Re: sdio failure to initialize on warm boot.

[Arend van Spriel <arend.vanspriel@broadcom.com>]

On 1/18/2018 6:50 PM, Kyle Evans wrote:
> * Arend van Spriel <arend.vanspriel@broadcom.com>:
>> On 1/12/2018 9:18 PM, Kyle Evans wrote:
>>> 2) After reboot I get this nasty error...
>>> [    0.000000] Kernel command line: console=tty0 selinux=0
>>> video=1280x800 root=/dev/mmcblk1p1 brcmfmac.bebug=0x20000
>>> [    2.269750] mmc0: Invalid maximum block size, assuming 512 bytes
>>> [    2.330010] mmc0: SDHCI controller on c8000000.sdhci [c8000000.sdhci]
>>> using ADMA
>>> [    2.645242] mmc0: error -110 whilst initialising SDIO card
>>
>> Ok. I suppose you mean a warm reboot. So I suppose the card is not
>> properly power cycled. If your SDHCI controller driver (is it
>> sdhci-acpi?) is loaded as a module, you could try to unload it and load
>> it again. Let me know if that works for you to confirm my guess.
>
> Your guess is correct. The following brings up wifi after failure to do
> so during warm boot.
>
> modprobe -r sdhci-tegra; modprobe sdhci-tegra;

Do you know if your uses a device tree and where I can find it? 
Typically, there is a GPIO to the wifi device that needs to be toggled 
using mmc powerseq.

Regards,
Arend