Dear List, I'm writing an I2C device driver for an MPC860 (version D.3) chip. This is a motorola PowerPC RISK processor with a lot of integrated communication modules (ethernet, I2C, etc.). Unfortunatelly when the ethernet module (SCC1) is used with the I2C module then the processor has to be loaded by a microcode patch. I dowloaded from the homepage of Motorola (microcode patch number MPC860MC04) the microcode patch and I followed all the steps described there, but when I try to launch the I2C transmission in loopback mode it hangs up. I get connected to the TechHelp of motorola, but we have the usual circles w/o moving forward. Can anyone help me what should I try? Any idea is waited! IMHO (of course I'm not 100% sure): - The patch is uploaded successfully. - CPM module is reseted after that. - I2C module registers are set on the relocated I2C PRAM area. - The Rx and Tx DBs are set properly and the Tx and Rx buffers in the kernel RAM are allocated well. ... and when I try to launch the I2C transmission (loopback mode) the kernel hangs. Or is seems to hang. The screen does not change at all. The output buffer can't be sent to the console (thru serial line). Can anyone give some help? TIA && good byte! -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
