Help OVERCLOCKING MiPad 4 - Xiaomi Mi Pad 4 Questions & Answers

As we all know snapdragon 660 is a mid tier chipset. I think we could push it a bit further, the chip is very cool and lots of thermal headroom. Does anyone know about the custom kernel for it? Thanks in advance

You may have to wait for the kernel source code to be available, then you may see kernels that allow OC.

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Please take look...

I just saw the specs of galaxy ace.
Same adreno 200 gpu as our's and the same processor msm7227 but clocked at 800 Mhz....wtf?
I couldnt overclock my phone to a stable 806 ever
Can anyone make any comments please??
take a look
http://www.gsmarena.com/samsung_galaxy_ace_s5830-3724.php
divyanshu308 said:
I just saw the specs of galaxy ace.
Same adreno 200 gpu as our's and the same processor msm7227 but clocked at 800 Mhz....wtf?
I couldnt overclock my phone to a stable 806 ever
Can anyone make any comments please??
take a look
http://www.gsmarena.com/samsung_galaxy_ace_s5830-3724.php
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Click to collapse
Kernel matters rolleys.
Sent from my LG-P500 using XDA Premium App
Yes, Its due to kernel only. And not to worry so mush. What FK has given us till now you can use @ 768, It's not bad at all.
lol binodray, u know about android or ur just acting like u know??
we cant overclock because the msm7227 in our device is connected to cheap cables and busses and probably cheap ahb or something...
thats y some people are able to overclock to 806 and some people are not able to...
No dear I don’t know anything.
On a short note
The MSM7227 is ARM 11 family 32bit Qualcomm MSM7225 processor. This series seems to run PLL2 at 1200MHz, which is why they are capable of running at 600MHz. (1200/2 binary thing).
what is over clocking?
Over clocking typically refers to running a CPU at a clock speed higher than that for which it was originally designed. And the kernel is told that it is being run at a higher speed (In realty it’s not).
Why phone crash?
When phone generate very high voltage due to increased clock speed we have kernel panic in result.
How we solve this?
As far as I know if dev can alter UV table in kernel we can have processor with 1728 which is 864. This means there could be one kernel supporting OC frequencies up to 1728Mhz (lets say 1728,1600,1500,1400,1300,1200,1120), and user could choose which ones he wants to use (eg 1400 and 1120, disabling the rest).
Hope this will make you clear why we need kernel and why OC is based on kernel codes.

