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Date:   Mon, 22 Jun 2020 08:28:25 -0700
From:   Tony Lindgren <tony@atomide.com>
To:     Oskar Enoksson <enok@lysator.liu.se>
Cc:     "H. Nikolaus Schaller" <hns@goldelico.com>,
        linux-omap@vger.kernel.org
Subject: Re: WL1271 on CM-T3730
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* Oskar Enoksson <enok@lysator.liu.se> [200621 22:01]:
> Correction: occasionally wl1271_sdio initialization still fails with error
> messages such as
> 
> [   46.961364] wl1271_sdio: probe of mmc1:0001:1 failed with error -16
> [   46.967834] wl1271_sdio: probe of mmc1:0001:2 failed with error -16
> 
> other times
> 
> [   27.302215][  T903] wl1271_sdio mmc1:0001:2: wl12xx_sdio_power_on: failed
> to get_sync(-22)
> 
> or
> root@pte2000:~# ifup wlan0
> [   53.799468][ T2420] wl1271_sdio mmc1:0001:2: wl12xx_sdio_power_on: failed
> to get_sync(-110)
> [   53.840118][ T2420] wl1271_sdio mmc1:0001:2: wl12xx_sdio_power_on: failed
> to get_sync(-22)
> [   53.879882][ T2420] wl1271_sdio mmc1:0001:2: wl12xx_sdio_power_on: failed
> to get_sync(-22)
> [   53.888610][ T2420] wlcore: ERROR firmware boot failed despite 3 retries
> RTNETLINK answers: Invalid argument
> ifup: failed to bring up wlan0

Maybe try changing the wl12xx_vmmc2 startup-delay-us to something
higher like 70000 we usually have?

Regards,

Tony