CPSW_SL_MACCONTROL
[CPSW_SL_MACCONTROL] = 0x04,
val = cpsw_sl_reg_read(sl, CPSW_SL_MACCONTROL);
cpsw_sl_reg_write(sl, CPSW_SL_MACCONTROL, val);
val = cpsw_sl_reg_read(sl, CPSW_SL_MACCONTROL);
cpsw_sl_reg_write(sl, CPSW_SL_MACCONTROL, val);
cpsw_sl_reg_write(sl, CPSW_SL_MACCONTROL, 0);
[CPSW_SL_MACCONTROL] = 0x04,
[CPSW_SL_MACCONTROL] = 0x04,
[CPSW_SL_MACCONTROL] = 0x00,