T95w2 box (S905W2 Experimental)

[sadptech]

Hello guys,

Wanted to ask why I get kernel panic no rootfs found then i boot from USB or microsd. Tried multiple SD cards and USB flash drives same kernel panic...

Box is s905w2 box is there a way to detect SD on boot and mount it automatically or manually?

[devmfc]

It can't find the rootfs partition. Looks like you have two usb flash drives in your box while booting? Remove all USB drives from the box before booting. Otherwise try to use root=/dev/sdb2 in your boot.config.

[sadptech]

ok for some reason it did not like usb flash and sd cards i tried sandisk and kingston....

with generic sd china it boot fast :D

sorry.. i did not think that sd card brand means something here omg...

anyway, image boots fine now, but it has no DE :( tried to install xfce sadly does work, im really newbie here..

if there is a way you can add xfce builds in future would be nice, or atleast some script to post install it :)

edit:
if there is an easy way i could extract dtb file from android somehow? and you could add this t95w box to supported list leds and sensors seem not work now :)

[devmfc]

I would expect the sp6330 to work... You could try to install the full firmware package via apt-get install firmware-linux. If that doesn't work you could try to see if dmesg complains about something... Otherwise report the output of the following command: ( vendev=( $( cat /sys/bus/mmc/devices/mmc2:*/{vendor,device} ) ) && echo "wifi SDIO ID: ${vendev[0]}:${vendev[1]}" )

There is no proper HDMI support for S904X/S905W2 in mainline, so desktop usage will not work.

Thanks for confirming multiboot does indeed work with CoreELEC, good to hear.

[ni-h]

Thanks for your reply. I installed the full firmware package but it did not change anything.

the command you suggested yielded no results:
tvbox:~#( vendev=( $( cat /sys/bus/mmc/devices/mmc2:*/{vendor,device} ) ) && echo "wifi SDIO ID: ${vendev[0]}:${vendev[1]}" ) cat: '/sys/bus/mmc/devices/mmc2:*/vendor': No such file or directory cat: '/sys/bus/mmc/devices/mmc2:*/device': No such file or directory

The full dmesg can be found here.
I thought there was nothing in the dmesg, but with respect to your suggested command, this line stands out(?):
[ 0.326559] mmc2: Failed to initialize a non-removable card

Is this where the wifi card is supposed to be initialised? Could the root of the cause be in the dtb?

[Adney]

I would expect the sp6330 to work... You could try to install the full firmware package via apt-get install firmware-linux. If that doesn't work you could try to see if dmesg complains about something... Otherwise report the output of the following command: ( vendev=( $( cat /sys/bus/mmc/devices/mmc2:*/{vendor,device} ) ) && echo "wifi SDIO ID: ${vendev[0]}:${vendev[1]}" )

wifi SDIO ID: 0x02d0:0x4330

[devmfc]

So very strange... Your box returns the SDIO ID, the other one doesn't... same box or not...?
But it can only retun an SDIO Id if the SDIO card is powered on. Can you post the dmesg after a fresh reboot? Because I have other boxes with a broadcom 4330 wifi module and they work fine....

[Adney]

This worked on the v6.1.57 kernel and did not work on later ones (v.6.6.1 -did not work...)

Either it turns out to detect emmc and write the OS to it (this is in versions starting from v6.6.1 ). Or it turns out to detect wifi (in versions 6.1.57 - v6.1.25), but I couldn't get it to work.

This box has a problem with the card reader, or the SD card settings in dtb. Almost no SD card allows you to boot. I have only one card that everything works with.

[dmotkan]

The problem with the card reader is most likely due to incorrect layout of the printed circuit board and the absence of power decoupling capacitors. Lots of interference. Therefore, only low-speed SD cards work.

HDMI output works on the latest builds

[Adney]

I tried the latest release 6.6.23 with the T95W2 Y4 configuration. The LED screen is working, but the wi-fi/bt chip is not detected. Then, based on this dtb (where the LED screen works), and another dtb where the wi-fi chip is determined, I assembled my dtb.
1meson-s4-t95w2.zip

Now I have a working LED display, and if I enter the command
( vendev=( $( cat /sys/bus/mmc/devices/mmc2:*/{vendor,device} ) ) && echo "wifi SDIO ID: ${vendev[0]}:${vendev[1]}" )
That is determined by the wi-Fi/bt chip:
wifi SDIO ID: 0x02d0:0x4330

But the wi-fi itself is still not working.

dmesg | grep brcm
[ 6.044672] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac4330-sdio for chip BCM4330/4
[ 6.050322] usbcore: registered new interface driver brcmfmac
[ 6.123218] brcmfmac mmc2:0001:1: Direct firmware load for brcm/brcmfmac4330-sdio.clm_blob failed with error -2

tvbox:~#vendev
wifi SDIO ID: 0x02d0:0x4330

tvbox:~#./wifi-connect.sh
Unknown device "/sys/class/net/wlan0": No such device
Connect to wifi network wlan0:
no wlan interface found

I need help!