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by chwe
Wed Aug 01, 2018 7:41 pm
Forum: General discussion
Topic: RPI 3B+ reports incorrect clockspeed. Video
Replies: 60
Views: 6495

Re: RPI 3B+ lies about it's clockspeed. Video

If you measure your Raspberries in "MIPS per square centimetre" you'll be amazed at how powerful your SBC computer is. It's processor power way outstrips the first mainframes (the size of two football fields) I worked on in 1981 (although mainframes always win on I/O throughput because of Gene Amda...
by chwe
Wed Aug 01, 2018 5:23 pm
Forum: General discussion
Topic: RPI 3B+ reports incorrect clockspeed. Video
Replies: 60
Views: 6495

Re: RPI 3B+ lies about it's clockspeed. Video

What you have to consider is what in your humble opinion is wrong may not be others humble opinion. Hopefully not! What a boring world when everybody would have the same opinion.... :lol: IMO your goal should be to find a way which fits best for your user-base. Whereas I can decide if this acceptab...
by chwe
Wed Aug 01, 2018 2:48 pm
Forum: General discussion
Topic: RPI 3B+ reports incorrect clockspeed. Video
Replies: 60
Views: 6495

Re: RPI 3B+ lies about it's clockspeed. Video

Actually this isn;t technically a production error, but variations with chips from a supplier. The production was fine! One could argue that the QC after production should have found the fault, but that actually quite difficult to do. AFAIUI the chip supplier may have changed their binning procedur...
by chwe
Wed Aug 01, 2018 2:06 pm
Forum: General discussion
Topic: Why must the raspberrypi be so proprietary?
Replies: 41
Views: 3800

Re: Why must the raspberrypi be so proprietary?

So why do people think that we might drop support for VC4 (which I think was the one line precis of your post)? We have been selling Pi for 5 years, and every single one of the boards we have sold still works with the *current* Raspbian. We have spent a lot of time ensuring backwards compatibility....
by chwe
Wed Aug 01, 2018 12:18 pm
Forum: General discussion
Topic: RPI 3B+ reports incorrect clockspeed. Video
Replies: 60
Views: 6495

Re: RPI 3B+ lies about it's clockspeed. Video

I'm not sure how easy it is to fix, not my area. We try and make sure that as much of the Pi specific code get upstreamed - this makes maintenance much easier, and means easy access to the source for everyone. However, getting stuff accepted can be nightmarish, and can take a lot of time even for a...
by chwe
Wed Aug 01, 2018 3:17 am
Forum: General discussion
Topic: Why must the raspberrypi be so proprietary?
Replies: 41
Views: 3800

Re: Why must the raspberrypi be so proprietary?

I don't think there is a completely Open Source GPU design that is actually in mass production? The VC4 is the closest to being openly documented. there you go: https://nullr0ute.com/2017/09/the-state-of-open-source-accelerated-graphics-on-arm-devices/ I've in mind that there's a fosdem talk (2017 ...
by chwe
Tue Jul 31, 2018 8:54 pm
Forum: General discussion
Topic: Recommendation for USB to SATA Adapter
Replies: 7
Views: 13557

Re: Recommendation for USB to SATA Adapter

Last weekend, I hooked a "Geekworm X820" with an "AMD Radeon 128G SSD" up to a new 3B+ and it simply works great! can you look which SATA-USB bridge chip is populated on that board? I didn't spot a proper description of this board. But one good point I forgot, if your SATA/USB bridge powers the SSD...
by chwe
Tue Jul 31, 2018 6:12 pm
Forum: General discussion
Topic: Recommendation for USB to SATA Adapter
Replies: 7
Views: 13557

Re: Recommendation for USB to SATA Adapter

I would go for a JMicron JMS578 based one. They get firmware updates and work without issues. They allow basic S.M.A.R.T. functions (to monitor the disc-health of your SSD) and probably in the future trim too. Can't say if it will work perfectly with your RPi cause my JMS578 is soldered directly to ...
by chwe
Tue Jul 31, 2018 3:28 pm
Forum: General discussion
Topic: RPI 3B+ reports incorrect clockspeed. Video
Replies: 60
Views: 6495

Re: RPI 3B+ lies about it's clockspeed. Video

AIUI, the behaviour comes from a problem in the upstream driver which is responsible for reporting the clock rate, but I can't find a reference right now. Dom or Phil would be best to comment, since they're know exactly what the issue is. so it's an upstream issue when 'more or less' every other SB...

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