Re: [PATCH v3 09/11] ARM: dts: suniv: add device tree for PopStick v1.1

From: Andre Przywara <andre.przywara@arm.com>
To: Samuel Holland <samuel@sholland.org>
Cc: Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Icenowy Zheng <uwu@icenowy.me>,
	soc@kernel.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-sunxi@lists.linux.dev, linux-phy@lists.infradead.org,
	linux-usb@vger.kernel.org
Subject: Re: [PATCH v3 09/11] ARM: dts: suniv: add device tree for PopStick v1.1
Date: Mon, 14 Nov 2022 00:17:33 +0000	[thread overview]
Message-ID: <20221114001733.02c94151@slackpad.lan> (raw)
In-Reply-To: <7d7a84bd-78e2-868b-6659-9dcc596c718c@sholland.org>

On Sun, 13 Nov 2022 16:41:04 -0600
Samuel Holland <samuel@sholland.org> wrote:

> On 11/6/22 09:48, Andre Przywara wrote:
> > From: Icenowy Zheng <uwu@icenowy.me>
> > 
> > PopStick is a minimal Allwinner F1C200s dongle, with its USB controller
> > wired to a USB Type-A port, a SD slot and a SPI NAND flash on board, and
> > an on-board CH340 USB-UART converted connected to F1C200s's UART0.
> > 
> > Add a device tree for it. As F1C200s is just F1C100s with a different
> > DRAM chip co-packaged, directly use F1C100s DTSI here.
> > 
> > This commit covers the v1.1 version of this board, which is now shipped.
> > v1.0 is some internal sample that have not been shipped at all.
> > 
> > Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
> > Signed-off-by: Andre Przywara <andre.przywara@arm.com>
> > ---
> >  arch/arm/boot/dts/Makefile                    |  3 +-
> >  .../boot/dts/suniv-f1c200s-popstick-v1.1.dts  | 99 +++++++++++++++++++
> >  2 files changed, 101 insertions(+), 1 deletion(-)
> >  create mode 100644 arch/arm/boot/dts/suniv-f1c200s-popstick-v1.1.dts
> > 
> > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> > index 6aa7dc4db2fc..0249c07bd8a6 100644
> > --- a/arch/arm/boot/dts/Makefile
> > +++ b/arch/arm/boot/dts/Makefile
> > @@ -1391,7 +1391,8 @@ dtb-$(CONFIG_MACH_SUN9I) += \
> >  	sun9i-a80-optimus.dtb \
> >  	sun9i-a80-cubieboard4.dtb
> >  dtb-$(CONFIG_MACH_SUNIV) += \
> > -	suniv-f1c100s-licheepi-nano.dtb
> > +	suniv-f1c100s-licheepi-nano.dtb \
> > +	suniv-f1c200s-popstick-v1.1.dtb
> >  dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += \
> >  	tegra20-acer-a500-picasso.dtb \
> >  	tegra20-asus-tf101.dtb \
> > diff --git a/arch/arm/boot/dts/suniv-f1c200s-popstick-v1.1.dts b/arch/arm/boot/dts/suniv-f1c200s-popstick-v1.1.dts
> > new file mode 100644
> > index 000000000000..7d69b5fcb905
> > --- /dev/null
> > +++ b/arch/arm/boot/dts/suniv-f1c200s-popstick-v1.1.dts
> > @@ -0,0 +1,99 @@
> > +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> > +/*
> > + * Copyright 2022 Icenowy Zheng <uwu@icenowy.me>
> > + */
> > +
> > +/dts-v1/;
> > +#include "suniv-f1c100s.dtsi"
> > +
> > +#include <dt-bindings/gpio/gpio.h>
> > +#include <dt-bindings/leds/common.h>
> > +
> > +/ {
> > +	model = "Popcorn Computer PopStick v1.1";
> > +	compatible = "sourceparts,popstick-v1.1", "sourceparts,popstick",
> > +		     "allwinner,suniv-f1c200s", "allwinner,suniv-f1c100s";
> > +
> > +	aliases {
> > +		serial0 = &uart0;
> > +	};
> > +
> > +	chosen {
> > +		stdout-path = "serial0:115200n8";
> > +	};
> > +
> > +	leds {
> > +		compatible = "gpio-leds";
> > +
> > +		led {
> > +			function = LED_FUNCTION_STATUS;
> > +			color = <LED_COLOR_ID_GREEN>;
> > +			gpios = <&pio 4 6 GPIO_ACTIVE_HIGH>; /* PE6 */
> > +			linux,default-trigger = "heartbeat";
> > +		};
> > +	};
> > +
> > +	reg_vcc3v3: regulator-3v3 {
> > +		compatible = "regulator-fixed";
> > +		regulator-name = "vcc3v3";
> > +		regulator-min-microvolt = <3300000>;
> > +		regulator-max-microvolt = <3300000>;
> > +	};
> > +};
> > +
> > +&mmc0 {
> > +	cd-gpios = <&pio 4 3 GPIO_ACTIVE_LOW>; /* PE3 */
> > +	bus-width = <4>;
> > +	disable-wp;
> > +	vmmc-supply = <&reg_vcc3v3>;
> > +	status = "okay";
> > +};
> > +
> > +&otg_sram {
> > +	status = "okay";
> > +};
> > +
> > +&spi0 {
> > +	pinctrl-names = "default";
> > +	pinctrl-0 = <&spi0_pc_pins>;
> > +	status = "okay";
> > +
> > +	flash@0 {
> > +		compatible = "spi-nand";
> > +		reg = <0>;
> > +		spi-max-frequency = <40000000>;
> > +		#address-cells = <1>;
> > +		#size-cells = <1>;
> > +
> > +		partitions {
> > +			compatible = "fixed-partitions";
> > +			#address-cells = <1>;
> > +			#size-cells = <1>;
> > +
> > +			partition@0 {
> > +				label = "u-boot-with-spl";
> > +				reg = <0x0 0x100000>;
> > +			};
> > +
> > +			ubi@100000 {
> > +				label = "ubi";
> > +				reg = <0x100000 0x7f00000>;
> > +			};
> > +		};
> > +	};
> > +};
> > +
> > +&uart0 {
> > +	pinctrl-names = "default";
> > +	pinctrl-0 = <&uart0_pe_pins>;
> > +	status = "okay";
> > +};
> > +
> > +&usb_otg {
> > +	dr_mode = "peripheral";  
> 
> The patch description says the board has a USB Type-A port. Why is the
> USB controller set to peripheral mode?

It's a USB type-A *plug*, not a socket, because it's some TV stick
style of device, just with a USB instead of an HDMI plug.

Cheers,
Andre

> 
> > +	status = "okay";
> > +};
> > +
> > +&usbphy {
> > +	status = "okay";
> > +};  
> 