Issue 95669: In the Cyclone® V SoC (SE, ST and SX) pin-out files with Revision 1.1 and lower, the SD/MMC clock pins are incorrectly labelled. You will notice the name mismatch between the pin-out file and Cyclone V Device Family Pin Connection Guidelines (PDF). In the Pin Connection Guidelines, the clock pins are named SDMMC_FB_CLK_IN and SDMMC_CCLK_OUT. However, the pin-out file uses outdated name as SDMMC_CLK_IN and SDMMC_CLK.
When you cross reference the pin names from pin-out file to PCG, relate SDMMC_CLK_IN to SDMMC_FB_CLK_IN and SDMMC_CLK to SDMMC_CCLK_OUT.