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Cástor Muñoz 32b4558511 iPod Classic: initialize USB power configuration
This patch limits the drawn USB current to 100/500mA, instead of
the actual 200/1000mA settings. It also initializes other USB power
related GPIOs.

Solves some USB disconnect issues: FS#12990, FS#12956. I am using a
powered USB HUB with no problems (Vusb=5.05V unloaded), but there
are lots of USB disconnects when using the motherboard USB ports
(Vusb=4.91V), this patch solves all my issues.

Actually, it seems that the USB current drain is limited to 1000mA,
when a load peak occurs most USB2 ports deliver more than 500mA, as
current consumption increases the USB voltage decreases, an excesive
voltage drop produces USB disconnections. Limiting USB current drain
to 500mA also limits the voltage drop, preventing subsequent USB
failures.

Anyway, to minimize voltage drop, it is recommended to use quality
cables and preferably connect to USB ports with higher Vusb.

Change-Id: I1b931aa18ec93bfd1214e475a72e42893eff52f6
2015-10-07 06:15:04 +02:00
android Don't require a specific BUILD_TOOLS_VERSION. 2014-09-25 00:26:25 +02:00
apps iAP: lingo 1 (microphone) 2015-10-07 06:15:04 +02:00
backdrops Add Cabbiev2 port for 128x96x16 targets (Samsung YH-820), made by me. 2014-03-27 19:50:48 +00:00
bootloader AMS: fix usb initialization in bootloader 2015-06-02 02:02:51 +02:00
debian Prepare new maemo release 2013-03-10 12:12:38 +01:00
docs Add Thomas White to CREDITS 2015-04-19 12:33:07 +02:00
firmware iPod Classic: initialize USB power configuration 2015-10-07 06:15:04 +02:00
flash Limit more variables to file scope 2015-01-11 21:40:51 +01:00
fonts Remove superfluous executable bits on a bunch of files. 2011-06-08 14:22:03 +00:00
gdb Limit more variables to file scope 2015-01-11 21:40:51 +01:00
icons wpsbuild: Rewrite to fix various issues and support .fms 2012-06-10 21:20:36 +02:00
lib mp3_enc.c: fix MP3 recording at 32 kHz sample rate 2015-07-17 01:03:38 +02:00
manual Snake2: add 128x96x16 bitmaps 2015-09-28 23:19:19 +02:00
packaging Prepare unofficial pandora release 2013-03-10 14:09:30 +01:00
rbutil Fix USB IDs for Sansa c200v2. 2015-06-20 20:42:59 +02:00
tools Fix rebuilding librbspeex on OS X and make rm work on Windows. 2015-06-20 20:47:35 +02:00
uisimulator Fix red/yellow round #2 2015-01-12 13:25:14 +01:00
utils qeditor: fix uninitialised variable 2015-10-03 23:09:35 +02:00
wps lcd-24bit: Introduce a 24-bit mid-level LCD driver 2014-06-21 00:15:53 +02:00
.gitattributes Add a gitattributes file for the migration. 2011-12-01 14:14:59 +00:00
.gitignore Add buflib tests to .gitignore 2015-01-03 18:21:59 +01:00

               __________               __   ___.
     Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
     Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
     Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
     Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
                       \/            \/     \/    \/            \/

Build Your Own Rockbox

1. Clone 'rockbox' from git (or extract a downloaded archive).

   $ git clone git://git.rockbox.org/rockbox

     or

   $ tar xjf rockbox.tar.bz2

2. Create a build directory, preferably in the same directory as the firmware/
   and apps/ directories. This is where all generated files will be written.

   $ cd rockbox
   $ mkdir build
   $ cd build

3. Make sure you have sh/arm/m68k-elf-gcc and siblings in the PATH. Make sure
   that you have 'perl' in your PATH too. Your gcc cross compiler needs to be
   a particular version depending on what player you are compiling for. These
   can be acquired with the rockboxdev.sh script in the /tools/ folder of the
   source, or will have been included if you've installed one of the
   toolchains or development environments provided at http://www.rockbox.org/

   $ which sh-elf-gcc
   $ which perl

4. In your build directory, run the 'tools/configure' script and enter what
   target you want to build for and if you want a debug version or not (and a
   few more questions). It'll prompt you. The debug version is for making a
   gdb version out of it. It is only useful if you run gdb towards your target
   Archos.

   $ ../tools/configure

5. *ploink*. Now you have got a Makefile generated for you.

6. Run 'make' and soon the necessary pieces from the firmware and the apps
   directories have been compiled, linked and scrambled for you.

   $ make
   $ make zip

7. unzip the rockbox.zip on your music player, reboot it and
   *smile*.

If you want to build for more than one target, just create several build
directories and create a setup for each target:

   $ mkdir build-fmrecorder
   $ cd build-fmrecorder
   $ ../tools/configure

   $ mkdir build-player
   $ cd build-player
   $ ../tools/configure

Questions anyone? Ask on the mailing list. We'll be happy to help you!