CPU_WRITEBACK_CTRL_REG
[CPU_WRITEBACK_CTRL_REG] = 0x22c,
[CPU_WRITEBACK_CTRL_REG] = 0x20,
reg = cbc_readl(CPU_WRITEBACK_CTRL_REG);
cbc_writel(reg, CPU_WRITEBACK_CTRL_REG);
[CPU_WRITEBACK_CTRL_REG] = -1,
[CPU_WRITEBACK_CTRL_REG] = -1,