Re: [PATCH v2] i2c: rk3x: fix bug that cause measured high_ns doesn't meet I2C spec
From: Wolfram Sang
Date: Wed Dec 03 2014 - 06:15:43 EST
> + - rise-ns : Number of nanoseconds the signal takes to rise (t(r) in i2c spec).
> + If not specified this is assumed to be the max the spec allows
> + (1000 ns for standard mode, 300 ns for fast mode) which might
> + cause slightly slower communication.
> + - fall-ns : Number of nanoseconds the signal takes to fall (t(f) in the i2c0
> + spec). If not specified this is assumed to be the max the spec
> + allows (300 ns) which might cause slightly slower communication.
We already have those bindings from the designware driver:
- i2c-sda-hold-time-ns : should contain the SDA hold time in nanoseconds.
- i2c-scl-falling-time : should contain the SCL falling time in nanoseconds.
- i2c-sda-falling-time : should contain the SDA falling time in nanoseconds.
Can you reuse them? Or do you really need a specific rise-time property?
If so, please matche the style of the bindings above.
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