Recent posts

#71

A64 / eth0 disappears

Last post by frm - November 22, 2025, 02:15:28 AM

Hi all,
I just unboxed my shiny new A64, imaged with the "A64-OLinuXino-bullseye-base-20231106-081613.img" image (stored on SD card).
I do have also the MOD-WIFI-RTL8188EUS-ANT part, so I expect to have 2 ethernet interface: the wired RJ45 eth interface and the wireless one.

Surprisingly, the first one is what's giving me troubles (wired Eth interface).
On the first boot I actually did have "eth0". Then I think I rebooted after reading a message about the DTS tree initial setup being completed (IIRC).
After reboot eth0 was disappeared. I read some thread about Eth interface being multiplexed with the LCD display so I used the "olinuxino-display" utility to set LCD mode to DISABLED. Reboot. Eth0 was there.

Now after another reboot eth0 is gone again.
I tried again to set LCD to DISABLED with "olinuxino-display" and rebooted. Eth0 is still not there.
This is what I see in kernel log:

Code Select Expand

# dmesg | grep -i ethernet
[    1.309067] dwmac-sun8i 1c30000.ethernet: IRQ eth_wake_irq not found
[    1.309076] dwmac-sun8i 1c30000.ethernet: IRQ eth_lpi not found
[    1.309490] dwmac-sun8i 1c30000.ethernet: PTP uses main clock
[    1.309513] dwmac-sun8i 1c30000.ethernet: Current syscon value is not the default 1806 (expect 0)
[    1.309782] dwmac-sun8i 1c30000.ethernet: No HW DMA feature register supported
[    1.309790] dwmac-sun8i 1c30000.ethernet: RX Checksum Offload Engine supported
[    1.309797] dwmac-sun8i 1c30000.ethernet: COE Type 2
[    1.309803] dwmac-sun8i 1c30000.ethernet: TX Checksum insertion supported
[    1.309809] dwmac-sun8i 1c30000.ethernet: Normal descriptors
[    1.309816] dwmac-sun8i 1c30000.ethernet: Chain mode enabled
[    1.418776] dwmac-sun8i 1c30000.ethernet: EMAC reset timeout
[    1.424451] dwmac-sun8i 1c30000.ethernet eth0: stmmac_dvr_remove: removing driver
[    1.440228] dwmac-sun8i: probe of 1c30000.ethernet failed with error -110

my kernel is:

Code Select Expand

# uname -a
Linux viesmann-olinuxino 5.10.180-olimex #092646 SMP Tue Jul 25 09:28:50 UTC 2023 aarch64 GNU/Linux

is this a known issue?

#72

A20 / Re: A20-OLinuXino-MICRO ILITEK...

Last post by Globici - November 21, 2025, 09:23:37 PM

It seems like

Code Select Expand

  olimage.core.setup.kernel:
    modules:
      blacklist:
        - sun4i_gpadc_iio
        - sun4i_gpadc
      enable:
        - g_serial
        - sun4i_ts
        - ili210x
should work but it doesn't.

If I rebuild the kernel with the driver would it work ?

#73

Neo6502 / Re: Trouble flashing firmware ...

Last post by LubOlimex - November 21, 2025, 11:17:50 AM

Which USB connector and what USB cable do you use? You need USB type C for powering and USB type A for downloading new software, cable like this:

https://www.olimex.com/Products/Components/Cables/USB/USB-CABLE-AM-AM/

You disconnect the power supply USB-C cable, then press the BOOT button and plug the USB-A cable to USB host connector. Your computer will show a new drive. Once this new drive shows copy the .uf2 file to it. Once the firmware is programmed the drive will disappear. This means the RP2040 now has the new firmware loaded.

#74

Neo6502 / Trouble flashing firmware on N...

Last post by alicesphere - November 21, 2025, 10:36:44 AM

Hi everyone,
I'm new to the Olimex retro boards and just started working with the Neo6502. I'm trying to flash new firmware through the USB interface, but the upload fails halfway with a timeout almost every time.

