[PATCH v2 0/5] arm64: allwinner: t527: Add OrangePi 4A board

[PATCH v2 0/5] arm64: allwinner: t527: Add OrangePi 4A board

[Chen-Yu Tsai]

From: Chen-Yu Tsai <wens@csie.org>

Hi everyone,

This is v2 of my OrangePi 4A series. Changes since v1:
- Fixed regulator names for bldo3 and bldo4
- Dropped labels for aldo1, bldo3, and bldo4, which are not really used
- Added voltage constraints to aldo2, based on specifications from
  schematic
- Appended "-usb-0v9" to cpusldo's regulator name
- Added comments to explain how axp323 aldo1 and dldo1 are tied together

This series adds support for the OrangePi 4A board. This is a Raspberry
Pi model B form factor development board based on the 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

Patch 1 adds a new entry to the list of board compatibles.

Patch 2 and 3 are minor cleanups.

Patch 4 adds pins for UART1, which is used for BT on the board.

Patch 5 adds a dts file for the new board.


Please take a look. I will take all the patches through the sunxi tree.


Thanks
ChenYu


Chen-Yu Tsai (5):
  dt-bindings: arm: sunxi: Add Xunlong OrangePi 4A board
  arm64: dts: allwinner: a523: Move mmc nodes to correct position
  arm64: dts: allwinner: a523: Move rgmii0 pins to correct location
  arm64: dts: allwinner: a523: Add UART1 pins
  arm64: dts: allwinner: t527: Add OrangePi 4A board

 .../devicetree/bindings/arm/sunxi.yaml        |   5 +
 arch/arm64/boot/dts/allwinner/Makefile        |   1 +
 .../arm64/boot/dts/allwinner/sun55i-a523.dtsi | 160 ++++----
 .../dts/allwinner/sun55i-t527-orangepi-4a.dts | 383 ++++++++++++++++++
 4 files changed, 476 insertions(+), 73 deletions(-)
 create mode 100644 arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts

-- 
2.39.5

[PATCH v2 1/5] dt-bindings: arm: sunxi: Add Xunlong OrangePi 4A board

[Chen-Yu Tsai]

From: Chen-Yu Tsai <wens@csie.org>

The OrangePi 4A is a typical Raspberry Pi model B sized development
board from Xunlong designed around an Allwinner T527 SoC.

Add its compatible name to the list of valid ones.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
 Documentation/devicetree/bindings/arm/sunxi.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/sunxi.yaml b/Documentation/devicetree/bindings/arm/sunxi.yaml
index 7807ea613258..c41d0a0b89e6 100644
--- a/Documentation/devicetree/bindings/arm/sunxi.yaml
+++ b/Documentation/devicetree/bindings/arm/sunxi.yaml
@@ -996,6 +996,11 @@ properties:
           - const: xunlong,orangepi-3
           - const: allwinner,sun50i-h6
 
+      - description: Xunlong OrangePi 4A
+        items:
+          - const: xunlong,orangepi-4a
+          - const: allwinner,sun55i-t527
+
       - description: Xunlong OrangePi Lite
         items:
           - const: xunlong,orangepi-lite
-- 
2.39.5

[PATCH v2 2/5] arm64: dts: allwinner: a523: Move mmc nodes to correct position

[Chen-Yu Tsai]

From: Chen-Yu Tsai <wens@csie.org>

When the mmc nodes were added to the dtsi file, they were inserted in
the incorrect position.

