Jerome Brunet <jbrunet@xxxxxxxxxxxx> writes: > It seems that the signal clock is also used and required, somehow, by > the controller it self. > > It is shown during init, when writing to CFG while the divider is set > to 0 will crash the SoC. During voltage switch, the controller may crash > and the card may then fail to exit busy state if the clock is stopped. > > To avoid this, it is best to keep the clock running for the controller, > except during rate change. However, we still need to be able to gate > the clock out of the SoC. Let's use the pinmux for this, and fallback > to gpio mode (pulled-down) when we need to gate the clock > > Signed-off-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx> Curious "feature" of the IP, but the solution looks good to me. Reviewed-by: Kevin Hilman <khilman@xxxxxxxxxxxx> Kevin -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
