[U-Boot-Users] mpc8xx hardware i2c
Greetings
Does anyone have stable working hardware (CPM driven) i2c for the mpc8xx please? I'm OK with the bit-banging config but I'd like to see the hardware version work:-)
Cheers
In message 3F4ADD81.2040302@tait.co.nz you wrote:
Does anyone have stable working hardware (CPM driven) i2c for the mpc8xx please? I'm OK with the bit-banging config but I'd like to see the hardware version work:-)
The answer to your question is: yes, there is stable working hardware using the CPM I2C controller.
Ummm... please try to assume that ALL features in U-Boot are working initially. Please ask on the list only when you have serious reason to doubt that anything is broken. There are so many features in U-Boot that it would take a lot of time to continue confirming that they are indeed working on some board or another.
Best regards,
Wolfgang Denk
Wolfgang Denk wrote:
The answer to your question is: yes, there is stable working hardware using the CPM I2C controller.
Do you have an example of a U-Boot version/board where this works without CPM microcode patches please? (I'm using an 859T which has no outstanding microcode patches currently). Since the driver code will be common between all (non-patched) mpc8xx CPUs and I know the externals of my hardware are OK (since the bit banging code is fine) I will then have a basis for further testing the code for one and all.
Many thanks
In message 3F4D2800.7060704@tait.co.nz you wrote:
Do you have an example of a U-Boot version/board where this works without CPM microcode patches please? (I'm using an 859T which has no
We tested this (for example) on LWMON (with and without U-Code patches enabled). OTOH - we usually use soft-i2c on all systems as ther eis absolutely no advantage (but sometimes a lot of trouble) with the CPM version.
outstanding microcode patches currently). Since the driver code will be common between all (non-patched) mpc8xx CPUs and I know the externals of my hardware are OK (since the bit banging code is fine) I will then have a basis for further testing the code for one and all.
What exactly is your problem?
Best regards,
Wolfgang Denk
participants (2)
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Robin Gilks -
Wolfgang Denk