Re: [U-Boot-Users] ack problem in common/soft_i2c.c?

Andrew Dyer wrote:

I am working with the soft i2c code on my target and I believe there is a problem in the send_ack() function.

[snip]

In my case changing the order to:

I2C_SCL(0); I2C_DELAY; I2C_ACTIVE;

I ported U-Boot to the AT91M55800A (ARM7DTMI) which has multi-driver capable GPIOs, but didn't want to spend the time to change the I2C code and left the ACTIVE/TRISTATE mechanism - and also came across the same problem. A 24C08 worked fine, but e.g. a ADV7181 would only give me a few consecutive reads.

So yes, I can confirm there is a problem and also that the above mentioned fix is OK.

Thomas