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| author | Austin Christ <[email protected]> | 2018-05-10 16:13:56 +0000 |
|---|---|---|
| committer | Wolfram Sang <[email protected]> | 2018-05-29 17:53:03 +0000 |
| commit | 71fbafcc45fed7c647987495900b8f6ff29fc5aa (patch) | |
| tree | ff2e9e70e5065888adeb6a99ba595c53b19b7e64 /drivers/i2c/algos/i2c-algo-bit.c | |
| parent | i2c: qup: Add support for Fast Mode Plus (diff) | |
| download | kernel-71fbafcc45fed7c647987495900b8f6ff29fc5aa.tar.gz kernel-71fbafcc45fed7c647987495900b8f6ff29fc5aa.zip | |
i2c: qup: Correct duty cycle for FM and FM+
The I2C spec UM10204 Rev. 6 specifies the following timings.
Standard Fast Mode Fast Mode Plus
SCL low 4.7us 1.3us 0.5us
SCL high 4.0us 0.6us 0.26us
This results in a 33%/66% duty cycle as opposed to the 50%/50% duty cycle
used for Standard-mode.
Add High Time Divider settings to correct duty cycle for FM(400kHz) and
FM+(1MHz).
Signed-off-by: Austin Christ <[email protected]>
Reviewed-by: Sricharan R <[email protected]>
Reviewed-by: Andy Gross <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
Diffstat (limited to 'drivers/i2c/algos/i2c-algo-bit.c')
0 files changed, 0 insertions, 0 deletions