Move them to the correct place.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
 .../arm64/boot/dts/allwinner/sun55i-a523.dtsi | 126 +++++++++---------
 1 file changed, 63 insertions(+), 63 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
index 8b7cbc2e78f5..458d7ecedacd 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
@@ -181,69 +181,6 @@ ccu: clock-controller@2001000 {
 			#reset-cells = <1>;
 		};
 
-		mmc0: mmc@4020000 {
-			compatible = "allwinner,sun55i-a523-mmc",
-				     "allwinner,sun20i-d1-mmc";
-			reg = <0x04020000 0x1000>;
-			clocks = <&ccu CLK_BUS_MMC0>, <&ccu CLK_MMC0>;
-			clock-names = "ahb", "mmc";
-			resets = <&ccu RST_BUS_MMC0>;
-			reset-names = "ahb";
-			interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
-			pinctrl-names = "default";
-			pinctrl-0 = <&mmc0_pins>;
-			status = "disabled";
-
-			max-frequency = <150000000>;
-			cap-sd-highspeed;
-			cap-mmc-highspeed;
-			cap-sdio-irq;
-			#address-cells = <1>;
-			#size-cells = <0>;
-		};
-
-		mmc1: mmc@4021000 {
-			compatible = "allwinner,sun55i-a523-mmc",
-				     "allwinner,sun20i-d1-mmc";
-			reg = <0x04021000 0x1000>;
-			clocks = <&ccu CLK_BUS_MMC1>, <&ccu CLK_MMC1>;
-			clock-names = "ahb", "mmc";
-			resets = <&ccu RST_BUS_MMC1>;
-			reset-names = "ahb";
-			interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
-			pinctrl-names = "default";
-			pinctrl-0 = <&mmc1_pins>;
-			status = "disabled";
-
-			max-frequency = <150000000>;
-			cap-sd-highspeed;
-			cap-mmc-highspeed;
-			cap-sdio-irq;
-			#address-cells = <1>;
-			#size-cells = <0>;
-		};
-
-		mmc2: mmc@4022000 {
-			compatible = "allwinner,sun55i-a523-mmc",
-				     "allwinner,sun20i-d1-mmc";
-			reg = <0x04022000 0x1000>;
-			clocks = <&ccu CLK_BUS_MMC2>, <&ccu CLK_MMC2>;
-			clock-names = "ahb", "mmc";
-			resets = <&ccu RST_BUS_MMC2>;
-			reset-names = "ahb";
-			interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>;
-			pinctrl-names = "default";
-			pinctrl-0 = <&mmc2_pins>;
-			status = "disabled";
-
-			max-frequency = <150000000>;
-			cap-sd-highspeed;
-			cap-mmc-highspeed;
-			cap-sdio-irq;
-			#address-cells = <1>;
-			#size-cells = <0>;
-		};
-
 		wdt: watchdog@2050000 {
 			compatible = "allwinner,sun55i-a523-wdt";
 			reg = <0x2050000 0x20>;
@@ -449,6 +386,69 @@ its: msi-controller@3440000 {
 			};
 		};
 
+		mmc0: mmc@4020000 {
+			compatible = "allwinner,sun55i-a523-mmc",
+				     "allwinner,sun20i-d1-mmc";
+			reg = <0x04020000 0x1000>;
+			clocks = <&ccu CLK_BUS_MMC0>, <&ccu CLK_MMC0>;
+			clock-names = "ahb", "mmc";
+			resets = <&ccu RST_BUS_MMC0>;
+			reset-names = "ahb";
+			interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&mmc0_pins>;
+			status = "disabled";
+
+			max-frequency = <150000000>;
+			cap-sd-highspeed;
+			cap-mmc-highspeed;
+			cap-sdio-irq;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
+		mmc1: mmc@4021000 {
+			compatible = "allwinner,sun55i-a523-mmc",
+				     "allwinner,sun20i-d1-mmc";
+			reg = <0x04021000 0x1000>;
+			clocks = <&ccu CLK_BUS_MMC1>, <&ccu CLK_MMC1>;
+			clock-names = "ahb", "mmc";
+			resets = <&ccu RST_BUS_MMC1>;
+			reset-names = "ahb";
+			interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&mmc1_pins>;
+			status = "disabled";
+
+			max-frequency = <150000000>;
+			cap-sd-highspeed;
+			cap-mmc-highspeed;
+			cap-sdio-irq;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
+		mmc2: mmc@4022000 {
+			compatible = "allwinner,sun55i-a523-mmc",
+				     "allwinner,sun20i-d1-mmc";
+			reg = <0x04022000 0x1000>;
+			clocks = <&ccu CLK_BUS_MMC2>, <&ccu CLK_MMC2>;
+			clock-names = "ahb", "mmc";
+			resets = <&ccu RST_BUS_MMC2>;
+			reset-names = "ahb";
+			interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&mmc2_pins>;
+			status = "disabled";
+
+			max-frequency = <150000000>;
+			cap-sd-highspeed;
+			cap-mmc-highspeed;
+			cap-sdio-irq;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
 		usb_otg: usb@4100000 {
 			compatible = "allwinner,sun55i-a523-musb",
 				     "allwinner,sun8i-a33-musb";
-- 
2.39.5

