On 6/16/20 5:39 PM, Tony Lindgren wrote:
* Oskar Enoksson <enok@xxxxxxxxxxxxxx> [200615 21:15]:
Hello all, sorry to bother, I'm urgently in need of some help/hints.
I'm trying to make wifi work on an Compulab CM-T3730, an old OMAP3 board
with WL1271 Wifi chip connected to an mmc via SDIO.
Everything works with the kernel supported by Texas Instruments 3.0.87 but I
need a newer kernel. There is a device tree file omap3-cm-t3730.dts in the
Linux mainline sourcees, but it doesn't work for me, the Wifi chip is not
detected on the SDIO bus. I'm using mainline linux 5.6.18, but I also tried
4.14, 4.9 and 3.16 with similar results.
What could be the problem?
Well it should work in general, maybe there's a regression somewhere.
I can confirm that cm-t3730 works with v5.3 at least, have not bothered
to update it for a while. Maybe you just need to update your firmware for
/lib/firmware/ti-connectivity for it?
Regards,
Tony
I tried replacing my own u-boot 2020.1 with Compulab's pre-compiled
u-boot 2014.1, no noticeable difference, still no wlan0. I just had to
set bootm_low, bootm_size and bootm_mapsize for the kernel bootm command
not to hang. (I'm not sure I understand which address settings are safe
and why, the ones below seems to work for me):
bootm_low=0x80004000
bootm_mapsize=0xf000000
bootm_size=0xf000000
...
loadaddr=0x8f000000
loadfdtaddr=0x8ff00000
I then tried re-compiling the kernel using omap2plus_defconfig without
any modifications (CONFIG_NETFILTER=y was already set). I used Yocto
with kernel 5.4.28. Still exactly the same results (no wlan0)
I then tried latest 5.3 kernel, to get as close as possible to Tony's
build, this time using a crosstool-ng toolchain. Exactly the same
results (no wlan0)
Firmware files are all there under /lib/firmware/ti-connectivity as far
as I can tell. cfg80211 finds regulatory.db. Files wl127x-fw-5*.bin and
wl128x-fw-5*.bin match the ones reported by "modinfo wl12xx", but there
is nothing indicating they are loaded when I do "modprobe wl12xx".
Could someone please share a /proc/config.gz from some working board
(with a recent kernel), just to eliminate the possibility of something
wrong there after all?
And - are you using the omap3-cm-t3730.dtb or the omap3-sbc-t3730.dtb?
This is extract from my console output at boot:
Starting HOSTAP Daemon: Configuration file: /etc/hostapd.conf
[ 15.884643] cfg80211: Loading compiled-in X.509 certificates for
regulatory database
[ 16.051849] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
Could not read interface wlan0 flags: No such device
nl80211: Driver does not support authentication/association or connect
commands
nl80211: deinit ifname=wlan0 disabled_11b_rates=0
Could not read interface wlan0 flags: No such device
nl80211 driver initialization failed.
wlan0: interface state UNINITIALIZED->DISABLED
wlan0: AP-DISABLED
wlan0: CTRL-EVENT-TERMINATING
hostapd_free_hapd_data: Interface wlan0 wasn't started
