4 messages, 4 authors, 2001-10-24 · open the first message on its own page
From: Kári Davíðsson <hidden>
Date: 2001-10-24 18:50:20
Hi, Are there any known issues regarding the I2C patch and the ethernet driver? If I disable the microcode patch everything works fine, except the I2C stuff. I am using the linuxppc_2_4_devel tree ported to our custom board with ehternet on SCC2. Regards, K.D. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
From: Der Herr Hofrat <hidden>
Date: 2001-10-24 19:02:07
Hi, Are there any known issues regarding the I2C patch and the ethernet driver? If I disable the microcode patch everything works fine, except the I2C stuff. I am using the linuxppc_2_4_devel tree ported to our custom board with ehternet on SCC2. Regards,
there might be - the dual-ported RAM of the CPM is quite limited and the micro-code goes in there - might be that the BD's for the SCC/ethernet are overlapping ?? hofrat ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
From: Peter Desnoyers <hidden>
Date: 2001-10-24 19:06:31
The I2C driver doesn't work properly with the microcode patch - it initializes tbptr and rbptr to 0, not r_tbase and r_rbase, and it uses the INIT_TRX command (which the patched code doesn't support) instead of separate INIT_RX and INIT_TX. You might want to try the attached minor patch, which works for us. -- ..................................................................... Peter Desnoyers (781) 457-1165 pdesnoyers@chinook.com Chinook Communications (617) 661-1979 pjd@fred.cambridge.ma.us 100 Hayden Ave, Lexington MA 02421
From: Dan Malek <hidden>
Date: 2001-10-24 19:38:23
Kári Davíðsson wrote:
Are there any known issues regarding the I2C patch and the ethernet driver?
You need to ensure the patch is suitable for the CPM on the processor you have. I know the USB SOF patch works on the 823/850 Rev. B processors, but I don't remember where the others came from. You should probably visit Motorola's web site and get the patch specific to your processor and update the microcode patch file.
If I disable the microcode patch everything works fine, except the I2C stuff.
Depending upon the application, sometimes it is easier and faster to simply use the software toggle agorithm on the pins rather than the CPM controller. -- Dan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/