Re: [PATCH v12 6/7] arm64: dts: allwinner: h616: Add OrangePi Zero 2 board support

From: Andre Przywara
Date: Fri Jul 08 2022 - 05:50:00 EST

On Mon, 4 Jul 2022 20:45:18 -0500
Samuel Holland <samuel@xxxxxxxxxxxx> wrote:

Hi Samuel,

> 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@xxxxxxx>
>
> 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.)

Copied from somewhere, not entirely sure where from. The vendor DT
lists the full AXP range, with a surely unhealthy upper limit of 1.52V.
My copy of the datasheet lists max 1.1V for the CPU and 0.99V for
the GPU (recommended operating conditions), so I am using those values
now.

Thanks for spotting.

Cheers,
Andre


>
> 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";
> > +};
> >
>