From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 10 Sep 2002 07:58:43 -0700 From: Tom Rini To: Adrian Cox Cc: linuxppc-embedded@lists.linuxppc.org Subject: Re: Caching in the MPC107 Message-ID: <20020910145843.GB797@opus.bloom.county> References: <1031581408.30396.81.camel@newt> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1031581408.30396.81.camel@newt> Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: On Mon, Sep 09, 2002 at 03:23:24PM +0100, Adrian Cox wrote: > I've just been debugging an interesting problem with a new board that > uses a MPC107 bridge with a 7445 processor. The symptoms were that the > ethernet device never saw updated transmit descriptors unless another > bus master was active in the system. [snip] > My current thinking is to produce a patch which introduces a new option: > CONFIG_CACHING_HOSTBRIDGE which boards combining the MPC107 and the > MPC7450 can set. This will probably be needed for Motorola's Valis or > Gyrus PMCs. Are there any more details you can give? I've got a Sandpoint X3 and Valis (with a 7455 CPU), and aside from the MPC107 Errata #18 problem (http://e-www.motorola.com/brdata/PDFDB/docs/MPC107CE.pdf) which is now fixed, I haven't seen any problems here. Do you have access to this board and a 7455? -- Tom Rini (TR1265) http://gate.crashing.org/~trini/ ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/