Devicetree

* Re: [PATCH v3 -next 2/2] ARM: dts: sunxi: add support for Orange Pi Zero board
From: Chen-Yu Tsai @ 2016-12-02 16:41 UTC (permalink / raw)
  To: Icenowy Zheng
  Cc: Maxime Ripard, Chen-Yu Tsai, Rob Herring, Russell King,
	Andre Przywara, Hans de Goede, Arnd Bergmann, Vishnu Patekar,
	linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-arm-kernel, linux-kernel, devicetree, linux-sunxi
In-Reply-To: <20161202150513.34691-2-icenowy-ymACFijhrKM@public.gmane.org>

Hi,

On Fri, Dec 2, 2016 at 11:05 PM, Icenowy Zheng <icenowy-ymACFijhrKM@public.gmane.org> wrote:
> Orange Pi Zero is a board that came with the new Allwinner H2+ SoC and a
> SDIO Wi-Fi chip by Allwinner (XR819).
>
> Add a device tree file for it.
>
> Signed-off-by: Icenowy Zheng <icenowy-ymACFijhrKM@public.gmane.org>
> ---
> Changes since v2:
> - Merged SDIO Wi-Fi patch into it.
> - SDIO Wi-Fi: add a ethernet1 alias to it, as it has no internal NVRAM.
> - SDIO Wi-Fi: changed pinctrl binding to generic pinconf
> - removed all gpio pinctrl nodes
> - changed h2plus to h2-plus
> Changes since v1:
> - Convert to generic pinconf bindings.
> - SDIO Wi-Fi: add patch.
>
> Some notes:
> - The uart1 and uart2 is available on the unsoldered gpio header.
> - The onboard USB connector has its Vbus directly connected to DCIN-5V (the
>   power jack)
>
>  arch/arm/boot/dts/Makefile                        |   1 +
>  arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts | 159 ++++++++++++++++++++++
>  2 files changed, 160 insertions(+)
>  create mode 100644 arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 6447abc..59f6e86 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -844,6 +844,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
>         sun8i-a33-sinlinx-sina33.dtb \
>         sun8i-a83t-allwinner-h8homlet-v2.dtb \
>         sun8i-a83t-cubietruck-plus.dtb \
> +       sun8i-h2-plus-orangepi-zero.dtb \
>         sun8i-h3-bananapi-m2-plus.dtb \
>         sun8i-h3-nanopi-neo.dtb \
>         sun8i-h3-orangepi-2.dtb \
> diff --git a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
> new file mode 100644
> index 0000000..d18807f
> --- /dev/null
> +++ b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
> @@ -0,0 +1,159 @@
> +/*
> + * Copyright (C) 2016 Icenowy Zheng <icenowy-ymACFijhrKM@public.gmane.org>
> + *
> + * Based on sun8i-h3-orangepi-one.dts, which is:
> + *   Copyright (C) 2016 Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> + *
> + * This file is dual-licensed: you can use it either under the terms
> + * of the GPL or the X11 license, at your option. Note that this dual
> + * licensing only applies to this file, and not this project as a
> + * whole.
> + *
> + *  a) This file is free software; you can redistribute it and/or
> + *     modify it under the terms of the GNU General Public License as
> + *     published by the Free Software Foundation; either version 2 of the
> + *     License, or (at your option) any later version.
> + *
> + *     This file is distributed in the hope that it will be useful,
> + *     but WITHOUT ANY WARRANTY; without even the implied warranty of
> + *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + *     GNU General Public License for more details.
> + *
> + * Or, alternatively,
> + *
> + *  b) Permission is hereby granted, free of charge, to any person
> + *     obtaining a copy of this software and associated documentation
> + *     files (the "Software"), to deal in the Software without
> + *     restriction, including without limitation the rights to use,
> + *     copy, modify, merge, publish, distribute, sublicense, and/or
> + *     sell copies of the Software, and to permit persons to whom the
> + *     Software is furnished to do so, subject to the following
> + *     conditions:
> + *
> + *     The above copyright notice and this permission notice shall be
> + *     included in all copies or substantial portions of the Software.
> + *
> + *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> + *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
> + *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> + *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
> + *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
> + *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + *     OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +/dts-v1/;
> +#include "sun8i-h3.dtsi"
> +#include "sunxi-common-regulators.dtsi"
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/input.h>
> +#include <dt-bindings/pinctrl/sun4i-a10.h>
> +
> +/ {
> +       model = "Xunlong Orange Pi Zero";
> +       compatible = "xunlong,orangepi-zero", "allwinner,sun8i-h2-plus";
> +
> +       aliases {
> +               serial0 = &uart0;
> +               /* ethernet0 is the H3 emac, defined in sun8i-h3.dtsi */
> +               ethernet1 = &xr819;
> +       };
> +
> +       chosen {
> +               stdout-path = "serial0:115200n8";
> +       };
> +
> +       leds {
> +               compatible = "gpio-leds";
> +
> +               pwr_led {
> +                       label = "orangepi:green:pwr";
> +                       gpios = <&r_pio 0 10 GPIO_ACTIVE_HIGH>;
> +                       default-state = "on";
> +               };
> +
> +               status_led {
> +                       label = "orangepi:red:status";
> +                       gpios = <&pio 0 17 GPIO_ACTIVE_HIGH>;
> +               };
> +       };
> +
> +       reg_vcc_wifi: reg_vcc_wifi {
> +               compatible = "regulator-fixed";
> +               regulator-min-microvolt = <3300000>;
> +               regulator-max-microvolt = <3300000>;
> +               regulator-name = "vcc-wifi";
> +               enable-active-high;
> +               gpio = <&pio 0 20 GPIO_ACTIVE_HIGH>;
> +       };
> +
> +       wifi_pwrseq: wifi_pwrseq {
> +               compatible = "mmc-pwrseq-simple";
> +               reset-gpios = <&r_pio 0 7 GPIO_ACTIVE_LOW>;
> +       };
> +};
> +
> +&ehci1 {
> +       status = "okay";
> +};
> +
> +&mmc0 {
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&mmc0_pins_a>;
> +       vmmc-supply = <&reg_vcc3v3>;
> +       bus-width = <4>;
> +       cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>; /* PF6 */
> +       cd-inverted;
> +       status = "okay";
> +};
> +
> +&mmc1 {
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&mmc1_pins_a>;
> +       vmmc-supply = <&reg_vcc_wifi>;
> +       mmc-pwrseq = <&wifi_pwrseq>;
> +       bus-width = <4>;
> +       non-removable;
> +       status = "okay";
> +
> +       /*
> +        * Explicitly define the sdio device, so that we can add an ethernet
> +        * alias for it (which e.g. makes u-boot set a mac-address).
> +        */
> +       xr819: sdio_wifi@1 {
> +               reg = <1>;
> +       };
> +};
> +
> +&mmc1_pins_a {
> +       bias-pull-up;

This is already set in h3.dtsi

> +};
> +
> +&ohci1 {
> +       status = "okay";
> +};
> +
> +&uart0 {
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&uart0_pins_a>;
> +       status = "okay";
> +};
> +
> +&uart1 {
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&uart1_pins>;
> +       status = "disabled";
> +};
> +
> +&uart2 {
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&uart2_pins>;
> +       status = "disabled";
> +};
> +
> +&usbphy {
> +       /* USB VBUS is always on */

I think this comment could use a little work.

AFAIK this board doesn't have an actual USB port.
It's just the D+/D- pins on the pin header, along
with the board-wide 5V, also on the pin header.

ChenYu

> +       status = "okay";
> +};
> --
> 2.10.2
>
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