DRA756: PDK 1.0.5 Potential I2C Driver Issue: I2C transfer always results in I2C_STS_SUCCESS

Eric Best

Part Number: DRA756

There is a potential issue with PDK v.1.0.5. The IPU I2C driver is always returning I2C_STS_SUCCESS, even if the transfer is not properly ack'd by the slave. I briefly looked at the release notes for newer Proc-SDK's (with PDK v1.0.6 and v1.0.7) and did not see anything in the fixed issues section. This can be replicated by just attempting a transfer with the wrong slave address.

Thanks,
Eric

over 7 years ago

0 Yordan Kamenov over 7 years ago

TI__Mastermind 42515 points

Hi Eric,

I have forwarded your question to PDK experts.

Regards,
Yordan

0 Lester Longley over 7 years ago in reply to Yordan Kamenov

TI__Intellectual 1530 points

Hi Eric,

It's expected that this deficiency in the PDK 1.0.5 I2C driver has been addressed in 1.0.6 (& later).

See item PRSDK-1899 "I2C: All the HW/IP error status should be returned to the application" mentioned in C:\ti\pdk_dra7xx_1_0_6\packages\ti\drv\i2c\docs\ReleaseNotes_I2C_LLD.pdf.

Regards,
Lester

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DRA756: PDK 1.0.5 Potential I2C Driver Issue: I2C transfer always results in I2C_STS_SUCCESS