NEMC_NFCSR
writel(nfcsr, nemc->base + NEMC_NFCSR);
nfcsr = readl(nemc->base + NEMC_NFCSR);
writel(nfcsr, nemc->base + NEMC_NFCSR);
writel(0, nemc->base + NEMC_NFCSR);
nfcsr = readl(nemc->base + NEMC_NFCSR);