[PATCH v1 5/7] ARM: dts: sunxi: add support for NetCube Systems Nagami SoM

Lukas Schmid
2025-07-05T21:58:59Z

NetCube Systems Nagami SoM is a module based around the Allwinner T113s
SoC. It includes the following features and interfaces:

- 128MB DDR3 included in SoC
- 10/100 Mbps Ethernet using LAN8720A phy
- One USB-OTG interface
- One USB-Host interface
- One I2S interface with in and output support
- Two CAN interfaces
- ESP32 over SDIO
- One SPI interface
- I2C EEPROM for MAC address
- One QWIIC I2C Interface with dedicated interrupt pin shared with EEPROM
- One external I2C interface
- SD interface for external SD-Card

Signed-off-by: Lukas Schmid <lukas.schmid@netcube.li>
---
.../allwinner/sun8i-t113s-netcube-nagami.dtsi | 227 ++++++++++++++++++
1 file changed, 227 insertions(+)
create mode 100644 arch/arm/boot/dts/allwinner/sun8i-t113s-netcube-nagami.dtsi

diff --git a/arch/arm/boot/dts/allwinner/sun8i-t113s-netcube-nagami.dtsi b/arch/arm/boot/dts/allwinner/sun8i-t113s-netcube-nagami.dtsi
new file mode 100644
index 000000000..c5fdc4192
--- /dev/null
+++ b/arch/arm/boot/dts/allwinner/sun8i-t113s-netcube-nagami.dtsi
@@ -0,0 +1,227 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2025 Lukas Schmid <lukas.schmid@netcube.li>
+ */
+
+/dts-v1/;
+#include "sun8i-t113s.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+ model = "NetCube Systems Nagami SoM";
+ compatible = "netcube,nagami", "allwinner,sun8i-t113s";
+
+ aliases {
+ serial1 = &uart1; // ESP32 Bootloader UART
+ serial3 = &uart3; // Console UART on Card Edge
+ ethernet0 = &emac;
+ };
+
+ chosen {
+ stdout-path = "serial3:115200n8";
+ };
+
+ /* module wide 3.3V supply directly from the card edge */
+ reg_vcc3v3: regulator-3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "vcc-3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
+
+ /* SY8008 DC/DC regulator on the board, also supplying VDD-SYS */
+ reg_vcc_core: regulator-core {
+ compatible = "regulator-fixed";
+ regulator-name = "vcc-core";
+ regulator-min-microvolt = <880000>;
+ regulator-max-microvolt = <880000>;
+ vin-supply = <&reg_vcc3v3>;
+ };
+};
+
+&cpu0 {
+ cpu-supply = <&reg_vcc_core>;
+};
+
+&cpu1 {
+ cpu-supply = <&reg_vcc_core>;
+};
+
+&emac {
+ nvmem-cells = <&eth0_macaddress>;
+ nvmem-cell-names = "mac-address";
+ phy-handle = <&lan8720a>;
+ phy-mode = "rmii";
+ pinctrl-0 = <&rmii_pe_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+/* Exposed as I2C on the card edge */
+&i2c2 {
+ pinctrl-0 = <&i2c2_pins>;
+ pinctrl-names = "default";
+};
+
+/* Exposed as the QWIIC connector and used by the internal EEPROM */
+&i2c3 {
+ pinctrl-0 = <&i2c3_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+
+ eeprom0: eeprom@50 {
+ compatible = "atmel,24c02"; /* actually it's a 24AA02E48 */
+ reg = <0x50>;
+ pagesize = <16>;
+ read-only;
+ vcc-supply = <&reg_vcc3v3>;
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ eth0_macaddress: macaddress@fa {
