Thread:Talk:R-Car/Boards/M3SK/Booting of kernel stops at 23.047503 mmc0: error -110 whilst initialising MMC card (5)/reply

Could you try the followings?

- Can you access your SD card(partition 1 = rootfs) from a PC?

- Try with the latest BSP(Yocto v3.15.0).

- Format the SD card and try again.

- Try with another SD card.