[PATCH V2 2/2] arm64: dts: Add basic support for BIQU CB1

[Martin Botka]

CB1 is Compute Module style board that plugs into Rpi board style adapter or
Manta 3D printer boards (M4P/M8P).

The board has:
	H616 SoC
	1GB of RAM
	AXP313A PMIC

And the actual boards that CB1 plugs in are just extension to it with ports and
thus are not split in DT.

Boards have:
	4x (3x for Manta boards) USB and 1 USB OTG.
	SDcard slot for loading images.
	Ethernet port wired to the internal PHY.
	2x HDMI 2.0.
	Power and Status LEDs.

Currently working:
	Booting
	USB
	UART

Signed-off-by: Martin Botka <martin.botka at somainline.org>
---
Changes in V2:
Add proper board compatible
Add regulator prefix for vcc5v
Drop okay status from PMIC
Drop standby_param
 arch/arm64/boot/dts/allwinner/Makefile        |   1 +
 .../dts/allwinner/sun50i-h616-biqu-cb1.dts    | 186 ++++++++++++++++++
 2 files changed, 187 insertions(+)
 create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h616-biqu-cb1.dts

diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
index 6a96494a2e0a..223f1be73541 100644
--- a/arch/arm64/boot/dts/allwinner/Makefile
+++ b/arch/arm64/boot/dts/allwinner/Makefile
@@ -38,5 +38,6 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-pine-h64.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-pine-h64-model-b.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6-mini.dtb
+dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-biqu-cb1.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616-biqu-cb1.dts b/arch/arm64/boot/dts/allwinner/sun50i-h616-biqu-cb1.dts
new file mode 100644
index 000000000000..297536d7629a
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-biqu-cb1.dts
@@ -0,0 +1,186 @@
+// SPDX-License-Identifier: (GPL-2.0+ or MIT)
+/*
+ * Copyright (C) 2022 Arm Ltd.
+ */
+
+/dts-v1/;
+
+#include "sun50i-h616.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+	model = "BIQU CB1";
+	compatible = "biqu,cb1", "allwinner,sun50i-h616";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-0 {
+			function = LED_FUNCTION_POWER;
+			color = <LED_COLOR_ID_RED>;
+			gpios = <&pio 2 12 GPIO_ACTIVE_HIGH>; /* PC12 */
+			default-state = "on";
+		};
+
+		led-1 {
+			function = LED_FUNCTION_STATUS;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&pio 2 13 GPIO_ACTIVE_HIGH>; /* PC13 */
+		};
+	};
+
+	reg_vcc5v: regulator_vcc5v {
+		/* board wide 5V supply directly from the USB-C socket */
+		compatible = "regulator-fixed";
+		regulator-name = "vcc-5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+	};
+
+	reg_usb1_vbus: regulator-usb1-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "usb1-vbus";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&reg_vcc5v>;
+		enable-active-high;
+		gpio = <&pio 2 16 GPIO_ACTIVE_HIGH>; /* PC16 */
+	};
+};
+
+&ehci0 {
+	status = "okay";
+};
+
+&ehci1 {
+	status = "okay";
+};
+
+&ehci2 {
+	status = "okay";
+};
+
+&ehci3 {
+	status = "okay";
+};
+
+&mmc0 {
+	vmmc-supply = <&reg_dldo1>;
+	cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>;	/* PF6 */
+	no-1-8-v;
+	bus-width = <4>;
+	status = "disabled";
+};
+
+&ohci0 {
+	status = "okay";
+};
+
+&ohci1 {
+	status = "okay";
+};
+
+&ohci2 {
+	status = "okay";
+};
+
+&ohci3 {
+	status = "okay";
+};
+
+&r_i2c {
+	status = "okay";
+
+	axp1530: pmic at 36 {
+		compatible = "x-powers,axp1530";
+		reg = <0x36>;
+		wakeup-source;
+
+		regulators{
+			reg_dcdc1: dcdc1 {
+				regulator-name = "axp1530-dcdc1";
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <3400000>;
+				regulator-step-delay-us = <25>;
+				regulator-final-delay-us = <50>;
+				regulator-always-on;
+			};
+
+			reg_dcdc2: dcdc2 {
+				regulator-name = "axp1530-dcdc2";
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1540000>;
+				regulator-step-delay-us = <25>;
+				regulator-final-delay-us = <50>;
+				regulator-ramp-delay = <200>;
+				regulator-always-on;
+			};
+
+			reg_dcdc3: dcdc3 {
+				regulator-name = "axp1530-dcdc3";
+				regulator-min-microvolt = <500000>;
+				regulator-max-microvolt = <1840000>;
+				regulator-step-delay-us = <25>;
+				regulator-final-delay-us = <50>;
+				regulator-always-on;
+			};
+
+			reg_aldo1: ldo1 {
+				regulator-name = "axp1530-aldo1";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-step-delay-us = <25>;
+				regulator-final-delay-us = <50>;
+				regulator-always-on;
+			};
+
+			reg_dldo1: ldo2 {
+				regulator-name = "axp1530-dldo1";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-step-delay-us = <25>;
+				regulator-final-delay-us = <50>;
+				regulator-always-on;
+			};
+		};
+	};
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_ph_pins>;
+	status = "okay";
+};
+
+&usbotg {
+	/*
+	 * PHY0 pins are connected to a USB-C socket, but a role switch
+	 * is not implemented: both CC pins are pulled to GND.
+	 * The VBUS pins power the device, so a fixed peripheral mode
+	 * is the best choice.
+	 * The board can be powered via GPIOs, in this case port0 *can*
+	 * act as a host (with a cable/adapter ignoring CC), as VBUS is
+	 * then provided by the GPIOs. Any user of this setup would
+	 * need to adjust the DT accordingly: dr_mode set to "host",
+	 * enabling OHCI0 and EHCI0.
+	 */
+	dr_mode = "peripheral";
+	status = "okay";
+};
+
+&usbphy {
+	usb1_vbus-supply = <&reg_usb1_vbus>;
+	status = "okay";
+};
-- 
2.38.1