On 7/30/23 13:54, Martin Blumenstingl wrote:
I have a few questions here:
- is the wlan0 interface present?
- does "$ ip link set up dev wlan0" do anything?
- does "$ iw dev wlan0 scan" work?
Also do we know more about the host (e.g. which MMC/SDIO host driver
is involved)?
Martin,
No, wlan0 is not set up. Anything referencing it will fail.
I have asked about the MMC/SDIO host, but the OP never responded to that
question. The OP is an engineer, and not the best with software. His dmesg
output lists the following:
mmc0: SDHCI controller on e0100000.mmc [e0100000.mmc] using ADMA
mmc1: SDHCI controller on e0101000.mmc [e0101000.mmc] using ADMA
sdhci-arasan e0101000.mmc: card claims to support voltages below defined range
That last line would indicate the pci-arasan controller. If that is not
sufficient, how would we get that info?
The CPU is a Cortex-A9 dual-processor unit, and he is running Linux version
5.4.0-xilinx (oe-user@oe-host). Dmesg also reports
CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d
If you want to eliminate the middle man and ask the OP questions directly, the
GitHub thread is
https://github.com/lwfinger/rtl8723ds/issues/41#issuecomment-1656990344
I have tried to get some logging of the SDIO traffic to see if I can find
differences between the vendor and rtw88 drivers. Thus far, I have not made much
progress.
One thing he has noted is that the LDO with the vendor driver is 1.25 V, but
that rtw88 has it as low as 0.82 V. On one occasion, it was 1.22, but that made
no difference.
Larry
