Re: [U-Boot] i2c_reg_read() on 8xx

22 Oct
2008
22 Oct
'08
10:19 p.m.
Dear Timur,
In message 48FF7F40.1010205@freescale.com you wrote:
Wolfgang,
Mike Frysinger helped me resolve the problem with i2c_reg_read() on Blackfin, so I'll be posting a new patch soon. However, I noticed that 8xx has a problem, too:
uchar i2c_reg_read(uchar i2c_addr, uchar reg) { uchar buf;
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); i2c_read(i2c_addr, reg, 1, &buf, 1); return (buf);
}
Is the call to i2c_init() necessary on 8xx boards? Shouldn't I2C have already been initialized?
There are some 8xx boards where I2C is used very early so it might be necessary. I have to admit that I don't remember - that code is more than 6 years old.
Best regards,
Wolfgang Denk
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Wolfgang Denk