Possible Omap 4 Overclock

Hi guys! I was just checking out this thread in the Bionic section and they have an overclock without that many prerequisites. http://forum.xda-developers.com/showthread.php?t=1439013All we need is a rom with init.D support and tekahuna's "symsearch.ko" and "opptimizer.ko" modules. DroidTh3ory already has init.D support in this Bionic rom so if we could get that in our roms and just find a way to apply tekahuna's modules, our device may be able to get an overclock. Let me know what you guys think. I'm not sure if this is possible but I just want to try and help the Razr XDA community. Sorry if this is arbitrary and completely unapplicable to our device.
Intriguing - conveniently, there's a thread on enabling init.d support that just popped up: http://forum.xda-developers.com/showthread.php?t=1444545
Sent from my XT910 using xda premium
Works on the atrix2
From what I read in original thread on rootzwiki Razr can gain only 50MHz addition with this.
theEnzy said:
From what I read in original thread on rootzwiki Razr can gain only 50MHz addition with this.
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Ha, funny. Given the RAZR is factory overclocked to 1.2ghz, I suppose it's to be expected. I've underclocked mine to the 1ghz the chip is rated for to save juice anyway.
Sent from my XT910 using xda premium
razr is not overclocked versus the other omap4430 1.0Ghz devices. Parts are tested in the fab, and the ones that can do 1.2g without crash andd without heating a lot are selled to be 1.2-compatible. Other are only 1.0G approved.
It means also that overclocking a 1.0 to 1.2 may cause crash and excessive heat.
For the 1.2G parts of the razr, don't expect great overclock. the omap is more enclosed than in bionic and is already reaching the thermal policy barriere that underclock it when intensive use. If you clock the opp-max over this frequency, you will hit the barrier faster and then finish by using lower opps most of time...
greg_mp said:
razr is not overclocked versus the other omap4430 1.0Ghz devices. Parts are tested in the fab, and the ones that can do 1.2g without crash andd without heating a lot are selled to be 1.2-compatible. Other are only 1.0G approved.
It means also that overclocking a 1.0 to 1.2 may cause crash and excessive heat.
For the 1.2G parts of the razr, don't expect great overclock. the omap is more enclosed than in bionic and is already reaching the thermal policy barriere that underclock it when intensive use. If you clock the opp-max over this frequency, you will hit the barrier faster and then finish by using lower opps most of time...
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Click to collapse
Interesting, so not all 4430s are born equal? Is there an actual variant thereof rated at 1.2, or do they actually test every single chip individually? I wasn't implying it's unstable at 1.2ghz, and hardware design does of course come into it as you've said, but as far as I'm aware it's the exact same chip that TI rated at 1.0.
Perhaps 'clocked higher than the chip has been generally rated for by its manufacturer' is a more accurate description than 'factory overclocked'?
Sent from my XT910 using xda premium
hmmm.. this is all very interesting. I feel like the OMAP 4430 in the Razr should be at more capable than 1.2ghz. My OG Droid ran stable at 1.275ghz and it had a 3430 which was built on the 65nm chip process vs the 45 in the Razr. I must say 1.25gz as a max is quite underwhelming. I was hoping this bad boy would at least be capable of 1.5ghz.
MeNaCe2s0cieTy said:
hmmm.. this is all very interesting. I feel like the OMAP 4430 in the Razr should be at more capable than 1.2ghz. My OG Droid ran stable at 1.275ghz and it had a 3430 which was built on the 65nm chip process vs the 45 in the Razr. I must say 1.25gz as a max is quite underwhelming. I was hoping this bad boy would at least be capable of 1.5ghz.
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Click to collapse
I feel the same, but reality is cruel
I read some time ago on a tech website that the 4460 (1.5) and the 4430 were made from the exact same materials. The only difference is that the ones that hit a very high threshold at 1.5 were stamped 1.5. 4460's. It's not that the 4430's couldn't do 1.5ghz , most could. Just that they couldn't run the benchmark all the way to the end the amount of times needed to qualify. Odds are that any 4430 could do 1.5ghz and probably stable. We will never stress it out the way these benchmarks do.
Does anybody know if this hack could actually work and allow us to overclock our device. I think we can worry about how far we can overclock after we get an actual overclock lol. Would anyone be able to rewrite the "symsearch.ko" and "opptimizer.ko" modules for our device so we can get an overclock on our device?
MeNaCe2s0cieTy said:
Does anybody know if this hack could actually work and allow us to overclock our device. I think we can worry about how far we can overclock after we get an actual overclock lol. Would anyone be able to rewrite the "symsearch.ko" and "opptimizer.ko" modules for our device so we can get an overclock on our device?
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Click to collapse
No rewriting necessary. It was developed on a RAZR. Available in the download section of the OPPtimizer site. 0.1 modules only adjust top frequency. 0.2 modules adjust top frequency and voltage. As stated on the homepage, symsearch.ko is the creation of Skrilax_CZ. In case you don't know who that is, he's the guy who got 2nd-init functioning for all of us.
http://opptimizer.googlecode.com
---------- Post added at 08:21 PM ---------- Previous post was at 07:54 PM ----------