I've followed the instructions from the Neo6502 resources page and tried different USB cables and ports, but no change. The board powers on normally and the bootloader seems to start, but the flashing process never completes.
wheelie life
Has anyone experienced unreliable USB flashing on the Neo6502? Is there a known issue with certain host OS versions? Should I be using a specific baud rate or tool version? Would flashing via SWD be more stable?

Any tips would be really appreciated. Thank you!

#75

NXP / Re: Mainline buildroot / iMX8M...

Last post by mike105105 - November 20, 2025, 10:18:52 PM

I mean, just look at the dts section I pasted.  The phy reset gpio is being set to gpio4 02, but the pinctrl for it is specifying gpio4 22. The node for the other ethernet is swapped as well.  The correct gpio is specified in the pinctrl, but the wrong one is specified for the reset.  They are each set to the others reset gpio.

Michael

#76

A20 / A20-OLinuXino-MICRO ILITEK 211...

Last post by Globici - November 20, 2025, 05:25:30 PM

Hi, I am using Linux a20-olinuxino 5.10.180-olimex #140708 SMP Fri Dec 22 14:08:29 UTC 2023 armv7l GNU/Linux on my A20-OLinuXino-MICRO REV. L but I can't find a way of adding support for the ILITEK 211706000 Touchscreen driver.

Can you please guide me on how to install the driver ?

Some details :
=== Operating System ===
Name: Debian GNU/Linux
Version: 11 (bullseye)
ID: debian
VERSION_ID: 11

LSB Information:
Distributor ID:   Debian
Description:   Debian GNU/Linux 11 (bullseye)
Release:   11
Codename:   bullseye

=== Kernel Information ===
Kernel Version: 5.10.180-olimex
Kernel Release: #140708 SMP Fri

Thanks in advance !

#77

NXP / Re: Mainline buildroot / iMX8M...

Last post by LubOlimex - November 20, 2025, 08:22:08 AM

Sorry can you elaborate further? I am not sure if I understand the problem clearly. They are GPIOs how can these be swapped?

#78

NXP / Re: Mainline buildroot / iMX8M...

Last post by mike105105 - November 19, 2025, 04:52:42 PM

There seems to be an issue with every dts patch I have found for this board, even the one in the olimex buildroot-imx repo. The ethernet reset GPIOs are swapped between the 2 interfaces.  For example, buildroot-imx/board/olimex/imx8mp/linux/0001-dts-add-imx8mp-olimex.patch:

Code Select Expand

&eqos {
    pinctrl-names = "default";
    pinctrl-0 = <&pinctrl_eqos>;
    phy-mode = "rgmii-id";
    phy-handle = <&ethphy0>;
        phy-reset-gpios = <&gpio4 02 GPIO_ACTIVE_LOW>;
        .
        .
        .
pinctrl_eqos: eqosgrp {
        fsl,pins = <
            .
                        .
                        .
            MX8MP_IOMUXC_SAI2_RXC__GPIO4_IO22        0x19
        >;
    };

I was wondering why my yocto build only had 1 ethernet port come up, the patch I was using was messed up slightly different and managed to have the second ethernet configured close enough to work.

#79

A64 / Re: PE16/POWERON PIN with 1k r...

Last post by LubOlimex - November 19, 2025, 10:37:03 AM

Why didn't you just solder wires to the pads of the reset button. Just add wire at each side of the button and add a second button at the box...

Measure between the pads of R28 of continuality and see if there is connection.

#80

A64 / Re: PE16/POWERON PIN with 1k r...

Last post by mauricio - November 18, 2025, 06:14:12 PM

Hello. Thanks for your response.

Really I wanted to export that button to my outer box, that will be a container for my A64. So I can turn it on and off.

Well, by now I just removed the 1K resistor R28 and pressing the on board pwr01 button, the shutdown behavior returns.

Please any advice on getting this functionality working, will be appreciated.

Thanks