[PATCH v2 3/5] arm64: dts: allwinner: a523: Move rgmii0 pins to correct location

[Chen-Yu Tsai]

From: Chen-Yu Tsai <wens@csie.org>

Nodes are supposed to be sorted by address, or if no addresses
apply, by node name. The rgmii0 pins are out of order, possibly
due to multiple patches adding pin mux settings conflicting.

Move the rgmii0 pins to the correct location.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
 .../arm64/boot/dts/allwinner/sun55i-a523.dtsi | 20 +++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
index 458d7ecedacd..30613a0b1124 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
@@ -126,16 +126,6 @@ pio: pinctrl@2000000 {
 			interrupt-controller;
 			#interrupt-cells = <3>;
 
-			rgmii0_pins: rgmii0-pins {
-				pins = "PH0", "PH1", "PH2", "PH3", "PH4",
-				       "PH5", "PH6", "PH7", "PH9", "PH10",
-				       "PH14", "PH15", "PH16", "PH17", "PH18";
-				allwinner,pinmux = <5>;
-				function = "emac0";
-				drive-strength = <40>;
-				bias-disable;
-			};
-
 			mmc0_pins: mmc0-pins {
 				pins = "PF0" ,"PF1", "PF2", "PF3", "PF4", "PF5";
 				allwinner,pinmux = <2>;
@@ -163,6 +153,16 @@ mmc2_pins: mmc2-pins {
 				bias-pull-up;
 			};
 
+			rgmii0_pins: rgmii0-pins {
+				pins = "PH0", "PH1", "PH2", "PH3", "PH4",
+				       "PH5", "PH6", "PH7", "PH9", "PH10",
+				       "PH14", "PH15", "PH16", "PH17", "PH18";
+				allwinner,pinmux = <5>;
+				function = "emac0";
+				drive-strength = <40>;
+				bias-disable;
+			};
+
 			uart0_pb_pins: uart0-pb-pins {
 				pins = "PB9", "PB10";
 				allwinner,pinmux = <2>;
-- 
2.39.5

[PATCH v2 4/5] arm64: dts: allwinner: a523: Add UART1 pins

[Chen-Yu Tsai]

From: Chen-Yu Tsai <wens@csie.org>

UART1 is normally used to connect to the Bluetooth side of a Broadcom
WiFi+BT combo chip. The connection uses 4 pins.

Add pinmux nodes for UART1, one for the RX/TX pins, and one for the
RTS/CTS pins.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
 arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
index 30613a0b1124..6f62201fd739 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
@@ -168,6 +168,20 @@ uart0_pb_pins: uart0-pb-pins {
 				allwinner,pinmux = <2>;
 				function = "uart0";
 			};
+
+			/omit-if-no-ref/
+			uart1_pins: uart1-pins {
+				pins = "PG6", "PG7";
+				function = "uart1";
+				allwinner,pinmux = <2>;
+			};
+
+			/omit-if-no-ref/
+			uart1_rts_cts_pins: uart1-rts-cts-pins {
+				pins = "PG8", "PG9";
+				function = "uart1";
+				allwinner,pinmux = <2>;
+			};
 		};
 
 		ccu: clock-controller@2001000 {
-- 
2.39.5

[PATCH v2 5/5] arm64: dts: allwinner: t527: Add OrangePi 4A board

[Chen-Yu Tsai]

