MSP_DMACR
reg_val_DMACR = readl(msp->registers + MSP_DMACR);
writel(reg_val_DMACR, msp->registers + MSP_DMACR);
reg_val_DMACR = readl(msp->registers + MSP_DMACR);
writel(reg_val_DMACR & ~RX_DMA_ENABLE, msp->registers + MSP_DMACR);
reg_val_DMACR = readl(msp->registers + MSP_DMACR);
writel(reg_val_DMACR & ~TX_DMA_ENABLE, msp->registers + MSP_DMACR);
writel(0, msp->registers + MSP_DMACR);