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Root Overclocking Ally

ccsoccer03 said:
Agreed. There aren't many things that interest me in root other than asthetics and wifi tether. An overclock with underclock on sleep would do this phone wonders. Even typing on this website on my phone is sluggish.
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That would be my reason for overclocking my Ally. I'd like it to be a bit snappier when loaded, but to save battery life, it could step back to 400mhz or so when it's idle.
JL
 
^^^^^ yea definitely, if your willing to release a beta of the kernel, i would be glad to test drive it and report my findings. PLEASE, I NEED TO DO SOMETHING WITH MY ALLY LOL
 
drellisdee said:
And stable and cool. That would be a yes. The palm pixi shares the same processor as ally as the pre is different. I believe I'm the first in the world to OC a msm7627 stable.
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Oh, well then
ARENT
YOU
SPECIAL.

Seriously though, that's awesome. You must be omnipotent, as well.
 
upper limit will be 800MHz, stable. True for the same chipset in the pre. While I have seen a few moto droids at speeds higher than this, the lack of a dedicated gpu in the ally is a real hindrance to any sort of significant speed increase.
 
badandy2021 said:
I think 800 mhz will be the upper limits of what this device can achieve, seeing as how the chipset doesn't include a GPU. Too bad that by the time anybody gets a workable OC method stable and in the open, 2.2 and it's speed improvements will have made this effort redundant. Still, no one ever OCed anything because it was a good investment :D
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But,if overclocking can be made stable hardware-wise, then an OC'd CPU on 2.2 will be even better.
JL
 
badandy2021 said:
upper limit will be 800MHz, stable. True for the same chipset in the pre. While I have seen a few moto droids at speeds higher than this, the lack of a dedicated gpu in the ally is a real hindrance to any sort of significant speed increase.
Click to expand...

Actually the Ally's processor is slightly different from the pre, according to Drellisdee. But if it was the same, we'd probably be able to get it to 1GHz or higher. The guys working on the Pre have gotten it to 1GHz, and are working on getting it even higher.
 
lolbug said:
Actually the Ally's processor is slightly different from the pre, according to Drellisdee. But if it was the same, we'd probably be able to get it to 1GHz or higher. The guys working on the Pre have gotten it to 1GHz, and are working on getting it even higher.
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Our processor & Palm Pixi MSM7627

Our device spec sheet VS740

Palm Pre has OMAP 3430

Here is the freq table I'm using currently.
Code: 
/* 7x27 normal with GSM capable modem - PLL0 and PLL1 swapped */
static struct clkctl_acpu_speed pll0_960_pll1_245_pll2_1200[] = {
    { 0, 19200, ACPU_PLL_TCXO, 0, 0, 19200, 0, 0, 30720 },
    { 0, 120000, ACPU_PLL_0, 4, 7,  60000, 1, 3,  61440 },
    { 1, 122880, ACPU_PLL_1, 1, 1,  61440, 1, 3,  61440 },
    { 0, 200000, ACPU_PLL_2, 2, 5,  66667, 2, 4,  61440 },
    { 1, 245760, ACPU_PLL_1, 1, 0, 122880, 1, 4,  61440 },
    { 1, 320000, ACPU_PLL_0, 4, 2, 160000, 1, 5, 122880 },
    { 0, 400000, ACPU_PLL_2, 2, 2, 133333, 2, 5, 122880 },
    { 1, 480000, ACPU_PLL_0, 4, 1, 160000, 2, 6, 122880 },
    { 1, 600000, ACPU_PLL_2, 2, 1, 200000, 2, 7, 122880 },
    //{ 1, 652800, ACPU_PLL_2, 2, 1, 163200, 3, 7, 122880 },
    //{ 1, 710400, ACPU_PLL_2, 2, 0, 175200, 3, 7, 122880 },
    { 1, 729600, ACPU_PLL_2, 2, 0, 182400, 3, 7, 122880 },
    { 1, 748800, ACPU_PLL_2, 2, 0, 187200, 3, 7, 122880 },
    { 1, 768000, ACPU_PLL_2, 2, 0, 192000, 3, 7, 122880 },
    { 1, 787200, ACPU_PLL_2, 2, 0, 196800, 3, 7, 122880 },
    //{ 1, 806400, ACPU_PLL_2, 2, 0, 201600, 3, 7, 122880 },
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0}, {0, 0, 0} }
};
The 6th column is the AHB bus which has a max khz of 200000 on msm7x27 models. The 7th column is the ahb divider which is (x + 1) which the highest value allowed is (3 + 1) =4 so its Clock speed 806400/4 = 201600. So the highest clock speed without pushing the ahb over its max is 787200.

Also a good read is Overclocking 101 Read the part about the wafers on the chips construction. That is why the max speed your processor can handle is different amongst the same models as its due to construction quality.
 
badandy2021 said:
upper limit will be 800MHz, stable. True for the same chipset in the pre. While I have seen a few moto droids at speeds higher than this, the lack of a dedicated gpu in the ally is a real hindrance to any sort of significant speed increase.
Click to expand...

There is actually a *stable* 1GHz Pre kernel.

drellisdee said:
So the highest clock speed without pushing the ahb over its max is 787200.
Click to expand...

Ah, I see. Interesting...
 
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