trace_i2c
trace_i2c("unexpected status from i2_read[%d]: %d",
trace_i2c("i2c refusing 2 phase transfer with conflicting target addresses");
trace_i2c("i2c refusing complex transfer read0=%d read1=%d",
trace_i2c("i2c refusing %d phase transfer",num);
trace_i2c("unexpected status from i2_write[%d]: %d",