Stefan Wahren [off-list ref] writes:

Hi Eric,

quoted

Eric Anholt [off-list ref] hat am 3. Januar 2017 um 19:27 geschrieben:


Stefan Wahren [off-list ref] writes:

quoted

Since the mmc module on bcm2835 neither provide a capabilities register nor 
free documentation we must rely on the downstream implementation [1].

Yeah, caps reg is wired to 0, but it can do high speed.

Since we're VDD_330 only, I'm not sure the driver type flags do
anything, but I'm still good with having consistency.

yes, the driver type flags currently have no benefit.

quoted

Reviewed-by: Eric Anholt <redacted>

Interested in porting over the DMA support? :)

AFAIK the sdhci doesn't support external DMA (required for bcm2835).
So DMA support would result in a new driver, which i'm currently not interested.

But i've prepared a fixup patch series for the sdhost driver i want to send to Gerd.

quoted

I also noticed that the emmc wrapper module claims it can run with a
clock from 50-100mhz, and the arasan says it can run at up to 50, 52, or
208mhz depending on SD/MMC mode.  Could we get a boost from running the
module at a higher clock rate?

Sorry, i can't follow. Do you mean DDR mode?

Apparently I what I was reading about was SDR104 mode, which also
requires 1.8V.
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