lkml.org 
[lkml]   [2011]   [Sep]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 4/8] regmap: Add the LZO cache support
    On Mon, Sep 05, 2011 at 09:40:45PM +0000, Matthieu CASTET wrote:
    > Dimitris Papastamos <dp <at> opensource.wolfsonmicro.com> writes:

    Don't drop CCs from mails if you want people to actually read them.

    > > This patch adds support for LZO compression when storing the register
    > > cache.

    > > For a typical device whose register map would normally occupy 25kB or 50kB
    > > by using the LZO compression technique, one can get down to ~5-7kB.

    > Do you have example of such case ?

    > Caching 25kB or 50kB looks crazy.

    Audio CODECs for smartphones can easily have well over a thousand
    registers (excluding things like DSP memories) connected over
    rel;atively slow buses like I2C or SPI with lots of read/modify/write
    cycles (so cutting out the physical read is a real win) and we want to
    power them off when not in use.


    \
     
     \ /
      Last update: 2011-09-07 21:21    [W:0.019 / U:0.644 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site