Overclocking BCM5356 ? eg RT-N10, N10+, WGR614v10, WNR1000v3

Post new topic   Reply to topic    DD-WRT Forum Forum Index -> Broadcom SoC based Hardware
Author Message
jwh7
DD-WRT Guru


Joined: 25 Oct 2013
Posts: 2562
Location: Indy

PostPosted: Sat Jul 25, 2015 0:54    Post subject: Overclocking BCM5356 ? eg RT-N10, N10+, WGR614v10, WNR1000v3 Reply with quote
The BCM5356 is rated at 333MHz (clkfreq=333,166,83). I believe it is the same as the BCM4716/7/8 (can't find where I came across that yesterday), and thus this is applicable:
"http://www.dd-wrt.com/wiki/index.php/Overclocking_BCM_47xx_CPU's" [excerpt below]
(see next post why this is in quotations)

I saw some obscure google hits (specific models were also unclear) at other sites about setting speeds of clkfreq=354,177,88 and 373,186,93, and even some to 400,200,100. Another said the latter bricked them...so I'm wondering if/what anyone has tested in regard to this? I've always clocked WRT54G*'s to 250MHz w/o a second thought; and my WNDR4000 to (its chips rated speed of) 533MHz...but this one I'm more leery of, since I don't know how the CFE will handle it.
Code:
{ 333, 166,  83, 0x11100070, 0x000c0603, 0x03200000, 0x48000000, 0 },
{ 333, 166, 166, 0x11100070, 0x00060603, 0x03200000, 0x40000000, 0 },
{ 340, 226, 113, 0x11100070, 0x000c0604, 0x04400000, 0x38000000, 0 },
{ 354, 177,  88, 0x11500070, 0x000c0603, 0x10a00000, 0x48000000, 4 },
{ 373, 186,  93, 0x11100070, 0x000c0603, 0x03800000, 0x48000000, 0 },
{ 400, 133, 133, 0x11100070, 0x000c0c04, 0x05000000, 0x60000000, 0 },
{ 400, 160,  80, 0x11100070, 0x00140a04, 0x05000000, 0x58000000, 0 },
{ 400, 160, 160, 0x11100070, 0x000a0a04, 0x05000000, 0x50000000, 0 },
{ 400, 200, 100, 0x11100070, 0x000c0603, 0x03c00000, 0x48000000, 0 },
Update: in searching for more PLL tables (other routers), I found that the 5356 uses a 25 MHz oscillator, and does not share w/ the (20 MHz) 4716, 4717, 4718, 47162 & 5357. It has no entries b/t 333 and 400 [DD table is here], so there I go. :-/
Code:
static uint32 BCMINITDATA(pll25mhz_table)[][8] = {
/* cpu, ddr, axi, pllctl12,  pllctl13,   pllctl14,   pllctl15,   pllctl16 */
[...]
{ 300, 200, 100, 0x11100070, 0x000c0604, 0x03000000, 0x38000000, 0x200005c0 },
{ 332, 110, 110, 0x11100070, 0x000c0c04, 0x03540000, 0x6047ae14, 0x202c2820 },
{ 332, 133, 133, 0x11100070, 0x000a0a04, 0x03540000, 0x5047ae14, 0x202c2820 },
{ 332, 166,  83, 0x11100070, 0x00100804, 0x03540000, 0x4847ae14, 0x202c2820 },
{ 333, 111, 111, 0x11100070, 0x00090903, 0x02800000, 0x60000000, 0x200005c0 },
{ 333, 133, 133, 0x11100070, 0x000f0f06, 0x05000000, 0x50000000, 0x38000700 },
{ 333, 166,  83, 0x11100070, 0x000c0603, 0x02800000, 0x48000000, 0x200005c0 },
{ 333, 166, 166, 0x11100070, 0x00060603, 0x02800000, 0x40000000, 0x200005c0 },
{ 400, 133, 133, 0x11100070, 0x000c0c04, 0x04000000, 0x60000000, 0x200005c0 },
{ 400, 200, 100, 0x11100070, 0x000c0603, 0x03000000, 0x48000000, 0x200005c0 },
{ 400, 266, 133, 0x11100070, 0x000c0604, 0x04000000, 0x38000000, 0x200005c0 },
{ 500, 166,  83, 0x11100070, 0x000c0602, 0x02800000, 0x68000000, 0x200005c0 },
{ 500, 166, 166, 0x11100070, 0x00060602, 0x02800000, 0x60000000, 0x200005c0 },
{ 500, 200, 100, 0x11100070, 0x000a0502, 0x02800000, 0x58000000, 0x200005c0 },
{ 500, 250, 125, 0x11100070, 0x00080402, 0x02800000, 0x48000000, 0x200005c0 },
Update2: For my future reference, the older k2.4 PLL's are setup here and (even older...) here.
_________________
# NAT/SFE/CTF: limited speed w/ DD # Repeater issues # DD-WRT info: FAQ, Builds, Types, Modes, Changes, Demo #
x64 OPNsense 20.7|FT2020.4: EA6900v1.1@1GHz, F7D8302@532|DD 44062: DIR-810L, WNDR4500v2 & 4000@533,
R6300v1, RT-N66U@663, E1500@353, WRT54G{Lv1.1,Sv6}@250
|OpenWRT 19.7.3: RT-ACRH13, R6220, WNDR3700v4


Last edited by jwh7 on Tue Jul 11, 2017 20:04; edited 10 times in total
Sponsor
jwh7
DD-WRT Guru


Joined: 25 Oct 2013
Posts: 2562
Location: Indy

PostPosted: Sat Jul 25, 2015 1:04    Post subject: Reply with quote
Wow the form parser really did not like that link. Having a link with an apostrophe, and using the [url] tags, makes the entire message empty...and posting w/o the latter truncates the " 's " from the link. Anyway, -this- is the link (had to enclose it in quotes - will update the first post too, since it otherwise directs to the wrong, and empty, page):
"http://www.dd-wrt.com/wiki/index.php/Overclocking_BCM_47xx_CPU's"
Escape character didn't work either; you'll have to copy/paste.

