WhyCan Forum(哇酷开发者社区)

Hi everyone,

Does anyone have the schematic for this A33 board ?

I'm trying to boot mainline u-boot and Linux on it but can't even figure out where the chip detect pin for MMC is.

I'd be very grateful if anyone shared any info they have on this board.

Thanks,
Brandon

I've been unsuccessfully trying to expose the Lichee Nano as an MTP device to  a Linux Host using https://github.com/viveris/uMTP-Responder. First tried using GadgetFS and then FunctionFS. I'm using Icenowy's 4.15 kernel.

uMTPrd config
umtprd.conf.txt

Startup script
umtprd.conf.txt

Startup log

Linux .config config.txt

Has anyone had similar issues or gotten this to work?? Any help would be much appreciated

Hi everyone,

I was wondering if anyone has gotten the S070WV20-CT16 7" display panel to work on the BPI-M2 Magic using the mainline linux kernel (i.e non-sunxi kernel). I would be most grateful if that person could share the modifications they made to the mainline devicetree for this board.

Sincerely,

Brandon

Hi everyone,

I'm trying to build a rootfs for the Nano following the instructions at http://nano.lichee.pro/build_sys/rootfs.html. However in trying to dowload the .config file I get a 403 error from the server. I'm stuck and was wondering if anyone has this file lying around or knows of a mirror.

Thanks in advance.

Hi y'all,

I built and sdcard image for the Lichee Pi Nano using the buildroot image at https://github.com/florpor. However on booting with the flashed sdcard

U-Boot SPL 2018.01-05679-g013ca457fd-dirty (Aug 02 2019 - 09:57:28) DRAM: 32 MiB Trying to boot from MMC1

and it hangs indefinitely. I would be very grateful for any ideas

Hi everyone,

I can't seem to get spi1 on the  f1c200s to work. My board is the MangoPi R3.  Was wondering if anyone had configured a device for the second SPI controller before.

Here are the additions I made to the file here,

&pio {
	spi1_pins: spi1-pins {
		pins = "PE9", "PE7", "PE10", "PE8";
		function = "spi1";
	};
			
	spi1_cs_pins: spi1-cs-pins {
        pins = "PE7";
        function = "gpio_out";
	};
};


&spi1 {
	status = "okay";
	
	pinctrl-names = "default";	
	pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
	num_chipselect = <1>;
	cs-gpios = <&pio 4 7 GPIO_ACTIVE_HIGH>;
	
	spidev@0 {
            compatible = "spidev";
            reg = <0>;   
            spi-max-frequency = <0x2625a00>;
   	};
};

Loopback tests with this code work. So it looks like the issue may be the chip select (PE7) ??. The device I'm trying to connect to the board is the RFID-MFRC522.

Any help with very much appreciated.

Hi everyone,

I recently just built flashed the r3 with a nand image, using the sources from this repo.

cat /lib/modules/5.4.99/modules.builtin | grep spi 

  confirms the presence of the spidev module. However there isn't any

/dev/spi*

file.  Looking at the contents of the file 'board/widora/mangopi/r3/devicetree/linux/devicetree.dts' I only find the device node for the first SPI controller (spi0) with child nodes spi-nor & spi-nand and none for the second SPI controller (spi1 ?). Do I need add another SPI device node to these file?? or is there something I'm missing??

Any help would be much appreciated