greg_mp said:
razr is not overclocked versus the other omap4430 1.0Ghz devices. Parts are tested in the fab, and the ones that can do 1.2g without crash andd without heating a lot are selled to be 1.2-compatible. Other are only 1.0G approved.
It means also that overclocking a 1.0 to 1.2 may cause crash and excessive heat.
For the 1.2G parts of the razr, don't expect great overclock. the omap is more enclosed than in bionic and is already reaching the thermal policy barriere that underclock it when intensive use. If you clock the opp-max over this frequency, you will hit the barrier faster and then finish by using lower opps most of time...
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Click to collapse
Very true, and something to consider the when overclocking OMAP4 devices. They don't clock as high as some would think. Although, I'm not so sure that the lag that most people are describing is the thermal policy kicking in. I've noticed that this lag can be cleared up with additional voltage, and not exhibit the behavior of getting clamped down on by the thermal policy. For example, 1250MHz on my Droid RAZR at stock 1.375V, is flaky, bump the nominal voltage to 1.388V, and it holds, and up to 1280MHz without the lagging condition.
You appear to be well informed on this subject. Good points you raise!
Lol. I'm still trying to understand the fact that we had a overclock this entire time. I never found one on the forums but I guess we had the tools available all this time. I honestly didn't know we had one.
Sent from my XT910 using xda premium
MeNaCe2s0cieTy said:
Lol. I'm still trying to understand the fact that we had a overclock this entire time. I never found one on the forums but I guess we had the tools available all this time. I honestly didn't know we had one.
Sent from my XT910 using xda premium
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Click to collapse
The kernel modules were only recently release. Some early testing was done in the LG Thrill community, as that was my original test device. Development was stalled a little by issues which I now realize were with the LG Thrill's kernel itself, rather than what I was doing. Got a RAZR on opening day and was able to come up with some code I feel comfortable releasing. It's only been available to the public for about a week now. I think some RAZR's will hit low 1300's... Don't know about much more.
Does this work? Is there a script for it? I have init.d support on stock from a bionic init.d cwr zip from droidrazr.com that works. What would a script look like to change voltages/ect?
Nevermind i see...its in the download section on link.
How do you run it or setup?
frostincredible on RootzWiki has created some flashable zip for Bionic, but they only work for my 0.1 modules that only support frequency manipulation. I have 0.2 modules that control voltage as well for Droid 3. You can open up his zip file and get an idea how to get things going with init.d... You can actually use his script, and just modify the echo line to say "echo 1122000000 1388000 > /proc/opptimizer", to send a voltage value, along with frequency.
http://rootzwiki.com/topic/14698-in...or-tekahunas-omap4-overclock-modules-1-10-12/
Page 2/3/4 on the official thread also has some info on init.d scripts for this.
http://rootzwiki.com/topic/14511-op...ng-kernel-modulesofficial-thread/page__st__20
CDjones over on DroidForums.net also started a good thread with some useful information:
http://www.droidforums.net/forum/dr...imental-voltage-control-support-tekahuna.html
Not the same device, but same idea.
orateam said:
I read some time ago on a tech website that the 4460 (1.5) and the 4430 were made from the exact same materials. The only difference is that the ones that hit a very high threshold at 1.5 were stamped 1.5. 4460's. It's not that the 4430's couldn't do 1.5ghz , most could. Just that they couldn't run the benchmark all the way to the end the amount of times needed to qualify. Odds are that any 4430 could do 1.5ghz and probably stable. We will never stress it out the way these benchmarks do.
Click to expand...
Click to collapse
This is not true. OMAP4460 and OMAP4430 are different chips. E.G. there are [email protected] and [email protected] the fact that the 2 products exists should be enough to say there are different.
I reckon they are not drastically different, most of the things are common.
So has anyone gained any noticable performance improvements with this? Also so it can 0nly be OC'd to 50mz more so 1.25ghz is the max? At this point is this mod developed enough for the razr for it to be a usable worth while tweak? Not dogging any devs just want to see if its worth it yet to start messing with this...
Also in the download section there is now this "MO_simple_spyder_1.5-beta-01.zip Milestone Overclock ported to Motorola Droid RAZR"
Whats that?
It depends on your particular processor, because every one is little bit different. I was able to run mine at 1300 MHz quite stable with stock voltage. But I don't see any need for more CPU power now, maybe someday
More interesting is undervolting to achieve longer battery life, which can be done with OPPtimizer too.
theEnzy said:
It depends on your particular processor, because every one is little bit different. I was able to run mine at 1300 MHz quite stable with stock voltage. But I don't see any need for more CPU power now, maybe someday
More interesting is undervolting to achieve longer battery life, which can be done with OPPtimizer too.
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Click to collapse
Has anyone had any good success with undervolting and battery life?

