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clock vs actual_clock in mmc(imx8qxp)

Question asked by wasim nazir on Mar 31, 2020
Latest reply on Mar 31, 2020 by igorpadykov



Why the clock and actual clock is different in mmc for imx8qxp?


# cat /sys/kernel/debug/mmc0/ios
clock: 200000000 Hz
actual clock: 166666666 Hz
vdd: 21 (3.3 ~ 3.4 V)
bus mode: 2 (push-pull)
chip select: 0 (don't care)
power mode: 2 (on)
bus width: 3 (8 bits)
timing spec: 10 (mmc HS400)
signal voltage: 1 (1.80 V)
driver type: 0 (driver type B)



Is it possible to increase actual_clock and will it help in increasing the speed of mmc?



Thanks in Advance,