From 4c92bf1cdc05ee6b7426c2450e9dcd6ffebad533 Mon Sep 17 00:00:00 2001
From: Patrick Yavitz <pyavitz@armbian.com>
Date: Tue, 7 Jan 2025 06:58:55 -0500
Subject: Add board BananaPi BPI-M4-Zero

Signed-off-by: Patrick Yavitz <pyavitz@armbian.com>
---
 arch/arm64/boot/dts/allwinner/Makefile        |   1 +
 .../sun50i-h618-bananapi-m4-zero.dts          | 110 ++++++++
 .../allwinner/sun50i-h618-bananapi-m4.dtsi    | 256 ++++++++++++++++++
 3 files changed, 367 insertions(+)
 create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h618-bananapi-m4-zero.dts
 create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h618-bananapi-m4.dtsi

diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
index 67f738f9b513..a676c57aad1d 100644
--- a/arch/arm64/boot/dts/allwinner/Makefile
+++ b/arch/arm64/boot/dts/allwinner/Makefile
@@ -59,6 +59,7 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-cb1-emmc.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-bigtreetech-pi.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb
+dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-bananapi-m4-zero.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-longanpi-3h.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-orangepi-zero2w.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-orangepi-zero3.dtb
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h618-bananapi-m4-zero.dts b/arch/arm64/boot/dts/allwinner/sun50i-h618-bananapi-m4-zero.dts
new file mode 100644
index 000000000000..46e07893c653
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h618-bananapi-m4-zero.dts
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2024 Patrick Yavitz <pyavitz@armbian.com>
+ */
+
+/dts-v1/;
+
+#include "sun50i-h618-bananapi-m4.dtsi"
+
+/ {
+	model = "BananaPi BPI-M4-Zero";
+	compatible = "sinovoip,bpi-m4-zero", "allwinner,sun50i-h618";
+
+	aliases {
+		ethernet0 = &emac1;
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		i2c3 = &i2c3;
+		i2c4 = &i2c4;
+		serial4 = &uart4;
+		serial5 = &uart5;
+		spi1 = &spi1;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-0 {
+			color = <LED_COLOR_ID_RED>;
+			function = LED_FUNCTION_STATUS;
+			gpios = <&pio 2 12 GPIO_ACTIVE_HIGH>;	/* PC12 */
+			linux,default-trigger = "heartbeat";
+		};
+	};
+};
+
+/* Connected to an on-board RTL8821CU USB WiFi chip. */
+&ehci1 {
+	status = "okay";
+};
+
+&ehci2 {
+	status = "okay";
+};
+
+&ehci3 {
+	status = "okay";
+};
+
+&emac1 {
+	status = "disabled";
+	pinctrl-0 = <&ext_rgmii_pins>;
+	pinctrl-names = "default";
+	phy-mode = "rgmii";
+	phy-handle = <&ext_rgmii_phy>;
+	phy-supply = <&reg_dldo1>;
+	allwinner,rx-delay-ps = <3100>;
+	allwinner,tx-delay-ps = <700>;
+};
+
+&mdio1 {
+	ext_rgmii_phy: ethernet-phy@1 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <1>;
+	};
+};
+
+/* SDIO */
+&mmc1 {
+	status = "disabled";
+	bus-width = <4>;
+	max-frequency = <100000000>;
+
+	non-removable;
+	disable-wp;
+
+	/* WiFi firmware requires power to be kept while in suspend */
+	keep-power-in-suspend;
+
+	mmc-pwrseq = <&wifi_pwrseq>;
+
+	cd-gpios = <&pio 6 15 GPIO_ACTIVE_HIGH>; /* PG15 */
+	vmmc-supply = <&reg_vcc3v3>;
+
+	sdio: wifi@1 {
+		reg = <1>;
+		compatible = "brcm,bcm4329-fmac";
+	};
+};
+
+&ohci1 {
+	status = "okay";
+};
+
+&ohci2 {
+	status = "okay";
+};
+
+&ohci3 {
+	status = "okay";
+};
+
+&usbotg {
+	status = "okay";
+	dr_mode = "peripheral";
+};
+
+&usbphy {
+	status = "okay";
+};
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h618-bananapi-m4.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h618-bananapi-m4.dtsi
new file mode 100644
index 000000000000..e9640439e02c
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h618-bananapi-m4.dtsi
@@ -0,0 +1,256 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2024 Patrick Yavitz <pyavitz@armbian.com>
+ */
+
+/dts-v1/;
+
+#include "sun50i-h616.dtsi"
+#include "sun50i-h616-cpu-opp.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	connector {
+		compatible = "hdmi-connector";
+		type = "d";
+
+		port {
+			hdmi_con_in: endpoint {
+				remote-endpoint = <&hdmi_out_con>;
+			};
+		};
+	};
+
+	reg_usb_vbus: regulator-usb-vbus {
