> If I understand correctly, > VMMC(Always on 3.3V) for card detection -->PWEN pin > Vqmmc(1.8v-3.3V) for UHS operation for voltage switch-->IOVS pin If these assumptions are correct, then I am sorry to have missed it. I thougaht PWEN is for vqmmc. If it is not, then we need two regulators, one for vmmc and one for vqmmc. This is what the TMIO core expects and already handles correctly on its own, or? Except for the reset handling where we need to preserve some value in the SDHI core.
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