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Message-ID: <20220630010823.3935caf6@slackpad.lan>
Date:   Thu, 30 Jun 2022 01:08:23 +0100
From:   Andre Przywara <andre.przywara@....com>
To:     Jernej Škrabec <jernej.skrabec@...il.com>
Cc:     Samuel Holland <samuel@...lland.org>, Chen-Yu Tsai <wens@...e.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Icenowy Zheng <icenowy@...c.io>,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v11 5/6] arm64: dts: allwinner: h616: Add OrangePi Zero
 2 board support

On Tue, 03 May 2022 21:41:21 +0200
Jernej Škrabec <jernej.skrabec@...il.com> wrote:

Hi Jernej,

> Dne petek, 29. april 2022 ob 01:09:32 CEST je Andre Przywara napisal(a):
> > 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
> >   - unsupported Allwinner WiFi/BT chip
> > 
> > For more details see: https://linux-sunxi.org/Orange_Pi_Zero_2  
> 
> Please no external links.

Shame. I understand the reasons behind that, but this source is rather
stable (more so than some LKML archives ;-), and I copied the actual
important information. But well, I guess people have to put it in their
search engine and hope it doesn't drop them to the vendor's website ;-)

> > 
> > Signed-off-by: Andre Przywara <andre.przywara@....com>
> > ---
> >  arch/arm64/boot/dts/allwinner/Makefile        |   1 +
> >  .../allwinner/sun50i-h616-orangepi-zero2.dts  | 203 ++++++++++++++++++
> >  2 files changed, 204 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 8fa5c060a4fe..df2214e6d946 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 000000000000..ca07cae698ce
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
> > @@ -0,0 +1,203 @@
> > +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
> > +/*
> > + * Copyright (C) 2020 Arm Ltd.  
> 
> 2022?

Mmh, but why? I wrote this in 2020, and it was published the first time
that year[1]. If the copyright year means anything, by my understanding
it should cover the earliest publication date, to establish the license
conditions over every copy out there.

[1]
https://lore.kernel.org/linux-arm-kernel/20201202135409.13683-8-andre.przywara@arm.com/

> 
> > + */
> > +
> > +/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>;
> > +				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-boot-on;  
> 
> As discussed in the past, this will cause reboot issues because Linux will 
> turn down above regulator and thus SD card will stop working. This should be 
> always on.
> 
> And please add pio regulators, this is something we always add later...

Sure, thanks for the heads up, will do.

Cheers,
Andre

> 
> Best regards,
> Jernej
> 
> > +				regulator-min-microvolt =   
> <3300000>;
> > +				regulator-max-microvolt =   
> <3300000>;
> > +				regulator-name = "vcc-eth-mmc";
> > +			};
> > +
> > +			sw {
> > +				/* unused */
> > +			};
> > +		};
> > +	};
> > +};
> > +
> > +&spi0  {
> > +	status = "okay";
> > +
> > +	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";
> > +};
> > -- 
> > 2.35.3
> > 
> >   
> 
> 

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