+		/* Separate discrete regulator for the USB ports */
+		compatible = "regulator-fixed";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-name = "usb-vbus";
+		vin-supply = <&reg_vcc5v>;
+	};
+
+	reg_vcc5v: regulator-vcc5v {
+		/* Board wide 5V supply directly from the USB-C socket */
+		compatible = "regulator-fixed";
+		regulator-always-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-name = "vcc-5v";
+	};
+
+	reg_vcc3v3: regulator-vcc3v3 {
+		compatible = "regulator-fixed";
+		regulator-always-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-name = "vcc-3v3";
+		vin-supply = <&reg_vcc5v>;
+	};
+
+	reg_vcc1v8: regulator-vcc1v8 {
+		compatible = "regulator-fixed";
+		regulator-always-on;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-name = "vcc-1v8";
+		vin-supply = <&reg_vcc3v3>;
+	};
+
+	wifi_pwrseq: wifi-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		clocks = <&rtc CLK_OSC32K_FANOUT>;
+		clock-names = "ext_clock";
+		pinctrl-0 = <&x32clk_fanout_pin>;
+		pinctrl-names = "default";
+		post-power-on-delay-ms = <200>;
+		reset-gpios = <&pio 6 18 GPIO_ACTIVE_LOW>; /* PG18 */
+	};
+};
+
+&cpu0 {
+	cpu-supply = <&reg_dcdc2>;
+};
+
+&de {
+	status = "okay";
+};
+
+&gpu {
+	status = "disabled";
+	mali-supply = <&reg_dcdc1>;
+};
+
+&hdmi {
+	status = "okay";
+};
+
+&hdmi_out {
+	hdmi_out_con: endpoint {
+		remote-endpoint = <&hdmi_con_in>;
+	};
+};
+
+&i2c0 {
+	status = "disabled";
+	pinctrl-0 = <&i2c0_pins>;
+	pinctrl-names = "default";
+};
+
+&i2c1 {
+	status = "disabled";
+	pinctrl-0 = <&i2c1_pi_pins>;
+	pinctrl-names = "default";
+};
+
+&i2c3 {
+	status = "disabled";
+	pinctrl-0 = <&i2c3_pg_pins>;
+	pinctrl-names = "default";
+};
+
+&i2c4 {
+	status = "disabled";
+	pinctrl-0 = <&i2c4_pg_pins>;
+	pinctrl-names = "default";
+};
+
+&ir {
+	status = "disabled";
+	pinctrl-0 = <&ir_rx_pin>;
+	pinctrl-names = "default";
+};
+
+/* SD card */
+&mmc0 {
+	status = "okay";
+	bus-width = <4>;
+	max-frequency = <50000000>;
+
+	disable-wp;
+
+	cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>;	/* PF6 */
+	vmmc-supply = <&reg_vcc3v3>;
+};
+
+/* eMMC */
+&mmc2 {
+	status = "okay";
+	bus-width = <8>;
+	cap-mmc-hw-reset;
+	mmc-hs200-1_8v;
+
+	non-removable;
+	disable-wp;
+
+	vmmc-supply = <&reg_vcc3v3>;
+	vqmmc-supply = <&reg_vcc1v8>;
+};
+
+&pio {
+	vcc-pc-supply = <&reg_aldo1>;
+	vcc-pf-supply = <&reg_dldo1>;
+	vcc-pg-supply = <&reg_dldo1>;
+	vcc-ph-supply = <&reg_dldo1>;
+	vcc-pi-supply = <&reg_dldo1>;
+};
+
+&r_i2c {
+	status = "okay";
+	axp313: pmic@36 {
+		compatible = "x-powers,axp313a";
+		reg = <0x36>;
+		#interrupt-cells = <1>;
+		interrupt-controller;
+		interrupt-parent = <&pio>;
+
+		vin1-supply = <&reg_vcc5v>;
+		vin2-supply = <&reg_vcc5v>;
+		vin3-supply = <&reg_vcc5v>;
+
+		regulators {
+			reg_aldo1: aldo1 {
+				regulator-always-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-name = "vcc-1v8-pll";
+			};
+
+			reg_dldo1: dldo1 {
+				regulator-always-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vcc-3v3-io";
+			};
+
+			reg_dcdc1: dcdc1 {
+				regulator-always-on;
+				regulator-min-microvolt = <810000>;
+				regulator-max-microvolt = <990000>;
+				regulator-name = "vdd-gpu-sys";
+			};
+
+			reg_dcdc2: dcdc2 {
+				regulator-always-on;
+				regulator-min-microvolt = <810000>;
+				regulator-max-microvolt = <1100000>;
+				regulator-name = "vdd-cpu";
+			};
+
+			reg_dcdc3: dcdc3 {
+				regulator-always-on;
+				regulator-min-microvolt = <1100000>;
+				regulator-max-microvolt = <1100000>;
+				regulator-name = "vdd-dram";
+			};
+		};
+	};
+};
+
+&spi1 {
+	status = "disabled";
+	pinctrl-0 = <&spi1_pins>, <&spi1_cs1_pin>;
+	pinctrl-names = "default";
+
+	spidev@1 {
+		compatible = "rohm,dh2228fv";
+		reg = <1>;
+		spi-max-frequency = <1000000>;
+	};
+};
+
+&uart0 {
+	status = "okay";
+	pinctrl-0 = <&uart0_ph_pins>;
+	pinctrl-names = "default";
+};
+
+&uart1 {
+	status = "disabled";
+	pinctrl-0 = <&uart1_pins>;
+	pinctrl-names = "default";
+};
+
+&uart4 {
+	status = "disabled";
+	pinctrl-0 = <&uart4_pi_pins>;
+	pinctrl-names = "default";
+};
+
+&uart5 {
+	status = "disabled";
+	pinctrl-0 = <&uart5_pins>;
+	pinctrl-names = "default";
+};
-- 
2.35.3

