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Re: sdio failure to initialize on warm boot.

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On 1/18/2018 6:50 PM, Kyle Evans wrote:
* Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>:
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




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