Re: [PATCH 4/4] rtc: ds1307: add frequency-test property to check calibration on m41txx

2018-05-09 Thread Giulio Benetti
Hi Rob, Il 08/05/2018 19:44, Rob Herring ha scritto: On Tue, May 8, 2018 at 9:56 AM, Giulio Benetti wrote: On m41txx you can enable open-drain OUT pin to check if calibration is ok. Enabling OUT pin with frequency-test bool property, OUT pin will tick 512 times faster than 1s tick base. Enabl

Re: [PATCH 4/4] rtc: ds1307: add frequency-test property to check calibration on m41txx

2018-05-08 Thread Rob Herring
On Tue, May 8, 2018 at 9:56 AM, Giulio Benetti wrote: > On m41txx you can enable open-drain OUT pin to check if calibration is ok. > Enabling OUT pin with frequency-test bool property, OUT pin will tick > 512 times faster than 1s tick base. > > Enable FT bit on CONTROL register if calibration is a

[PATCH 4/4] rtc: ds1307: add frequency-test property to check calibration on m41txx

2018-05-08 Thread Giulio Benetti
On m41txx you can enable open-drain OUT pin to check if calibration is ok. Enabling OUT pin with frequency-test bool property, OUT pin will tick 512 times faster than 1s tick base. Enable FT bit on CONTROL register if calibration is active. Signed-off-by: Giulio Benetti --- Documentation/device