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Groups > linux.kernel > #1401652
| From | Doug Anderson <dianders@chromium.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v10 7/8] i2c: rk3x: add i2c support for rk3399 soc |
| Date | 2016-05-16 19:30 +0200 |
| Message-ID | <rzuvd-1tB-5@gated-at.bofh.it> (permalink) |
| References | <rzrxf-85I-3@gated-at.bofh.it> <rzrGW-892-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
David, On Mon, May 16, 2016 at 7:05 AM, David Wu <david.wu@rock-chips.com> wrote: > - new method to caculate i2c timings for rk3399: > There was an timing issue about "repeated start" time at the I2C > controller of version0, controller appears to drop SDA at .875x (7/8) > programmed clk high. On version 1 of the controller, the rule(.875x) > isn't enough to meet tSU;STA > requirements on 100k's Standard-mode. To resolve this issue, > sda_update_config, start_setup_config and stop_setup_config for I2C > timing information are added, new rules are designed to calculate > the timing information at new v1. > - pclk and function clk are separated at rk3399 > > Signed-off-by: David Wu <david.wu@rock-chips.com> > Tested-by: Caesar Wang <wxt@rock-chips.com> > Tested-by: Heiko Stuebner <heiko@sntech.de> > --- > Change in v10: > - fix the clean of con register in rk3x_i2c_stop() > > Change in v9: > - add spin lock for tuning updated in rk3x_i2c_adapt_div() (Doug) > > Changes in v8: > - update tuning in RKI2C_CON register by doing a read-modify-write (Doug) > - new method to use pclk and clk (Doug) > > Changes in v7: > - transform into a 9 series patches (Doug) > - drop highspeed with mastercode, and support fast-mode plus (Doug) > > drivers/i2c/busses/i2c-rk3x.c | 294 +++++++++++++++++++++++++++++++++++++++--- > 1 file changed, 274 insertions(+), 20 deletions(-) Reviewed-by: Douglas Anderson <dianders@chromium.org>
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[PATCH v10 0/8] add i2c driver supported for rk3399 David Wu <david.wu@rock-chips.com> - 2016-05-16 16:20 +0200
[PATCH v10 7/8] i2c: rk3x: add i2c support for rk3399 soc David Wu <david.wu@rock-chips.com> - 2016-05-16 16:30 +0200
Re: [PATCH v10 7/8] i2c: rk3x: add i2c support for rk3399 soc Doug Anderson <dianders@chromium.org> - 2016-05-16 19:30 +0200
[PATCH v10 5/8] i2c: rk3x: Move spec timing data to "static const" structs David Wu <david.wu@rock-chips.com> - 2016-05-16 16:30 +0200
[PATCH v10 8/8] i2c: rk3x: support fast-mode plus for rk3399 David Wu <david.wu@rock-chips.com> - 2016-05-16 16:30 +0200
[PATCH v10 6/8] dt-bindings: i2c: rk3x: add support for rk3399 David Wu <david.wu@rock-chips.com> - 2016-05-16 16:30 +0200
Re: [PATCH v10 6/8] dt-bindings: i2c: rk3x: add support for rk3399 Rob Herring <robh@kernel.org> - 2016-05-16 18:50 +0200
Re: [PATCH v10 0/8] add i2c driver supported for rk3399 Doug Anderson <dianders@chromium.org> - 2016-05-16 22:20 +0200
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