RTW_BRSR
RTW_WBW(regs, RTW_MSR, RTW_BRSR);
RTW_WRITE16(regs, RTW_BRSR, RTW8185_BRSR_MBR_2MBPS);
RTW_WRITE16(regs, RTW_BRSR, RTW8180_BRSR_MBR_2MBPS);
RTW_SYNC(regs, RTW_BRSR, RTW_BRSR);