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    SubjectRe: MMC: Make the configuration memory resource optional
    Hi all,

    Could all non-MFD users of tmio-mmc please ensure that the following is
    actually true on your hardware?

    mmc->f_max = pdata->hclk;
    mmc->f_min = mmc->f_max / 512;

    According to all the data I have, the smallest divider setting of 0x100
    is /2 and only MFD controllers with the CNF area can select no-divider mode.

    this would mean that non-MFD chips should be doing:

    mmc->f_max = pdata->hclk / 2;
    mmc->f_min = pdata->hclk / 512;


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