From: Li Yang <le...@freescale.com> Date: Fri, 26 Nov 2010 17:29:58 +0800
> In commit 58933c64(ucc_geth: Fix the wrong the Rx/Tx FIFO size), > the UCC_GETH_UTFTT_INIT is set to 512 based on the recommendation > of the QE Reference Manual. But that will sometimes cause tx halt > while working in half duplex mode. > > According to errata draft QE_GENERAL-A003(High Tx Virtual FIFO > threshold size can cause UCC to halt), setting UTFTT less than > [(UTFS x (M - 8)/M) - 128] will prevent this from happening > (M is the minimum buffer size). > > The patch changes UTFTT back to 256. > > Signed-off-by: Li Yang <le...@freescale.com> > Cc: Jean-Denis Boyer <jdbo...@media5corp.com> > Cc: Andreas Schmitz <andreas.schm...@riedel.net> > Cc: Anton Vorontsov <avoront...@ru.mvista.com> Applied, thank you. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
