LPJ value in bootargs

JitendraJain at Emerson.com JitendraJain at Emerson.com
Sun Sep 28 22:37:05 CDT 2008


LPJ stands for Loops per jiffies. This avoids overhead of performing
calibration during boot time and helps in reduction of about 250 ms
during bootup time.



From: Albert Burbea [mailto:albertbu at gmail.com] 
Sent: Monday, September 29, 2008 1:19 AM
To: Jain, Jitendra [PROTOOL/RTC/INPU]
Cc: davinci-linux-open-source at linux.davincidsp.com
Subject: Re: LPJ value in bootargs



what lpj is ???


2008/9/26 <JitendraJain at emerson.com>


Hi all,
I want to reduce bootup time on DM355 based board.
One of the technique is to use correct LPJ value in the bootargs.

I have found how to get LPJ value on our board.
But there is one caution that if we use incorrect LPJ value it might
damage the board.

So I want to know what should be allowable range of LPJ value which will
not damage the board and helps in reducing bootup time.
Like suppose LPJ value for my board is 538624, but lets say I am using
(538624 +/- 50) than it won't affect my board and if I am using
(538624 +/- 100) or more that it will damage my board.

I want to know acceptable LPJ value range on DM355 based board.

Thanks in advance.


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Albert Burbea
Harishonim 8
Ramat Gan 52502, Israel
Tel/Fax + 972-3-7526016
Mobile: +972-52-3541842

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