Alex Zhao b59b1c0040 mmc: add a file to debugfs for changing host max clock at runtime ... Usage is as follows: rk3566_rgo:/ # cat /sys/kernel/debug/mmc1/max_clock 150000000 rk3566_rgo:/ # echo 200000000 > /sys/kernel/debug/mmc1/max_clock rk3566_rgo:/ # cat /sys/kernel/debug/mmc1/max_clock 200000000 rk3566_rgo:/ # echo 200000000 > /sys/kernel/debug/mmc1/clock rk3566_rgo:/ # dmesg -c [ 285.884348] mmc_host mmc1: Bus speed (slot 0) = 198000000Hz (slot req 200000000Hz, actual 198000000HZ div = 0) Signed-off-by: Alex Zhao <zzc@rock-chips.com> Change-Id: I7ac9649b231c50b0c6c066407e28954e8c94510c		2021-01-06 15:18:42 +08:00
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core	mmc: add a file to debugfs for changing host max clock at runtime	2021-01-06 15:18:42 +08:00
host	Merge tag 'ASB-2020-12-05_4.19-stable' of https://android.googlesource.com/kernel/common	2020-12-29 16:10:48 +08:00
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