Messages in this thread | | | Date | Fri, 15 Apr 2016 19:58:46 +0200 | From | Wolfram Sang <> | Subject | Re: [PATCH v5 2/2] i2c: rk3x: add i2c support for rk3399 soc |
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> The default frequency rate of function clock is 50M Hz, it can match > F/S mode, but HS mode not. If use default rate 50M to get 1.7M > scl-frequency rate , we could not get accurately 1.7M frequecy rate. > The input-clk-rate is more higher, we get more accurately > scl-frequency rate, as 200M is a suitable input-clk-rate. > > If 200M was used for F/S mode, it would increase power consumption, so > add a option that could be configured from DT.
If I understand you correctly, couldn't you use clk_set_rate() depending on the desired scl frequency which is already described in DT as clock-frequency?
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