On 02/29/2016 10:56 AM, Ramesh Shanmugasundaram wrote: >> On 02/29/2016 10:21 AM, Ramesh Shanmugasundaram wrote: >>> Added r8a7795 SoC support. >>> >>> For smoother bit timing calculation, the rounded clock frequency is >> used. >> >> Why this? From my point of view this introduces a clock error. > > Thanks for the comments. > > Without the rounded clock, can_calc_bittiming returns different BRP > values and reports high sampling error percentage. However, the > rounded clock shows no such issues and it works fine for all > bitrates. > > Below is an e.g. from my board for an input clock differs by 2Hz. I think it's better to fix the algorithm. I'll look into it. Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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