HCLR1
HCLR1(sc, SDHC_HOST_CTL, SDHC_LED_ON);
HCLR1(sc, GPIODIR, (1 << pin));
HCLR1(sc, I2C_I2SR, I2C_I2SR_IIF);
HCLR1(sc, I2C_I2CR, I2C_I2CR_MTX);
HCLR1(sc, I2C_I2CR, I2C_I2CR_TXAK);
HCLR1(sc, I2C_I2CR, I2C_I2CR_MSTA | I2C_I2CR_MTX);
HCLR1(sc, I2C_I2CR, I2C_I2CR_MSTA | I2C_I2CR_MTX);
HCLR1(hp, SDHC_HOST_CTL, SDHC_DMA_SELECT);
HCLR1(hp, SDHC_HOST_CTL, SDHC_DMA_SELECT);
HCLR1(hp, SDHC_HOST_CTL, SDHC_HIGH_SPEED);
HCLR1(hp, SDHC_HOST_CTL, SDHC_LED_ON);