Voltage for vcc/vccq is supplied on some of our boards for SD using either a dedicated voltage supply at 3.3v.
The SD controller indicates in the capability1 register (caps[1]) that UHS is supported but since 1.8v is not available in practice there is no support. There are two ways I can see to solve this problem a) allow caps[1] to be passed in (like caps[0]) is today via a quirk) and have the caller to sdhci_add_host() just clear the bits for UHS support. b) define a new quirk that indicates UHS is not supported. I favor a) but wanted the list to have a chance to respond if there is a preference. Philip-- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
