PDC_CTCR1
ctcr1 = ioread32(dev_mmio(ap, adev, PDC_CTCR1));
iowrite32(ctcr1, dev_mmio(ap, adev, PDC_CTCR1));
ctcr1 = ioread32(dev_mmio(ap, adev, PDC_CTCR1));
iowrite32(ctcr1 & ~(1 << 7), dev_mmio(ap, adev, PDC_CTCR1));
ctcr1 = ioread32(dev_mmio(ap, adev, PDC_CTCR1));
iowrite32(ctcr1, dev_mmio(ap, adev, PDC_CTCR1));
u32 ctcr1 = ioread32(dev_mmio(ap, dev, PDC_CTCR1));
iowrite32(ctcr1, dev_mmio(ap, dev, PDC_CTCR1));