SD card not detected properly in U-Boot about meta-intel-edison

[humanoid2050]

Allrighty. Pulled the latest gatesgarth. Built, compiled, flashed just fine. U-Boot and kernel both react properly to the SD card being inserted and removed!

[htot]

Thanks for testing @humanoid2050

[andy-shev]

To your last paragraph: U-Bott does not have a GPIO driver for Intel Tangier, that's why changing flags do nothing. But putting 'cd-inverted' into DTS should have an effect (as we exercised in #135 for cd_override_level).

[andy-shev]

It seems I have nailed down what's going on in U-Boot. The firmware sets the mode for SD CD pin to native (mode 1), while in Linux kernel we first switch it to mode 0 (GPIO). That's why U-Boot doesn't ignore its state.

TL;DR: please test these two patches (@htot drop anything in your tree except these two along with andy-shev/u-boot@20d551a84d7a, so you will have only three patches on top of upstream U-Boot) andy-shev/u-boot@87f693a followed by andy-shev/u-boot@c5cfab6.

[htot]

Sure. I see it might be worth upgrading U-Boot to 2021.10 in our image.

[andy-shev]

No response from the reporter @humanoid2050 and works for me, hence closing.

[htot]

For completeness I just tested these patches on Edison-Arduino. When SD card is not present:

=> ls mmc 1
Card did not respond to voltage select! : -110
Couldn't find partition mmc 1

When SD card is present:

=> ls mmc 1
            .disk/
            boot/
            casper/
            dists/
            EFI/
            install/
 1073741824   casper-rw
            pics/
            pool/
            preseed/
      134   autorun.inf
    18809   md5sum.txt
      229   README.diskdefines
  2501488   wubi.exe
    32256   ldlinux.sys
            syslinux/
 11015538   mb_bios_z490m_f20d.zip
            mb_bios_z490m_f20d/

7 file(s), 11 dir(s)

I didn't see any differences between booting with SD card inserted or not.

Other info:

=> fstype mmc 1
fat
=> fstypes
Supported filesystems: fat, ext4, btrfs
=> mmcinfo
Device: mmc@ff3fa000
Manufacturer ID: 2
OEM: 544d
Name: SD02G 
Bus Speed: 50000000
Mode: SD High Speed (50MHz)
Rd Block Len: 512
SD version 2.0
High Capacity: No
Capacity: 1.8 GiB
Bus Width: 4-bit
Erase Group Size: 512 Bytes

Seems to work fine on Edison-Arduino. I hope to force push later this evening. @humanoid2050 would you have time to test on your platform?

[humanoid2050]

I should be able to. I tried cobbling it together myself, but somehow I fixed uboot but broke kernel in a new way.

[htot]

force pushed to htot/master and htot/gatesgarth