SDHC_BUS_POWER
SDHC_READ(sc, SDHC_HOST_CTL) | SDHC_BUS_POWER << 8);
~(SDHC_BUS_POWER | (SDHC_VOLTAGE_MASK << SDHC_VOLTAGE_SHIFT));
(vdd << SDHC_VOLTAGE_SHIFT) | SDHC_BUS_POWER);
reg |= SDHC_BUS_POWER;
if (!ISSET(HREAD1(hp, SDHC_POWER_CTL), SDHC_BUS_POWER)) {