From: Chen-Yu Tsai <wens@csie.org>

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.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
Changes since v1:
- Fixed regulator names for bldo3 and bldo4
- Dropped labels for aldo1, bldo3, and bldo4, which are not really used
- Added voltage constraints to aldo2, based on specifications from
  schematic
- Appended "-usb-0v9" to cpusldo's regulator name
- Added comments to explain how axp323 aldo1 and dldo1 are tied together

 arch/arm64/boot/dts/allwinner/Makefile        |   1 +
 .../dts/allwinner/sun55i-t527-orangepi-4a.dts | 383 ++++++++++++++++++
 2 files changed, 384 insertions(+)
 create mode 100644 arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts

diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
index 773cc02a13d0..780aeba0f3a4 100644
--- a/arch/arm64/boot/dts/allwinner/Makefile
+++ b/arch/arm64/boot/dts/allwinner/Makefile
@@ -57,3 +57,4 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h700-anbernic-rg35xx-sp.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun55i-a527-cubie-a5e.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun55i-h728-x96qpro+.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun55i-t527-avaota-a1.dtb
+dtb-$(CONFIG_ARCH_SUNXI) += sun55i-t527-orangepi-4a.dtb
diff --git a/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts b/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
new file mode 100644
index 000000000000..ff2fd8e71e03
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
@@ -0,0 +1,383 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR MIT)
+/*
+ * Copyright (C) 2025 Chen-Yu Tsai <wens@csie.org>
+ */
+
+/dts-v1/;
+
+#include "sun55i-a523.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+	model = "OrangePi 4A";
+	compatible = "xunlong,orangepi-4a", "allwinner,sun55i-t527";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	ext_osc32k: ext-osc32k-clk {
+		#clock-cells = <0>;
+		compatible = "fixed-clock";
+		clock-frequency = <32768>;
+		clock-output-names = "ext_osc32k";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		/* PWM capable pin, but PWM isn't supported yet. */
+		led {
+			function = LED_FUNCTION_STATUS;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&pio 3 20 GPIO_ACTIVE_HIGH>; /* PD20 */
+		};
+	};
+
+	wifi_pwrseq: pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&r_pio 1 1 GPIO_ACTIVE_LOW>; /* PM1 */
+		clocks = <&rtc CLK_OSC32K_FANOUT>;
+		clock-names = "ext_clock";
+	};
+
+	reg_otg_vbus: regulator-otg-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "otg-vbus";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&reg_vcc5v>;
+		gpio = <&r_pio 0 4 GPIO_ACTIVE_HIGH>;	/* PL4 */
+		enable-active-high;
+	};
+
+	reg_pcie_vcc3v3: regulator-pcie-vcc3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc-pcie-3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&reg_vcc5v>;
+		gpio = <&r_pio 0 8 GPIO_ACTIVE_HIGH>;	/* PL8 */
+		enable-active-high;
+	};
+
+	reg_usb_vbus: regulator-usb-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "usb-vbus";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&reg_vcc5v>;
+		gpio = <&r_pio 0 12 GPIO_ACTIVE_HIGH>;	/* PL12 */
+		enable-active-high;
+	};
+
+	reg_vcc5v: regulator-vcc5v {
