TLV320ADC6140: How to access i2c registers from user space

moran farkash

Part Number: TLV320ADC6140

Hello,

I'm working under Linux(Debian) with 2 TLV320ADC6140.

Once the device driver loaded (by adding it to device tree) , both devices marked as UU (kernel use)

How should I access the I2C registers (read/write) from user space if kernel own their access ??

Please advise.

BR,

Moran.

0 Jeff McPherson over 2 years ago

Hi Moran,

I myself can not support linux well. Let me reach out to our linux expert.

Best Regards,

Jeff

0 moran farkash over 2 years ago in reply to Jeff McPherson

Great.

Thanks

0 Jeff McPherson over 2 years ago in reply to moran farkash

Hi Moran,

For ease of use, please wait to respond until I return with an answer. I should have one within 48 hours if not less.

Thank you for your patience,

Jeff

0 Raphael Xu over 2 years ago

The commands are:

i2cget -y -f 2 0x4c 0x11 => gets I2C bus 2 at device 0x4C address and register 0x11
i2cset -y -f 2 0x4c 0x11 0x00 => sets I2C bus 2 at device 0x4C address and register 0x11 to 0x00

0 moran farkash over 2 years ago in reply to Raphael Xu

Thanks.

I missed the -f (force even it is busy)

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