PA_IVDRCTL
__raw_writew(__raw_readw(PA_IVDRCTL) | (1 << IVDR_CK_ON), PA_IVDRCTL);
__raw_writew(__raw_readw(PA_IVDRCTL) & ~(1 << IVDR_CK_ON), PA_IVDRCTL);
__raw_writew(__raw_readw(PA_IVDRCTL) | 0x01, PA_IVDRCTL); /* Si13112 */