Re: [linux-sunxi] Re: [PATCH 3/3] ARM: dts: sunxi: add support for Orange Pi Zero board

From: Hans de Goede
Date: Mon Nov 14 2016 - 05:07:03 EST

HI,

On 14-11-16 10:09, Chen-Yu Tsai wrote:
On Mon, Nov 14, 2016 at 4:58 PM, Maxime Ripard
<maxime.ripard@xxxxxxxxxxxxxxxxxx> wrote:
Hi,

On Sat, Nov 12, 2016 at 12:46:54AM +0800, Icenowy Zheng wrote:
Orange Pi Zero is a board that came with the new Allwinner H2+ SoC.

Add a device tree file for it.

As there's still no mainline-compatible driver for the SDIO WLAN card on
board (a new card by Allwinner), the mmc1 controller is not enabled yet.

Signed-off-by: Icenowy Zheng <icenowy@xxxxxxxx>
---
arch/arm/boot/dts/Makefile | 1 +
arch/arm/boot/dts/sun8i-h2plus-orangepi-zero.dts | 148 +++++++++++++++++++++++
2 files changed, 149 insertions(+)
create mode 100644 arch/arm/boot/dts/sun8i-h2plus-orangepi-zero.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index befcd26..9843fb0 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -818,6 +818,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
sun8i-a33-sinlinx-sina33.dtb \
sun8i-a83t-allwinner-h8homlet-v2.dtb \
sun8i-a83t-cubietruck-plus.dtb \
+ sun8i-h2plus-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-h2plus-orangepi-zero.dts b/arch/arm/boot/dts/sun8i-h2plus-orangepi-zero.dts
new file mode 100644
index 0000000..581f56e
--- /dev/null
+++ b/arch/arm/boot/dts/sun8i-h2plus-orangepi-zero.dts
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2016 Icenowy Zheng <icenowy@xxxxxxxx>
+ *
+ * Based on sun8i-h3-orangepi-one.dts, which is:
+ * Copyright (C) 2016 Hans de Goede <hdegoede@xxxxxxxxxx>
+ *
+ * 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-h2plus.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-h2plus",
+ "allwinner,sun8i-h3";

You don't need the H3 compatible here.

+
+ aliases {
+ serial0 = &uart0;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ leds {
+ compatible = "gpio-leds";
+ pinctrl-names = "default";
+ pinctrl-0 = <&leds_opi0>, <&leds_r_opi0>;
+
+ 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>;
+ };
+ };
+};
+
+&ehci1 {
+ status = "okay";
+};
+
+&mmc0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>;
+ vmmc-supply = <&reg_vcc3v3>;
+ bus-width = <4>;
+ cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>; /* PF6 */
+ cd-inverted;
+ status = "okay";
+};
+
+&ohci1 {
+ status = "okay";
+};
+
+&pio {
+ leds_opi0: led_pins@0 {
+ allwinner,pins = "PA17";
+ allwinner,function = "gpio_out";
+ allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+ };
+};
+
+&r_pio {
+ leds_r_opi0: led_pins@0 {
+ allwinner,pins = "PL10";
+ allwinner,function = "gpio_out";
+ allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;

You can drop the drive and pull properties, and could you use the
generic pins and function properties for those nodes?

Icenowy,
Given that sunxi-next is currently broken for the pinctrl stuff,
you will need this patch to test, until Linus merges it:

https://github.com/wens/linux/commit/e8ce92925a6dd1b2b38ed8699e81d0bc9804de20


+ };
+};
+
+&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";
+};
+
+&uart3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart3_pins>;
+ status = "disabled";
+};

I'm guessing that those UART are exposed on headers?

+
+&usbphy {
+ /* USB VBUS is always on */

You can put the always on regulators (I'm guessing reg_vcc5v0 ?) here.

AFAIK the regulator properties are optional the the USB PHY.
So we probably don't need to add it. Hans (CC-ed) could explain
his original intent?

I've made the regulators optional exactly for boards like these,
where there is no regulator. Likely the Vbus is simply wired
directly to the 5V DC-in jack. So IMHO adding something like
the fixed reg_vcc5v0 a supply here just makes the dt
harder to read.

Regards,

Hans




Regards
ChenYu


+ status = "okay";
+};

Thanks,
Maxime

--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com