CPU control under Android lollipop 5.0.2

Hello everyone,
I'm looking for information. I have the current use case:
My smartphone is a Sharp Aquos Zeta SH-03G with lollipop 5.0.2 (I didn't get a choice on the device I could get )
By digging a bit in the system I found out that this smartphone is configured somehow to not use the full CPU capacity. It justs use 5 cores out of 8 of the snapdragon 810 whatever the activity on the phone.
However all the core are seen as possible to use by the kernel with correct frequencies.
Only the core up to 1.5Ghz are use normally. for the core up to 2Ghz, only one is used and not at the top frequency (max 1.4Ghz)
Which make this phone to act as a 5 core up to 1.5Ghz. I'm just curious to understand where I should look like to see where that configuration is done.
Is it in the custom kernel source code? Is it some arguments given at boot time? Is it in some configuration file somewhere on one of the booting partition?
They release the source code of the kernel so I just give at least a quick check in the processor core frequency definition for a snapdragon 810 and it was looking like all is defined approprietly to use all of them. Also the system report that it really see 8 cores and that 8 cores may be use if needed...
Any help appreciated, thanks!

Snapdragon 615

So I have the m4 aqua for quite some time, and I never actually read anything about it's SoC. Until just recently I came to see that Snapdragon 615 actually supports 1.7GHz frequency on the big cores. And I was about to ask if the cores are already clocked at 1.7GHz, and if not, can you even increase the frequency by any method (root required ofc)? I don't mind the heating if the raw performance can be improved, mostly asking for gaming purposes.
Basic thing is kernel with over clocking
Sent from E2303
Deathmake said:
Basic thing is kernel with over clocking
Sent from E2303
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Are there any kernels who already have this, or I'm supposed to build my own (I'm not very good with this stuff, so I'd rather use some already modified)?
Idk but we have sources and good way to compile kernel with over clocking.. But i dont know, this is only my opinion
Sent from E2303
It reaches 80'c max on 1.5ghz at 1.7ghz it's gonna fry cpu for sure..

All G5 CPUs locked down to 1.5ghz

Hey, I saw that all CPUs are currently locked down to 1593mhz. Our chip should have 2x1.5ghz for general use and 2x2.1ghz for high performance tasks.
But in stock as in custom Roms, I see all CPUs locked down, max freq 1593mhz and no control over queue processing, either from hotplug or CPU front. Is there something I missed? Or LG just lied to us?
I know from thermal point of view that our device would not be able to sustain 2.1ghz for a long time, but if the frequency is not even available, it is a serious matter... +500mhz is not something to overlook!
If thats true, thatd be a heartbreaking, the first thing I look to before choosing a device, is clock speed
Unlock the game optimization
I checked on cpu-z and frequencies. With optimization on, it won't go over 1,5 ghz but with that option off it is easily jumping to maximum clock speed (faster battery drain). Stock rom, don't know about custom roms.
Linux User said:
I checked on cpu-z and frequencies. With optimization on, it won't go over 1,5 ghz but with that option off it is easily jumping to maximum clock speed (faster battery drain). Stock rom, don't know about custom roms.
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You mean game optimization in settings/battery? I think we do not have that option in custom ROMs (I am currently trying Aicp 12.1) and never changed it in stock. I will try going back to stock to disable that option and see if the frequency table changes... If it does, it will be a pre-requisite before flashing custom ROMs in our device. Still, it is something the kernel should handle.
I would underclock the device on my own, as I did with my good old G2, but not having the option for the CPUs to scale as intended is not cool...
Well, frequency table shows no change with stock, but somehow, CPUs 3 and 4 scale up to 2150mhz now.
I guess LG did not cheat in the strict sense of the word, but just does not want us to have control over our devices...
Sent from my LG-H850 using Tapatalk
Floodland said:
Hey, I saw that all CPUs are currently locked down to 1593mhz. Our chip should have 2x1.5ghz for general use and 2x2.1ghz for high performance tasks.
But in stock as in custom Roms, I see all CPUs locked down, max freq 1593mhz and no control over queue processing, either from hotplug or CPU front. Is there something I missed? Or LG just lied to us?
I know from thermal point of view that our device would not be able to sustain 2.1ghz for a long time, but if the frequency is not even available, it is a serious matter... +500mhz is not something to overlook!
Click to expand...
Click to collapse
So... I was freaked out after reading this thread, so i rushed to check using cpu Z and it turned out that mine is clocked at 2.15, so i don't know what is wrong u
The Snapdragon 820 inside the LG G5 has a quad-core processor which has 2 cores clocked at 2.15 GHz and two other cores clocked at 1.6 GHz (1593 MHz), it's the way the manufacturer (Qualcomm) decided the processor to be, the LG G5 is not underclocked. Some users may get different results in applications like CPU-Z or AnTuTu depending on which core the application is based on.
Android_420 said:
The Snapdragon 820 inside the LG G5 has a quad-core processor which has 2 cores clocked at 2.15 GHz and two other cores clocked at 1.6 GHz (1593 MHz), it's the way the manufacturer (Qualcomm) decided the processor to be, the LG G5 is not underclocked. Some users may get different results in applications like CPU-Z or AnTuTu depending on which core the application is based on.
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The frequency table shown by kernel adiutor (or any kernel tweaking software) shows ranges 307-1593 for all processors.
I know the hardware behind, my first though was that LG underclocked it. Now I see the phone just hides its behavior and does not show the real table (or the available software is not able to see it).
We will need additional kernel development in order to effectively control the core speeds in our devices.
Case closed, thank you for the responses.
Floodland said:
The frequency table shown by kernel adiutor (or any kernel tweaking software) shows ranges 307-1593 for all processors.
I know the hardware behind, my first though was that LG underclocked it. Now I see the phone just hides its behavior and does not show the real table (or the available software is not able to see it).
We will need additional kernel development in order to effectively control the core speeds in our devices.
Case closed, thank you for the responses.
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Click to collapse
old versions of kernel auditor are buggy with the g5, they see it as a single quad core instead of big/little dual 2 cores. You need the newest kernel auditor.

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