SPIFC_A1_USER_CTRL3_REG
writel(0, spifc->base + SPIFC_A1_USER_CTRL3_REG);
u32 val = readl(spifc->base + SPIFC_A1_USER_CTRL3_REG);
writel(val, spifc->base + SPIFC_A1_USER_CTRL3_REG);