* iMX6 SDR12 support
@ 2015-02-11 1:10 John Tobias
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From: John Tobias @ 2015-02-11 1:10 UTC (permalink / raw)
To: linux-mmc, Aisheng Dong
Hello All,
I have a new iMX6SL custom board with WiLink8 chipset. The chipset has
some features of SDIO 3.0 support and the I/O is 1.8v. I used the
mainline kernel 3.13 and 3.19, both of them detected it. But, the
problem is the voltage signaling is 3.3v and it should be 1.8v.
clock: 50000000 Hz
actual clock: 49500000 Hz
vdd: 7 (1.65 - 1.95 V)
bus mode: 2 (push-pull)
chip select: 0 (don't care)
power mode: 2 (on)
bus width: 2 (4 bits)
timing spec: 2 (sd high-speed)
--->>> signal voltage: 0 (3.30 V) <---> it should be 1.8v
I would like to know if there's any available patches out there that I
could use in order support SDR25?.
Regards,
John Tobias
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