-------- In message <20180129132736.ga66...@bluezbox.com>, Oleksandr Tymoshenko writes:
>> If I pick a RPI[23] out of the box, download a FreeBSD image, >> put the card in and play around, I should be able to put a >> LED in a breadboard and configure a line for PWM or attach >> an I2C or SPI device without reboot between every single >> experiment. > >No problem. We include pwm.dtbo in our snapshot and config.txt. >We have PWM running out of the box. Problem solved, no need for >any hacks. I'll gladly work with Glen and Brad to get this >functionality in snapshots/builds. You seem to have skipped the bit about "without reboot" ? >Raspberry Pi and other hobbyist ARM boards are basically Lego. >They can be turned into multiple things and that's their selling >point. They're hackers' toys. That's *exactly* why I want us to support them better. >You ignored my question: what would be authoritative source for this >kind of info? World is not perfect, FreeBSD/arm support is not perfect. >We have limited resources. Where we should apply them to guide >new contributors? At the very least have some place to point developers for a resonably up-to-date idea of what the FDT related architecture in FreeBSD is. Either documentation or source code (preferably with a bit of contextual comments) on our chosen reference platform. (Source code on ref-platform is probably more robust, as there is a better chance that it will be kept current.) >You also ignored my question about clkman fix. Provided you have >all the documentation you need [...] I don't. The information for the PWM case was based on an affine transform of information for the GPIO clock some shrewed guesses and finally in-lab measurement of what actually transpired when I frobbed registers. But more importantly, I have no idea what servies *a* clock manager offers, through which apis and to what clients and at what level of abstraction and flexibility ? -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
