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The RK3288, although not an A17, is a very capable chip. I personally have no complaints at all at this stage of development. Finally a quad-core that has significant gains over the dual core performance of RK3066
...it's also a 40nm design like the RK3066, not 28nm like the RK3188. Still, the DVFS implementation and overall power consumption seems to be improved.
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Originally posted by no_spam_for_me View PostBut, Haba, your explanation doesn't really fits at all.
It doesn't really fits at all because ARM talk about big.LITTLE at A17, so the explanation for the Allwinner A80 is ok http://www.allwinnertech.com/en/clq/processora/A80.html, because they talk about 8 cores (4 * A15 and 4 * A7) but your explanation doesn't fit to the RK3288, because they talk about 4 cores, so it must be [4 * A12] or if it is an A17 [2 * A1? and 2 * A7]???
And, also in my eyes, the T764 isn't an indicator for the A17 because ARM doesn't know a T764 (I know that some tools tells it's a T764 but I don't know how and where they determine this information)???
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Originally posted by Haba View PostBigLITTLE is a combination of smaller high efficient cores like Cortex-A7 and high powered A12-17 cores. How many of each is up to the manufacturer up to a limit. Allwinner A80 has four A-7 and four A-15 cores for example . The A-15 are high power/power hungry and used only when needed, the A-7 are used most of the time to save battery and heat in mobile devices. TV boxes do not need this big little at all, I would rather have more gpu cores. The CPU's don't have to be bigLittle either instead they just use high or low powered cores like the RK3288 which uses four high powered cores. I still think the RK3288 has four A-17 because of the current documentation from Rockchip and elsewhere and the 700 series gpu. The A12 is always listed with the 600 series gpu. Software tools and code may not be detecting it properly.
Do a dmesg and look at the read back of hw perfevents PMU driver. Every bit of documentation, including the architecture part identification code points to A12.
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But, Haba, your explanation doesn't really fits at all.
It doesn't really fits at all because ARM talk about big.LITTLE at A17, so the explanation for the Allwinner A80 is ok http://www.allwinnertech.com/en/clq/processora/A80.html, because they talk about 8 cores (4 * A15 and 4 * A7) but your explanation doesn't fit to the RK3288, because they talk about 4 cores, so it must be [4 * A12] or if it is an A17 [2 * A1? and 2 * A7]???
And, also in my eyes, the T764 isn't an indicator for the A17 because ARM doesn't know a T764 (I know that some tools tells it's a T764 but I don't know how and where they determine this information)???
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Originally posted by no_spam_for_me View PostWhat I don't really understand is how do they count the cores at big.LITTLE?
If the rk3288 is an A17 http://www.arm.com/products/processo...=TopNaviL27328 they count 4 cores (BTW: ARMv7-A), but if I look at the big.LITTLE http://www.arm.com/products/processo...processing.php they talk about "high-performance ARM CPU cores are combined with the most efficient ARM CPU cores", so in my eyes, if they count 2 hp-cores and 2 me-cores, the A12 (BTW: also ARMv7-A) must be better at TV Boxes...???
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Originally posted by no_spam_for_me View PostWhat I don't really understand is how do they count the cores at big.LITTLE?
If the rk3288 is an A17 http://www.arm.com/products/processo...=TopNaviL27328 they count 4 cores (BTW: ARMv7-A), but if I look at the big.LITTLE http://www.arm.com/products/processo...processing.php they talk about "high-performance ARM CPU cores are combined with the most efficient ARM CPU cores", so in my eyes, if they count 2 hp-cores and 2 me-cores, the A12 (BTW: also ARMv7-A) must be better at TV Boxes...???
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Originally posted by Javimetal View PostDo you have any proof? I'd like to ask Rockchip about this.
About the A80, today I was checking a new board with this SoC, but it looks like need some time yet to be ready and stable.
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Originally posted by bluesmanuk View PostI've mailed Arm for clarification based upon the articles published so far and also asked the question in the Arm community forums.
If the rk3288 is an A17 http://www.arm.com/products/processo...=TopNaviL27328 they count 4 cores (BTW: ARMv7-A), but if I look at the big.LITTLE http://www.arm.com/products/processo...processing.php they talk about "high-performance ARM CPU cores are combined with the most efficient ARM CPU cores", so in my eyes, if they count 2 hp-cores and 2 me-cores, the A12 (BTW: also ARMv7-A) must be better at TV Boxes...???
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Originally posted by Javimetal View PostWell, today I have been with a member of ROCKCHIP, so I connected a RK3288 board to my laptop by OTG port, opened my windows cmd, adb shell.....
cd sys/devices and there was the "ARMv7 Cortex-A12"
He said must contact ARM to know more about this and give me a reply, we exchanged contacts and also have been talking about the 4K - 60Hz, he said this is already fixed, even they bought some TVs from Japan directly to test this.
Well... more news soon about this as I have direct contact with Rockchip guys.
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I've mailed Arm for clarification based upon the articles published so far and also asked the question in the Arm community forums.
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Originally posted by rceccleston View Post
What do you think to Rockchip misrepresenting / advertising the RK3288 as an A17, since its actually an A12, because it doesn't feature bigLITTLE.
Considering Allwinner have recently released their A80, with ARMs bigLITTLE architecture, Rockchip are playing dirty marketing trick since their already a generation behind.
About the A80, today I was checking a new board with this SoC, but it looks like need some time yet to be ready and stable.
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must contact ARM to know more about this
That made me chuckle.
How can they not know what their own product is?
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Originally posted by bluesmanuk View PostCould it be that the latest iteration of 3288 is now compliant, therefore able to advertise as A17?
cd sys/devices and there was the "ARMv7 Cortex-A12"
He said must contact ARM to know more about this and give me a reply, we exchanged contacts and also have been talking about the 4K - 60Hz, he said this is already fixed, even they bought some TVs from Japan directly to test this.
Well... more news soon about this as I have direct contact with Rockchip guys.
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Originally posted by no_spam_for_me View PostOk, I had hoped I could identify some tools, but it's only a marketing video...
EDIT:
ok, the second link is a little bit more helpful... I think they use the known directories (at kernel) to determine the values via USB... but I think no way to get this program...
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