The version of CPU I has requires the patch to solve the conflict between the ram parameters of I2C/SPI and those of Ethernet. I checked my version against the errata at Motorola's website and it is required.
If I don't use the relocation then the command has not effect. If I use the patch then there are i2c transaction being generated but I can only use certain addresses. Any advice will be appreciated. Thanks. Eitan On Thu, 8 May 2003, Steven Blakeslee wrote: > Are you sure you need to use the relocation patch? > > -----Original Message----- > From: Eitan Rabin [mailto:rabin at mellanox.co.il] > Sent: Thursday, May 08, 2003 3:04 PM > To: linuxppc-embedded at lists.linuxppc.org > Subject: MPC860 and I2C > > > > Hi All, > > I'm trying to use the MPC I2C controller to generate I2C transactions. I > use the devel kernel version and include the I2C relocation patch (seen > in /var/log/messages). > > I used the standard I2C driver and also tried the driver downloaded > directly from lmsensors. > > The problem occurs when I activate the master. As soon as I give the > master the start command (i2c->i2c_i2com = 0x80) for the DMA transaction > to start the CPU complete freezes. > I narrowed the problem and found out the it is actually the address of the > descriptor the one causing the CPU to hang. If I give addresses that are > relatively small, few Kilos, then everything is OK. If I give addresses > that are given to me by kmalloc and translated properly then the cpu > hangs. > > It seems to me that maybe something is wrong with the SDMA > configuration. > > The cards I'm using are CLLF from embedded planet. > > > Any assistance will be highly appreciated. > > Thanks. > > Eitan. > > > ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