_________________
# NAT/SFE/CTF: limited speed w/ DD # Repeater issues # DD-WRT info: FAQ, Builds, Types, Modes, Changes, Demo #
x64 OPNsense 20.7|FT2020.4: EA6900v1.1@1GHz, F7D8302@532|DD 44062: DIR-810L, WNDR4500v2 & 4000@533,
R6300v1, RT-N66U@663, E1500@353, WRT54G{Lv1.1,Sv6}@250
|OpenWRT 19.7.3: RT-ACRH13, R6220, WNDR3700v4
jwh7
DD-WRT Guru


Joined: 25 Oct 2013
Posts: 2562
Location: Indy

PostPosted: Wed Jul 29, 2015 17:16    Post subject: Reply with quote
C'mon I know some of you have overclocked at least the RT-N10 and RT-N10+...?!. What speeds worked, did you add a heatsink, what speeds failed, and did you have to reset nvram to fix?

Guess I may just have to do some blind testing next time I'm using my recently adopted WGR...

_________________
# NAT/SFE/CTF: limited speed w/ DD # Repeater issues # DD-WRT info: FAQ, Builds, Types, Modes, Changes, Demo #
x64 OPNsense 20.7|FT2020.4: EA6900v1.1@1GHz, F7D8302@532|DD 44062: DIR-810L, WNDR4500v2 & 4000@533,
R6300v1, RT-N66U@663, E1500@353, WRT54G{Lv1.1,Sv6}@250
|OpenWRT 19.7.3: RT-ACRH13, R6220, WNDR3700v4
jwh7
DD-WRT Guru


Joined: 25 Oct 2013
Posts: 2562
Location: Indy

PostPosted: Sun Aug 23, 2015 17:55    Post subject: Reply with quote
Good news and bad news...

So I decided to try it out, since I put a heatsink on and drilled some cooling holes around the middle of the case above (looks pretty good too). Running stock, the heatsink was running around 43-44degC (IR meter, not internal), so I felt it was my duty to get it hotter. Smile

Got into telnet...
Code:
nvram set clkfreq=354,177,88
nvram commit
reboot

[/nervous]

So the good news...it rebooted, and I could still access the Web GUI and telnet. [/relieved]
...checked the cpu speed and found it did not recognize the 354/177/88 setting, but nvram still showed it...
Code:
# nvram get clkfreq
354,177,88
# cat /proc/cpuinfo
system type             : Broadcom BCM5356 chip rev 1
processor               : 0
cpu model               :  V4.9
BogoMIPS                : 199.88
wait instruction        : no
microsecond timers      : yes
tlb_entries             : 64
extra interrupt vector  : no
hardware watchpoint     : yes
VCED exceptions         : not available
VCEI exceptions         : not available
unaligned_instructions  : 6120
System clocks
        (cpu/mem/si/xtal)       : 400/200/100/25 Mhz.

!!!
For those playing at home...the CFE shifted to the next -higher- allowed (apparently) speed; seems like bad practice. :-/
However, everything is working, not that I've actually tried internet or wireless yet. And the SoC is now still only at ~48degC. For comparison, the WRT54GLv1.1 running at 250MHz (200 stock underclock) w/ heatsink is ~55degC.
The wife will be swapping it out w/ the WRT54GSv6 when she gets back to Chicago (she likes the looks better)...so I will update once its in full service.
I'm still amazed at how many features the stock WNR1000v3 f/w has...none of which will be utilized at the condo.

Of course the disclaimer...
Don't try this unless you're willing to risk bricking!

_________________
# NAT/SFE/CTF: limited speed w/ DD # Repeater issues # DD-WRT info: FAQ, Builds, Types, Modes, Changes, Demo #
x64 OPNsense 20.7|FT2020.4: EA6900v1.1@1GHz, F7D8302@532|DD 44062: DIR-810L, WNDR4500v2 & 4000@533,
R6300v1, RT-N66U@663, E1500@353, WRT54G{Lv1.1,Sv6}@250
|OpenWRT 19.7.3: RT-ACRH13, R6220, WNDR3700v4
jwh7
DD-WRT Guru


Joined: 25 Oct 2013
Posts: 2562
Location: Indy

PostPosted: Mon Aug 24, 2015 1:43    Post subject: Reply with quote
Since y'all clearly care... Rolling Eyes
jwh7 wrote:
...so I will update once its in full service.
Up and running, speed and signal tested a-ok. Not bad for a free spare router from my brother-in-law. Smile
_________________
# NAT/SFE/CTF: limited speed w/ DD # Repeater issues # DD-WRT info: FAQ, Builds, Types, Modes, Changes, Demo #
x64 OPNsense 20.7|FT2020.4: EA6900v1.1@1GHz, F7D8302@532|DD 44062: DIR-810L, WNDR4500v2 & 4000@533,
R6300v1, RT-N66U@663, E1500@353, WRT54G{Lv1.1,Sv6}@250
|OpenWRT 19.7.3: RT-ACRH13, R6220, WNDR3700v4
Display posts from previous:    Page 1 of 1
Post new topic   Reply to topic    DD-WRT Forum Forum Index -> Broadcom SoC based Hardware All times are GMT

Navigation

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum