On 8 June 2015 at 10:37, Ulf Hansson [off-list ref] wrote:

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   Can you test this patch  on imx SoC ?

(Your email have some format issue.)

Yeah missed to sent in plain text mode.

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I have tested this patch and it does not break imx SoC.
You can add my tag.
Tested-by: Dong Aisheng <redacted>

Thanks Dong !!

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However, it looks to me SDHCI_CAN_VDD_180 is only indicating the host VDD
capabiliies, not IO voltage capability.

I think Dong is correct. I don't think SDHCI_CAN_VDD_180 is not

/s /is not /is

related to UHS modes at all.

At least the name of the field (SDHCI_CAN_VDD_180) indicates it's
about VDD/VCC, the core power and not the IO voltage.

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Are you sure on this ?? If SDHCI host VDD is  1.8V then the cards are
also capable to operate at 1.8V ? Didn't understand what you mean by
IO voltage capability

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SD3.0 cards require 1.8v IO voltage support.
So should this bit affect SD3.0 support?

The preset value resgister says that  SDR modes requires 1.8V and we
disable the modes based on capability or quirk.

It requires 1.8V *IO voltage*, not VDD/VCC.

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Kind regards
Uffe