB2>,
<&u3port0 PHY_TYPE_USB3>;
status = "okay";
vusb33-supply = <&reg_3p3v>;
vbus-supply = <&reg_5v>;
};
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