+		/* board wide 5V supply from USB type-C port */
+		compatible = "regulator-fixed";
+		regulator-name = "vcc-5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+	};
+};
+
+&ehci0 {
+	status = "okay";
+};
+
+&ehci1 {
+	status = "okay";
+};
+
+&mmc0 {
+	vmmc-supply = <&reg_cldo3>;
+	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; /* PF6 */
+	bus-width = <4>;
+	status = "okay";
+};
+
+&mmc1 {
+	bus-width = <4>;
+	mmc-pwrseq = <&wifi_pwrseq>;
+	non-removable;
+	vmmc-supply = <&reg_dldo1_323>;
+	vqmmc-supply = <&reg_bldo1>;
+	status = "okay";
+
+	brcmf: wifi@1 {
+		compatible = "brcm,bcm4329-fmac";
+		reg = <1>;
+		interrupt-parent = <&r_pio>;
+		interrupts = <1 0 IRQ_TYPE_LEVEL_LOW>; /* PM0 */
+		interrupt-names = "host-wake";
+	};
+};
+
+&mmc2 {
+	bus-width = <8>;
+	cap-mmc-hw-reset;
+	mmc-ddr-1_8v;
+	mmc-hs200-1_8v;
+	non-removable;
+	vmmc-supply = <&reg_cldo3>;
+	vqmmc-supply = <&reg_cldo1>;
+	status = "okay";
+};
+
+&ohci0 {
+	status = "okay";
+};
+
+&ohci1 {
+	status = "okay";
+};
+
+&pio {
+	vcc-pb-supply = <&reg_cldo3>;	/* via VCC-IO */
+	vcc-pc-supply = <&reg_cldo1>;
+	vcc-pd-supply = <&reg_cldo3>;
+	vcc-pe-supply = <&reg_aldo2>;
+	vcc-pf-supply = <&reg_cldo3>;	/* VCC-IO for 3.3v; VCC-MCSI for 1.8v */
+	vcc-pg-supply = <&reg_bldo1>;
+	vcc-ph-supply = <&reg_cldo3>;	/* via VCC-IO */
+	vcc-pi-supply = <&reg_cldo3>;
+	vcc-pj-supply = <&reg_cldo1>;
+	vcc-pk-supply = <&reg_cldo1>;
+};
+
+&r_i2c0 {
+	status = "okay";
+
+	axp717: pmic@35 {
+		compatible = "x-powers,axp717";
+		reg = <0x35>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		interrupts-extended = <&nmi_intc 0 IRQ_TYPE_LEVEL_LOW>;
+
+		vin1-supply = <&reg_vcc5v>;
+		vin2-supply = <&reg_vcc5v>;
+		vin3-supply = <&reg_vcc5v>;
+		vin4-supply = <&reg_vcc5v>;
+		aldoin-supply = <&reg_vcc5v>;
+		bldoin-supply = <&reg_vcc5v>;
+		cldoin-supply = <&reg_vcc5v>;
+
+		regulators {
+			/* Supplies the "little" cluster (1.4 GHz cores) */
+			reg_dcdc1: dcdc1 {
+				regulator-always-on;
+				regulator-min-microvolt = <900000>;
+				regulator-max-microvolt = <1160000>;
+				regulator-name = "vdd-cpul";
+			};
+
+			reg_dcdc2: dcdc2 {
+				regulator-always-on;
+				regulator-min-microvolt = <920000>;
+				regulator-max-microvolt = <920000>;
+				regulator-name = "vdd-gpu-sys";
+			};
+
+			reg_dcdc3: dcdc3 {
+				regulator-always-on;
+				regulator-min-microvolt = <1160000>;
+				regulator-max-microvolt = <1160000>;
+				regulator-name = "vcc-dram";
+			};
+
+			reg_dcdc4: dcdc4 {
+				/* feeds 3.3V pin on GPIO header */
+				regulator-always-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vdd-io";
+			};
+
+			aldo1 {
+				/* not actually connected */
+				regulator-name = "avdd-csi";
+			};
+
+			reg_aldo2: aldo2 {
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-name = "vcc-pe";
+			};
+
+			reg_aldo3: aldo3 {
+				/* supplies the I2C pins for this PMIC */
+				regulator-always-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vcc-pl-usb";
+			};
+
+			reg_aldo4: aldo4 {
+				regulator-always-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-name = "vcc-pll-dxco-avcc";
+			};
+
+			reg_bldo1: bldo1 {
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-name = "vcc-pg-wifi";
+			};
+
+			reg_bldo2: bldo2 {
