Re: 2017-06-20-netbsd-raspi-earmv6hf.img

[mlelstv%serpens.de@localhost (Michael van Elst)]

john%ziaspace.com@localhost (John Klos) writes:

>We know that SDR50 mode works with many, perhaps most, cards under NetBSD. 

SDR25 is a UHS mode (50MHz, 25MByte/s) and is specified for 1.8V signaling.
The pi however can only do 3.3V signaling.

SDR50 is a UHS mode (100MHz, 50MByte/s) and is specified for 1.8V signaling.
The pi however can only do 3.3V signaling.

HS is a pre-UHS mode and is specified for 3.3V signaling, the pi supports it
for up to 50MHz (25MByte/s). This is performance-wise like SDR25.

Maybe you can get some combination of pi+card to work with 100MHz
and 3.3V signaling. But that's out of spec.

-- 
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                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."