Hello Douglas, I am once again looking at drivers/mmc/host/sdhci-of-arasan.c because SDR50 SD cards are malfunctioning on a new board. The only relevant difference between the two boards is the "clk_xin" frequency => 48 MHz before, 200 MHz now. Apparently, simply adding max-frequency = <60000000>; in the mmc DT node works around the issue, but I'd like to get to the bottom of it. sdhci_arasan_get_timeout_clock() returns pltfm_host->clk but IIUC, it's supposed to be a 6-bit field in the cap register. So 48 used to fit, but 200 would overflow... That would explain how capping at 60 MHz is a solution? Anyway, I'll keep digging, but I'd like to hear your thoughts. Regards. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
