SD card not available on T31N

[Slusko88]

Installed openIPC on my camera([Xiaomi MJSXJ03HL) but I am unable to access SD card.

I have tried gpio clear 54 procedure as well as rebooting with and without SD card inserted.

In dmesg output I have noticed that there is some problem with mmc initialization.

`

[ 1.440648] [resetd] GPIO undefined in /usr/sbin/resetd
[ 2.104820] mmc0: host doesn't support card's voltages
[ 2.104835] mmc0: error -22 whilst initialising SDIO card
[ 2.123575] mmc0: host doesn't support card's voltages
[ 2.123591] mmc0: error -22 whilst initialising MMC card
[ 2.245693] mmc0: host doesn't support card's voltages
[ 2.245709] mmc0: error -22 whilst initialising SDIO card
[ 2.264091] mmc0: host doesn't support card's voltages
[ 2.264109] mmc0: error -22 whilst initialising MMC card
[ 2.385695] mmc0: host doesn't support card's voltages
[ 2.385713] mmc0: error -22 whilst initialising SDIO card
[ 2.404029] mmc0: host doesn't support card's voltages
[ 2.404045] mmc0: error -22 whilst initialising MMC card

`
Here is complete dmesg output.
dmesg_output.txt

[themeadery]

I have similar errors on Wyze cam V3 which is T31X I believe.

[themeadery]

It seems getting into uboot by pressing ctrl-c quickly after power up, then issuing gpio set 57; gpio clear 57 then boot will fix the sd card reader (and also fixed my wlan).

[darkfuncat]

You can also refer to this issue : OpenIPC/device-mjsxj03hl#15 (comment)
The workaround to manualy do gpio commands at boot works but now it will be great to have this done automaticaly.
To be honest I dont know who could handle this and how (modifiy bootloader ? is it possible ?)
I tried to download and compile firmware (not bootloader) to test but it is very complicated for me.

[themeadery]

@gtxaspec Can you commit this to our uboot and trigger a compile/release?

[gtxaspec]

@themeadery there are several issues regarding GPIOs on the Ingenic platform in OpenIPC as a whole, involving both u-boot and the linux kernel. I'm taking a look at them with some other devs, it will take some time to make some proper changes.

[themeadery]

Awesome. I kinda figured you were working on a cleaner fix. Thx

[Slusko88]

I managed to get sd card to work by running these commands:

gpio clear 54

echo "INSERT" > /sys/devices/platform/jzmmc_v1.2.0/present

After this sd card should be mounted under /mnt dir.