REG_ENCCK
cck_enable = rtw_read32(rtwdev, REG_ENCCK) & BIT_CCK_BLK_EN;
rtw_write32_clr(rtwdev, REG_ENCCK, BIT_CCK_OFDM_BLK_EN);
rtw_write32_set(rtwdev, REG_ENCCK, BIT_CCK_OFDM_BLK_EN);