arm64: dts: allwinner: h616: Add OrangePi Zero 3 board support

The OrangePi Zero 3 is a development board based on the Allwinner H618 SoC,
which seems to be just an H616 with more L2 cache. The board itself is a
slightly updated version of the Orange Pi Zero 2. It features:
- Four ARM Cortex-A53 cores, Mali-G31 MP2 GPU
- 1/1.5/2/4 GiB LPDDR4 DRAM SKUs (only up to 1GB on the Zero2)
- AXP313a PMIC (more capable AXP305 on the Zero2)
- Raspberry-Pi-1 compatible GPIO header
- extra 13 pin expansion header, exposing pins for 2x USB 2.0 ports
- 1 USB 2.0 host port
- 1 USB 2.0 type C port (power supply + OTG)
- MicroSD slot
- on-board 16MiB bootable SPI NOR flash (only 2MB on the Zero2)
- 1Gbps Ethernet port (via Motorcomm YT8531 PHY) (RTL8211 on the Zero2)
- micro-HDMI port
- (yet) unsupported Allwinner WiFi/BT chip

Add the devicetree file describing the currently supported features,
namely LEDs, SD card, PMIC, SPI flash, USB. Ethernet seems unstable at
the moment, though the basic functionality works.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20230804170856.1237202-4-andre.przywara@arm.com
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>

diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
index 6a96494a2e0a3baf5104b08f21b3ce2799804993..3b0ad5406238176ef62255c641f0028633cb6627 100644 (file)
--- a/arch/arm64/boot/dts/allwinner/Makefile
+++ b/arch/arm64/boot/dts/allwinner/Makefile
@@ -40,3 +40,4 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h6-tanix-tx6-mini.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-orangepi-zero2.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h616-x96-mate.dtb
+dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-orangepi-zero3.dtb

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero3.dts b/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero3.dts
new file mode 100644 (file)
index 0000000..96a6851
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero3.dts
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: (GPL-2.0+ or MIT)
+/*
+ * Copyright (C) 2023 Arm Ltd.
+ */
+
+/dts-v1/;
+
+#include "sun50i-h616-orangepi-zero.dtsi"
+
+/ {
+       model = "OrangePi Zero3";
+       compatible = "xunlong,orangepi-zero3", "allwinner,sun50i-h618";
+};
+
+&emac0 {
+       phy-supply = <&reg_dldo1>;
+};
+
+&ext_rgmii_phy {
+       motorcomm,clk-out-frequency-hz = <125000000>;
+};
+
+&mmc0 {
+       /*
+        * The schematic shows the card detect pin wired up to PF6, via an
+        * inverter, but it just doesn't work.
+        */
+       broken-cd;
+       vmmc-supply = <&reg_dldo1>;
+};
+
+&r_i2c {
+       status = "okay";
+
+       axp313: pmic@36 {
+               compatible = "x-powers,axp313a";
+               reg = <0x36>;
+               #interrupt-cells = <1>;
+               interrupt-controller;
+               interrupt-parent = <&pio>;
+               interrupts = <2 9 IRQ_TYPE_LEVEL_LOW>;  /* PC9 */
+
+               vin1-supply = <&reg_vcc5v>;
+               vin2-supply = <&reg_vcc5v>;
+               vin3-supply = <&reg_vcc5v>;
+
+               regulators {
+                       /* Supplies VCC-PLL, so needs to be always on. */
+                       reg_aldo1: aldo1 {
+                               regulator-always-on;
+                               regulator-min-microvolt = <1800000>;
+                               regulator-max-microvolt = <1800000>;
+                               regulator-name = "vcc1v8";
+                       };
+
+                       /* Supplies VCC-IO, so needs to be always on. */
+                       reg_dldo1: dldo1 {
+                               regulator-always-on;
+                               regulator-min-microvolt = <3300000>;
+                               regulator-max-microvolt = <3300000>;
+                               regulator-name = "vcc3v3";
+                       };
+
+                       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";
+                       };
+               };
+       };
+};
+
+&pio {
+       vcc-pc-supply = <&reg_dldo1>;
+       vcc-pf-supply = <&reg_dldo1>;
+       vcc-pg-supply = <&reg_aldo1>;
+       vcc-ph-supply = <&reg_dldo1>;
+       vcc-pi-supply = <&reg_dldo1>;
+};