MCF_SDRAMC_SDCR_CKE
MCF_SDRAMC_SDCR_CKE |
writel(readl(MCF_SDRAMC_SDCR) & ~MCF_SDRAMC_SDCR_CKE,
writel(readl(MCF_SDRAMC_SDCR) | MCF_SDRAMC_SDCR_CKE,