+ reg = <0xfa 0x06>;
+ };
+ };
+};
+
+/* Exposed as I2S on the card edge */
+&i2s1 {
+ pinctrl-0 = <&i2s1_pins>, <&i2s1_din_pins>, <&i2s1_dout_pins>;
+ pinctrl-names = "default";
+};
+
+&mdio {
+ lan8720a: ethernet-phy@1 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <1>;
+ };
+};
+
+/* Exposed as SD on the card edge */
+&mmc0 {
+ pinctrl-0 = <&mmc0_pins>;
+ pinctrl-names = "default";
+ vmmc-supply = <&reg_vcc3v3>;
+ broken-cd;
+ disable-wp;
+ bus-width = <4>;
+};
+
+/* Connected to the on-board ESP32 */
+&mmc1 {
+ pinctrl-0 = <&mmc1_pins>;
+ pinctrl-names = "default";
+ vmmc-supply = <&reg_vcc3v3>;
+ bus-width = <4>;
+ non-removable;
+ status = "okay";
+};
+
+/* Connected to the on-board eMMC */
+&mmc2 {
+ pinctrl-0 = <&mmc2_pins>;
+ pinctrl-names = "default";
+ vmmc-supply = <&reg_vcc3v3>;
+ vqmmc-supply = <&reg_vcc3v3>;
+ bus-width = <4>;
+ non-removable;
+ status = "okay";
+};
+
+&pio {
+ vcc-pb-supply = <&reg_vcc3v3>;
+ vcc-pd-supply = <&reg_vcc3v3>;
+ vcc-pe-supply = <&reg_vcc3v3>;
+ vcc-pf-supply = <&reg_vcc3v3>;
+ vcc-pg-supply = <&reg_vcc3v3>;
+
+ gpio-line-names = "", "", "", "", // PA
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "CAN0_TX", "CAN0_RX", // PB
+ "CAN1_TX", "CAN1_RX", "UART3_TX", "UART3_RX",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "eMMC_CLK", "eMMC_CMD", // PC
+ "eMMC_D2", "eMMC_D1", "eMMC_D0", "eMMC_D3",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "", // PD
+ "", "", "", "",
+ "", "", "SPI1_CS", "SPI1_CLK",
+ "SPI1_MOSI", "SPI1_MISO", "SPI1_HOLD", "SPI1_WP",
+ "PD16", "", "", "",
+ "I2C2_SCL", "I2C2_SDA", "PD22", "",
+ "", "", "", "",
+ "", "", "", "",
+ "ETH_CRSDV", "ETH_RXD0", "ETH_RXD1", "ETH_TXCK", // PE
+ "ETH_TXD0", "ETH_TXD1", "ETH_TXEN", "",
+ "ETH_MDC", "ETH_MDIO", "QWIIC_nINT", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "SD_D1", "SD_D0", "SD_CLK", "SD_CLK", // PF
+ "SD_D3", "SD_D2", "PF6", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "ESP_CLK", "ESP_CMD", "ESP_D0", "ESP_D1", // PG
+ "ESP_D2", "ESP_D3", "UART1_TXD", "UART1_RXD",
+ "ESP_nBOOT", "ESP_nRST", "I2C3_SCL", "I2C3_SDA",
+ "I2S1_WS", "I2S1_CLK", "I2S1_DIN0", "I2S1_DOUT0",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "";
+};
+
+/* Remove the unused CK pin from the pinctl as it is unconnected */
+&rmii_pe_pins {
+ pins = "PE0", "PE1", "PE2", "PE3", "PE4",
+ "PE5", "PE6", "PE8", "PE9";
+};
+
+/* Exposed as SPI on the card-edge */
+&spi1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-0 = <&spi1_pins>;
+ pinctrl-names = "default";
+ cs-gpios = <0>;
+};
+
+/* Connected to the Bootloader/Console of the ESP32 */
+&uart1 {
+ pinctrl-0 = <&uart1_pg6_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+/* Exposed as the Console/Debug UART on the card-edge */
+&uart3 {
+ pinctrl-0 = <&uart3_pb_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+};
--
2.39.5