Hello Mark, On 08/22/2014 08:30 PM, Mark Brown wrote: > >> The problem is that one of these regulators is used as the vqmmc-supply >> (VCCQ/VDD_IO) so the mmc host controller driver disables it on >> MMC_POWER_OFF. Now AFAIK (Yuvaraj can correct me what I got wrong) this >> shouldn't be an issue since on card detection, the vqmmc supply should be >> enabled again but on Exynos the built-in card detect line is on the same >> power rail as vqmmc. That means that disabling the regulator prevents card >> insertions to be detected. > > If the MMC host controller needs a supply enabling in order to do card > detection and it's supposed to be doing card detection I'd expect it to > be enabling that supply. Why is it not doing that? >
Good question. I'm not that familiar with the dw_mmc host controller nor its driver implementation so I'll let Yuvaraj or Doug to answer that. Best regards, Javier -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
