Sdhci-tegra sdhci-tegra.2: Tuning done, restoring the best tap value

[WayneWWW]

Please check if you have all the patches here.

Jetson nano SD card can use,but kernel prompt error

Hello, The basic device tree change for enabling sdmmc3 https://forums.developer.nvidia.com/t/microsd-card-not-detected-on-jetson-nano-production-module/80776/14 If you notice the mmc speed is slow, please try this patch. https://forums.developer.nvidia.com/t/slow-sd-card-access-speed-read-write-with-jetson-nano-production-module/111749/31 Some other forum users notice if tring warm boot, the speed becomes slow again. Turns out this patch is also needed in kernel https://forums.devel…

If you have them, then there is probably hardware design problem on the board