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Groups > linux.kernel > #1380070
| From | Wolfram Sang <wsa@the-dreams.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v5 2/2] i2c: rk3x: add i2c support for rk3399 soc |
| Date | 2016-04-15 20:00 +0200 |
| Message-ID | <rogc9-6Qh-9@gated-at.bofh.it> (permalink) |
| References | <rdBWG-50M-13@gated-at.bofh.it> <rdBWH-50M-19@gated-at.bofh.it> <rnUv0-6rs-21@gated-at.bofh.it> <roaT8-2Rq-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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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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Re: [PATCH v5 2/2] i2c: rk3x: add i2c support for rk3399 soc Wolfram Sang <wsa@the-dreams.de> - 2016-04-14 20:50 +0200
Re: [PATCH v5 2/2] i2c: rk3x: add i2c support for rk3399 soc Heiko Stübner <heiko@sntech.de> - 2016-04-15 09:40 +0200
Re: [PATCH v5 2/2] i2c: rk3x: add i2c support for rk3399 soc "David.Wu" <david.wu@rock-chips.com> - 2016-04-15 14:20 +0200
Re: [PATCH v5 2/2] i2c: rk3x: add i2c support for rk3399 soc "David.Wu" <david.wu@rock-chips.com> - 2016-04-15 14:20 +0200
Re: [PATCH v5 2/2] i2c: rk3x: add i2c support for rk3399 soc Wolfram Sang <wsa@the-dreams.de> - 2016-04-15 20:00 +0200
Re: [PATCH v5 2/2] i2c: rk3x: add i2c support for rk3399 soc "David.Wu" <david.wu@rock-chips.com> - 2016-04-18 15:20 +0200
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