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arm64: dts: allwinner: t527: Add OrangePi 4A board
The OrangePi 4A is a typical Raspberry Pi model B sized development board from Xunlong designed around an Allwinner T527 SoC. The board has the following features: - Allwinner T527 SoC - AXP717B + AXP323 PMICs - Up to 4GB LPDDR4 DRAM - micro SD slot - optional eMMC module - M.2 slot for PCIe 2.0 x1 - 16 MB SPI-NOR flash - 4x USB 2.0 type-A ports (one can be used in gadget mode) - 1x Gigabit ethernet w/ Motorcomm PHY (through yet to be supported GMAC200) - 3.5mm audio jack via internal audio codec - HDMI 2.0 output - eDP, MIPI CSI (2-lane and 4-lane) and MIPI DSI (4-lane) connectors - USB type-C port purely for power - AP6256 (Broadcom BCM4345) WiFi 5.0 + BT 5.0 - unsoldered headers for ADC and an additional USB 2.0 host port - 40-pin GPIO header Add a device tree for it, enabling all peripherals currently supported. Reviewed-by: Andre Przywara <andre.przywara@arm.com> Link: https://patch.msgid.link/20250628161608.3072968-6-wens@kernel.org Signed-off-by: Chen-Yu Tsai <wens@csie.org>
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‎arch/arm64/boot/dts/allwinner/Makefile‎

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@@ -57,3 +57,4 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h700-anbernic-rg35xx-sp.dtb
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dtb-$(CONFIG_ARCH_SUNXI) += sun55i-a527-cubie-a5e.dtb
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dtb-$(CONFIG_ARCH_SUNXI) += sun55i-h728-x96qpro+.dtb
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dtb-$(CONFIG_ARCH_SUNXI) += sun55i-t527-avaota-a1.dtb
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dtb-$(CONFIG_ARCH_SUNXI) += sun55i-t527-orangepi-4a.dtb

‎arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts‎

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// SPDX-License-Identifier: (GPL-2.0-only OR MIT)
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/*
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* Copyright (C) 2025 Chen-Yu Tsai <wens@csie.org>
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*/
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/dts-v1/;
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#include "sun55i-a523.dtsi"
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/leds/common.h>
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/ {
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model = "OrangePi 4A";
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compatible = "xunlong,orangepi-4a", "allwinner,sun55i-t527";
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aliases {
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serial0 = &uart0;
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};
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chosen {
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stdout-path = "serial0:115200n8";
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};
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ext_osc32k: ext-osc32k-clk {
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#clock-cells = <0>;
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compatible = "fixed-clock";
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clock-frequency = <32768>;
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clock-output-names = "ext_osc32k";
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};
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leds {
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compatible = "gpio-leds";
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/* PWM capable pin, but PWM isn't supported yet. */
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led {
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function = LED_FUNCTION_STATUS;
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color = <LED_COLOR_ID_GREEN>;
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gpios = <&pio 3 20 GPIO_ACTIVE_HIGH>; /* PD20 */
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};
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};
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wifi_pwrseq: pwrseq {
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compatible = "mmc-pwrseq-simple";
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reset-gpios = <&r_pio 1 1 GPIO_ACTIVE_LOW>; /* PM1 */
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clocks = <&rtc CLK_OSC32K_FANOUT>;
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clock-names = "ext_clock";
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};
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reg_otg_vbus: regulator-otg-vbus {
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compatible = "regulator-fixed";
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regulator-name = "otg-vbus";
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regulator-min-microvolt = <5000000>;
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regulator-max-microvolt = <5000000>;
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vin-supply = <&reg_vcc5v>;
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gpio = <&r_pio 0 4 GPIO_ACTIVE_HIGH>; /* PL4 */
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enable-active-high;
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};
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reg_pcie_vcc3v3: regulator-pcie-vcc3v3 {
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compatible = "regulator-fixed";
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regulator-name = "vcc-pcie-3v3";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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vin-supply = <&reg_vcc5v>;
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gpio = <&r_pio 0 8 GPIO_ACTIVE_HIGH>; /* PL8 */
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enable-active-high;
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};
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reg_usb_vbus: regulator-usb-vbus {
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compatible = "regulator-fixed";
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regulator-name = "usb-vbus";
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regulator-min-microvolt = <5000000>;
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regulator-max-microvolt = <5000000>;
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vin-supply = <&reg_vcc5v>;
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gpio = <&r_pio 0 12 GPIO_ACTIVE_HIGH>; /* PL12 */
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enable-active-high;
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};
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reg_vcc5v: regulator-vcc5v {
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/* board wide 5V supply from USB type-C port */
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compatible = "regulator-fixed";
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regulator-name = "vcc-5v";
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regulator-min-microvolt = <5000000>;
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regulator-max-microvolt = <5000000>;
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regulator-always-on;
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};
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};
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&ehci0 {
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status = "okay";
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};
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&ehci1 {
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status = "okay";
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};
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&mmc0 {
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vmmc-supply = <&reg_cldo3>;
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cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; /* PF6 */
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bus-width = <4>;
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status = "okay";