+				regulator-always-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-name = "vcc-pm-lpddr";
+			};
+
+			bldo3 {
+				/* not actually connected */
+				regulator-name = "afvcc-csi";
+			};
+
+			bldo4 {
+				/* not actually connected */
+				regulator-name = "dvdd-csi";
+			};
+
+			reg_cldo1: cldo1 {
+				regulator-always-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-name = "vcc-cvp-pc-lvds-mcsi-pk-efuse-pcie-edp-1v8";
+			};
+
+			reg_cldo2: cldo2 {
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vcc3v3-csi";
+			};
+
+			reg_cldo3: cldo3 {
+				regulator-always-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vcc-io-mmc-nand-pd-pi-usb";
+			};
+
+			reg_cldo4: cldo4 {
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vcc-3v3-phy1-lcd";
+			};
+
+			reg_cpusldo: cpusldo {
+				/* supplies the management core */
+				regulator-always-on;
+				regulator-min-microvolt = <900000>;
+				regulator-max-microvolt = <900000>;
+				regulator-name = "vdd-cpus";
+			};
+		};
+	};
+
+	axp323: pmic@36 {
+		compatible = "x-powers,axp323";
+		reg = <0x36>;
+		#interrupt-cells = <1>;
+		interrupt-controller;
+		status = "okay";
+
+		vin1-supply = <&reg_vcc5v>;
+		vin2-supply = <&reg_vcc5v>;
+		vin3-supply = <&reg_vcc5v>;
+
+		regulators {
+			reg_aldo1_323: aldo1 {
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vcc-wifi";
+			};
+
+			reg_dldo1_323: dldo1 {
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vcc-wifi2";
+			};
+
+			/* Supplies the "big" cluster (1.8 GHz cores) */
+			reg_dcdc1_323: dcdc1 {
+				regulator-always-on;
+				regulator-min-microvolt = <900000>;
+				regulator-max-microvolt = <1150000>;
+				regulator-name = "vdd-cpub";
+			};
+
+			/* DCDC2 is polyphased with DCDC1 */
+
+			/* Some RISC-V management core related voltage */
+			reg_dcdc3_323: dcdc3 {
+				regulator-always-on;
+				regulator-min-microvolt = <900000>;
+				regulator-max-microvolt = <900000>;
+				regulator-name = "vdd-dnr";
+			};
+		};
+	};
+};
+
+&r_pio {
+/*
+ * Specifying the supply would create a circular dependency.
+ *
+ *	vcc-pl-supply = <&reg_aldo3>;
+ */
+	vcc-pm-supply = <&reg_bldo2>;
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pb_pins>;
+	status = "okay";
+};
+
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
+	uart-has-rtscts;
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm4345c5";
+		clocks = <&rtc CLK_OSC32K_FANOUT>;
+		clock-names = "lpo";
+		vbat-supply = <&reg_aldo1_323>;
+		vddio-supply = <&reg_bldo1>;
+		device-wakeup-gpios = <&r_pio 1 3 GPIO_ACTIVE_HIGH>; /* PM3 */
+		host-wakeup-gpios = <&r_pio 1 4 GPIO_ACTIVE_HIGH>; /* PM4 */
+		shutdown-gpios = <&r_pio 1 2 GPIO_ACTIVE_HIGH>; /* PM2 */
+	};
+};
+
+&usb_otg {
+	 /*
+	  * The OTG controller is connected to one of the type-A ports.
+	  * There is a regulator, controlled by a GPIO, to provide VBUS power
+	  * to the port, and a VBUSDET GPIO, to detect externally provided
+	  * power. But without ID or CC pins there is no real way to do a
+	  * runtime role detection.
+	  */
+	dr_mode = "host";
+	status = "okay";
+};
+
+&usbphy {
+	usb0_vbus-supply = <&reg_otg_vbus>;
+	usb0_vbus_det-gpios = <&r_pio 0 7 GPIO_ACTIVE_HIGH>; /* PL7 */
+	usb1_vbus-supply = <&reg_usb_vbus>;
+	status = "okay";
+};
-- 
2.39.5