linux-kernel - Re: [PATCH v3 9/9] ARM: dts: sun8i: s3: add devicetree for Lichee zero plus w/ S3

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Message-ID: <1E6AB747-5A4C-4515-A0EB-F0E89F520CF7@aosc.io>
Date:   Mon, 24 Jun 2019 21:43:23 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     linux-arm-kernel@...ts.infradead.org,
        Maxime Ripard <maxime.ripard@...tlin.com>
CC:     devicetree@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-sunxi@...glegroups.com, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org, Chen-Yu Tsai <wens@...e.org>,
        Rob Herring <robh+dt@...nel.org>, linux-clk@...r.kernel.org
Subject: Re: [PATCH v3 9/9] ARM: dts: sun8i: s3: add devicetree for Lichee zero plus w/ S3



于 2019年6月24日 GMT+08:00 下午8:43:01, Maxime Ripard <maxime.ripard@...tlin.com> 写到:
>On Sun, Jun 23, 2019 at 12:38:01PM +0800, Icenowy Zheng wrote:
>> Lichee zero plus is a core board made by Sipeed, which includes
>on-board
>> TF slot or SMT SD NAND, and optional SPI NOR or eMMC, a UART debug
>> header, a microUSB slot and a gold finger connector for expansion. It
>> can use either Sochip S3 or Allwinner S3L SoC.
>>
>> Add the basic device tree for the core board, w/o optional onboard
>> storage, and with S3 SoC.
>>
>> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
>> ---
>> Changes in v3:
>> - Drop common regulator DTSI usage and added vcc3v3 regulator.
>>
>>  arch/arm/boot/dts/Makefile                    |  1 +
>>  .../boot/dts/sun8i-s3-lichee-zero-plus.dts    |  8 ++++
>>  .../dts/sun8i-s3-s3l-lichee-zero-plus.dtsi    | 44
>+++++++++++++++++++
>>  3 files changed, 53 insertions(+)
>>  create mode 100644 arch/arm/boot/dts/sun8i-s3-lichee-zero-plus.dts
>>  create mode 100644
>arch/arm/boot/dts/sun8i-s3-s3l-lichee-zero-plus.dtsi
>>
>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>> index c4742afe41a7..d24dec29245e 100644
>> --- a/arch/arm/boot/dts/Makefile
>> +++ b/arch/arm/boot/dts/Makefile
>> @@ -1113,6 +1113,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
>>  	sun8i-r16-nintendo-super-nes-classic.dtb \
>>  	sun8i-r16-parrot.dtb \
>>  	sun8i-r40-bananapi-m2-ultra.dtb \
>> +	sun8i-s3-lichee-zero-plus.dtb \
>>  	sun8i-t3-cqa3t-bv3.dtb \
>>  	sun8i-v3s-licheepi-zero.dtb \
>>  	sun8i-v3s-licheepi-zero-dock.dtb \
>> diff --git a/arch/arm/boot/dts/sun8i-s3-lichee-zero-plus.dts
>b/arch/arm/boot/dts/sun8i-s3-lichee-zero-plus.dts
>> new file mode 100644
>> index 000000000000..7d2f6b145190
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/sun8i-s3-lichee-zero-plus.dts
>> @@ -0,0 +1,8 @@
>> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>> +/*
>> + * Copyright (C) 2019 Icenowy Zheng <icenowy@...c.io>
>> + */
>> +
>> +/dts-v1/;
>> +#include "sun8i-s3.dtsi"
>> +#include "sun8i-s3-s3l-lichee-zero-plus.dtsi"
>> diff --git a/arch/arm/boot/dts/sun8i-s3-s3l-lichee-zero-plus.dtsi
>b/arch/arm/boot/dts/sun8i-s3-s3l-lichee-zero-plus.dtsi
>> new file mode 100644
>> index 000000000000..e68f738c3046
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/sun8i-s3-s3l-lichee-zero-plus.dtsi
>> @@ -0,0 +1,46 @@
>> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>> +/*
>> + * Copyright (C) 2019 Icenowy Zheng <icenowy@...c.io>
>> + */
>> +
>> +#include <dt-bindings/gpio/gpio.h>
>> +
>> +/ {
>> +	aliases {
>> +		serial0 = &uart0;
>> +	};
>> +
>> +	chosen {
>> +		stdout-path = "serial0:115200n8";
>> +	};
>> +
>> +	reg_vcc3v3: vcc3v3 {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "vcc3v3";
>> +		regulator-min-microvolt = <3300000>;
>> +		regulator-max-microvolt = <3300000>;
>> +	};
>> +};
>> +
>> +&mmc0 {
>> +	broken-cd;
>> +	bus-width = <4>;
>> +	vmmc-supply = <&reg_vcc3v3>;
>> +	status = "okay";
>> +};
>> +
>> +&uart0 {
>> +	pinctrl-0 = <&uart0_pb_pins>;
>> +	pinctrl-names = "default";
>> +	status = "okay";
>> +};
>> +
>> +&usb_otg {
>> +	dr_mode = "otg";
>> +	status = "okay";
>> +};
>> +
>> +&usbphy {
>> +	usb0_id_det-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>;
>> +	status = "okay";
>> +};
>
>How can it do OTG if there's no controllable VBUS regulator?

All 5V's are connected together, like Orange Pi Zero.

>
>Maxime
>
>--
>Maxime Ripard, Bootlin
>Embedded Linux and Kernel engineering
>https://bootlin.com

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