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};
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&mmc1 {
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bus-width = <4>;
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mmc-pwrseq = <&wifi_pwrseq>;
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non-removable;
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vmmc-supply = <&reg_dldo1_323>;
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vqmmc-supply = <&reg_bldo1>;
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status = "okay";
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brcmf: wifi@1 {
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compatible = "brcm,bcm4329-fmac";
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reg = <1>;
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interrupt-parent = <&r_pio>;
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interrupts = <1 0 IRQ_TYPE_LEVEL_LOW>; /* PM0 */
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interrupt-names = "host-wake";
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};
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};
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&mmc2 {
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bus-width = <8>;
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cap-mmc-hw-reset;
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mmc-ddr-1_8v;
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mmc-hs200-1_8v;
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non-removable;
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vmmc-supply = <&reg_cldo3>;
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vqmmc-supply = <&reg_cldo1>;
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status = "okay";
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};
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&ohci0 {
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status = "okay";
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};
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&ohci1 {
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status = "okay";
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};
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&pio {
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vcc-pb-supply = <&reg_cldo3>; /* via VCC-IO */
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vcc-pc-supply = <&reg_cldo1>;
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vcc-pd-supply = <&reg_cldo3>;
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vcc-pe-supply = <&reg_aldo2>;
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vcc-pf-supply = <&reg_cldo3>; /* VCC-IO for 3.3v; VCC-MCSI for 1.8v */
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vcc-pg-supply = <&reg_bldo1>;
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vcc-ph-supply = <&reg_cldo3>; /* via VCC-IO */
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vcc-pi-supply = <&reg_cldo3>;
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vcc-pj-supply = <&reg_cldo1>;
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vcc-pk-supply = <&reg_cldo1>;
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};
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&r_i2c0 {
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status = "okay";
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axp717: pmic@35 {
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compatible = "x-powers,axp717";
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reg = <0x35>;
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interrupt-controller;
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#interrupt-cells = <1>;
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interrupts-extended = <&nmi_intc 0 IRQ_TYPE_LEVEL_LOW>;
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vin1-supply = <&reg_vcc5v>;
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vin2-supply = <&reg_vcc5v>;
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vin3-supply = <&reg_vcc5v>;
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vin4-supply = <&reg_vcc5v>;
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aldoin-supply = <&reg_vcc5v>;
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bldoin-supply = <&reg_vcc5v>;
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cldoin-supply = <&reg_vcc5v>;
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regulators {
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/* Supplies the "little" cluster (1.4 GHz cores) */
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reg_dcdc1: dcdc1 {
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regulator-always-on;
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regulator-min-microvolt = <900000>;
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regulator-max-microvolt = <1160000>;
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regulator-name = "vdd-cpul";
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};
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reg_dcdc2: dcdc2 {
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regulator-always-on;
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regulator-min-microvolt = <920000>;
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regulator-max-microvolt = <920000>;
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regulator-name = "vdd-gpu-sys";
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};
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reg_dcdc3: dcdc3 {
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regulator-always-on;
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regulator-min-microvolt = <1160000>;
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regulator-max-microvolt = <1160000>;
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regulator-name = "vcc-dram";
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};
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reg_dcdc4: dcdc4 {
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/* feeds 3.3V pin on GPIO header */
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regulator-always-on;
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vdd-io";
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};
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aldo1 {
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/* not actually connected */
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regulator-name = "avdd-csi";
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};
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reg_aldo2: aldo2 {
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-name = "vcc-pe";
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};
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reg_aldo3: aldo3 {
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/* supplies the I2C pins for this PMIC */
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regulator-always-on;
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vcc-pl-usb";
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};
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reg_aldo4: aldo4 {
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regulator-always-on;
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-name = "vcc-pll-dxco-avcc";
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};
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reg_bldo1: bldo1 {
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-name = "vcc-pg-wifi";
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};
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reg_bldo2: bldo2 {
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regulator-always-on;
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-name = "vcc-pm-lpddr";
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};
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bldo3 {
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/* not actually connected */
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regulator-name = "afvcc-csi";
