DMA_CLK_CTRL
LPC32XX_DEFINE_GATE(DMA, DMA_CLK_CTRL, 0, 0),
WREG32(DMA_CLK_CTRL + offset, 0x00000100);
orig = data = RREG32(DMA_CLK_CTRL + offset);
WREG32(DMA_CLK_CTRL + offset, data);