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SubjectRe: [PATCH v12 6/7] arm64: dts: allwinner: h616: Add OrangePi Zero 2 board support
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Hi Andre,

On 7/1/22 6:24 AM, Andre Przywara wrote:
> The OrangePi Zero 2 is a development board with the new H616 SoC. It
> comes with the following features:
> - Four ARM Cortex-A53 cores, Mali-G31 MP2 GPU
> - 512MiB/1GiB DDR3 DRAM
> - AXP305 PMIC
> - 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 2MiB bootable SPI NOR flash
> - 1Gbps Ethernet port (via RTL8211F PHY)
> - micro-HDMI port
> - (yet) unsupported Allwinner WiFi/BT chip
>
> Add the devicetree file describing the currently supported features.
>
> Signed-off-by: Andre Przywara <andre.przywara@arm.com>

One question below.

> ---
> arch/arm64/boot/dts/allwinner/Makefile | 1 +
> .../allwinner/sun50i-h616-orangepi-zero2.dts | 213 ++++++++++++++++++
> 2 files changed, 214 insertions(+)
> create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
>
> diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
> index 8fa5c060a4fef..df2214e6d946a 100644
> --- a/arch/arm64/boot/dts/allwinner/Makefile
> +++ b/arch/arm64/boot/dts/allwinner/Makefile
> @@ -38,3 +38,4 @@ 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-orangepi-zero2.dtb
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts b/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
> new file mode 100644
> index 0000000000000..cff199536d3bc
> --- /dev/null
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
> @@ -0,0 +1,213 @@
> +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
> +/*
> + * Copyright (C) 2020 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 = "OrangePi Zero2";
> + compatible = "xunlong,orangepi-zero2", "allwinner,sun50i-h616";
> +
> + aliases {
> + ethernet0 = &emac0;
> + 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: 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;
> + };
> +};
> +
> +&emac0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&ext_rgmii_pins>;
> + phy-mode = "rgmii";
> + phy-handle = <&ext_rgmii_phy>;
> + phy-supply = <&reg_dcdce>;
> + allwinner,rx-delay-ps = <3100>;
> + allwinner,tx-delay-ps = <700>;
> + status = "okay";
> +};
> +
> +&mdio0 {
> + ext_rgmii_phy: ethernet-phy@1 {
> + compatible = "ethernet-phy-ieee802.3-c22";
> + reg = <1>;
> + };
> +};
> +
> +&mmc0 {
> + vmmc-supply = <&reg_dcdce>;
> + cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>; /* PF6 */
> + bus-width = <4>;
> + status = "okay";
> +};
> +
> +&r_rsb {
> + status = "okay";
> +
> + axp305: pmic@745 {
> + compatible = "x-powers,axp305", "x-powers,axp805",
> + "x-powers,axp806";
> + interrupt-controller;
> + #interrupt-cells = <1>;
> + reg = <0x745>;
> +
> + x-powers,self-working-mode;
> + vina-supply = <&reg_vcc5v>;
> + vinb-supply = <&reg_vcc5v>;
> + vinc-supply = <&reg_vcc5v>;
> + vind-supply = <&reg_vcc5v>;
> + vine-supply = <&reg_vcc5v>;
> + aldoin-supply = <&reg_vcc5v>;
> + bldoin-supply = <&reg_vcc5v>;
> + cldoin-supply = <&reg_vcc5v>;
> +
> + regulators {
> + reg_aldo1: aldo1 {
> + regulator-always-on;
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-name = "vcc-sys";
> + };
> +
> + reg_aldo2: aldo2 { /* 3.3V on headers */
> + regulator-always-on;
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-name = "vcc3v3-ext";
> + };
> +
> + reg_aldo3: aldo3 { /* 3.3V on headers */
> + regulator-always-on;
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-name = "vcc3v3-ext2";
> + };
> +
> + reg_bldo1: bldo1 {
> + regulator-always-on;
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + regulator-name = "vcc1v8";
> + };
> +
> + bldo2 {
> + /* unused */
> + };
> +
> + bldo3 {
> + /* unused */
> + };
> +
> + bldo4 {
> + /* unused */
> + };
> +
> + cldo1 {
> + /* reserved */
> + };
> +
> + cldo2 {
> + /* unused */
> + };
> +
> + cldo3 {
> + /* unused */
> + };
> +
> + reg_dcdca: dcdca {
> + regulator-always-on;
> + regulator-min-microvolt = <810000>;
> + regulator-max-microvolt = <1080000>;
> + regulator-name = "vdd-cpu";
> + };
> +
> + reg_dcdcc: dcdcc {
> + regulator-always-on;
> + regulator-min-microvolt = <810000>;
> + regulator-max-microvolt = <1080000>;

Where does the max voltage here come from? The H616 datasheet lists the limit
for both VDD_GPU and VDD_SYS as 0.99 V. (This applies to both boards.)

Regards,
Samuel

> + regulator-name = "vdd-gpu-sys";
> + };
> +
> + reg_dcdcd: dcdcd {
> + regulator-always-on;
> + regulator-min-microvolt = <1500000>;
> + regulator-max-microvolt = <1500000>;
> + regulator-name = "vdd-dram";
> + };
> +
> + reg_dcdce: dcdce {
> + regulator-always-on;
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-name = "vcc-eth-mmc";
> + };
> +
> + sw {
> + /* unused */
> + };
> + };
> + };
> +};
> +
> +&pio {
> + vcc-pc-supply = <&reg_aldo1>;
> + vcc-pf-supply = <&reg_aldo1>;
> + vcc-pg-supply = <&reg_bldo1>;
> + vcc-ph-supply = <&reg_aldo1>;
> + vcc-pi-supply = <&reg_aldo1>;
> +};
> +
> +&spi0 {
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
> +
> + flash@0 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "jedec,spi-nor";
> + reg = <0>;
> + spi-max-frequency = <40000000>;
> + };
> +};
> +
> +&uart0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart0_ph_pins>;
> + status = "okay";
> +};
>

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