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};
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bldo4 {
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/* not actually connected */
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regulator-name = "dvdd-csi";
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};
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reg_cldo1: cldo1 {
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regulator-always-on;
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-name = "vcc-cvp-pc-lvds-mcsi-pk-efuse-pcie-edp-1v8";
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};
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reg_cldo2: cldo2 {
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vcc3v3-csi";
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};
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reg_cldo3: cldo3 {
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regulator-always-on;
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vcc-io-mmc-nand-pd-pi-usb";
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};
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reg_cldo4: cldo4 {
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vcc-3v3-phy1-lcd";
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};
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reg_cpusldo: cpusldo {
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/* supplies the management core */
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regulator-always-on;
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regulator-min-microvolt = <900000>;
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regulator-max-microvolt = <900000>;
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regulator-name = "vdd-cpus-usb-0v9";
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};
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};
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};
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axp323: pmic@36 {
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compatible = "x-powers,axp323";
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reg = <0x36>;
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#interrupt-cells = <1>;
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interrupt-controller;
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status = "okay";
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vin1-supply = <&reg_vcc5v>;
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vin2-supply = <&reg_vcc5v>;
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vin3-supply = <&reg_vcc5v>;
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regulators {
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reg_aldo1_323: aldo1 {
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/* less capable and shares load with dldo1 */
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vcc-wifi";
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};
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reg_dldo1_323: dldo1 {
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/* more capable and shares load with aldo1 */
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vcc-wifi2";
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};
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/* Supplies the "big" cluster (1.8 GHz cores) */
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reg_dcdc1_323: dcdc1 {
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regulator-always-on;
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regulator-min-microvolt = <900000>;
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regulator-max-microvolt = <1150000>;
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regulator-name = "vdd-cpub";
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};
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/* DCDC2 is polyphased with DCDC1 */
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/* Some RISC-V management core related voltage */
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reg_dcdc3_323: dcdc3 {
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regulator-always-on;
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regulator-min-microvolt = <900000>;
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regulator-max-microvolt = <900000>;
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regulator-name = "vdd-dnr";
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};
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};
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};
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};
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&r_pio {
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/*
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* Specifying the supply would create a circular dependency.
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*
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* vcc-pl-supply = <&reg_aldo3>;
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*/
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vcc-pm-supply = <&reg_bldo2>;
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};
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&uart0 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart0_pb_pins>;
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status = "okay";
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};
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&uart1 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
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uart-has-rtscts;
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status = "okay";
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bluetooth {
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compatible = "brcm,bcm4345c5";
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clocks = <&rtc CLK_OSC32K_FANOUT>;
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clock-names = "lpo";
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vbat-supply = <&reg_aldo1_323>;
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vddio-supply = <&reg_bldo1>;
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device-wakeup-gpios = <&r_pio 1 3 GPIO_ACTIVE_HIGH>; /* PM3 */
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host-wakeup-gpios = <&r_pio 1 4 GPIO_ACTIVE_HIGH>; /* PM4 */
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shutdown-gpios = <&r_pio 1 2 GPIO_ACTIVE_HIGH>; /* PM2 */
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};
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};
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&usb_otg {
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/*
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* The OTG controller is connected to one of the type-A ports.
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* There is a regulator, controlled by a GPIO, to provide VBUS power
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* to the port, and a VBUSDET GPIO, to detect externally provided
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* power. But without ID or CC pins there is no real way to do a
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* runtime role detection.
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*/
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dr_mode = "host";
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status = "okay";
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};
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&usbphy {
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usb0_vbus-supply = <&reg_otg_vbus>;
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usb0_vbus_det-gpios = <&r_pio 0 7 GPIO_ACTIVE_HIGH>; /* PL7 */
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usb1_vbus-supply = <&reg_usb_vbus>;
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status = "okay";
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};

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