Commit graph

6 commits

Author SHA1 Message Date
Rafaël Carré
49c25816f0 Sansa AMS i2c : fix 2 problems identified by Jack Halpin & Bertrik Sikken
i2c clock frequency uses pclk as reference, not plla
i2c clock divider is only 10 bits, not 16

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20929 a1c6a512-1295-4272-9138-f99709370657
2009-05-14 09:36:56 +00:00
Rafaël Carré
8033342d0f Sansa AMS : remove mci_set_clock_divider()
Inline the 2 uses, and use a preprocessor sanity check for identification frequency

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20924 a1c6a512-1295-4272-9138-f99709370657
2009-05-13 08:27:33 +00:00
Rafaël Carré
adb978a44d Sansa AMS: Various fixes/enhancements for clock frequencies
Fix CGU_DBOP setting

Set PCLK to the exact frequency (62MHz, not the maximal frequency)

Use a better comment for CLK_DIV macro

Use preprocessor safety checks for clock divider sizes to avoid future mistakes (not for SD_IDENT frequency since that check is handled by mci_set_clock_divider)

Use maximal IDE frequency of 66MHz (like OF), not 90MHz like written in AS3525 datasheet. The IDE chip is somehow linked to internal storage, and a too high frequency could affect the storage driver.

Use the same DBOP frequency of 32MHz for all models (like OF, verified clip, fuze, e200v2 and m200v4), compromise between performance and battery life could be added in the future for each target
Performance increase on Sansa Fuze with DBOP freq. set to 64MHz: +12% fps for lcd_update, +1% fps for yuv

Thanks to daytona955 on the forums for his help

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20923 a1c6a512-1295-4272-9138-f99709370657
2009-05-13 08:27:20 +00:00
Björn Stenberg
9e3844db07 Updated Fuze button code. FS#9645 by Thomas Martitz.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19629 a1c6a512-1295-4272-9138-f99709370657
2008-12-31 21:02:56 +00:00
Michael Giacomelli
c97f640060 Commit FS#9679 by Thomas Martitz. Adds c200v2 to the target tree. Has some buttons defined, a bootloader, and stubs for most drivers.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19574 a1c6a512-1295-4272-9138-f99709370657
2008-12-24 04:10:18 +00:00
Rafaël Carré
45711ac286 Sansa AMS: centralize clock settings in clock-target.h
Reorder system_init() to initialize peripherals not only in bootloader
Use a 65MHz PCLK (and memclk) which will be needed for realtime decoding

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19330 a1c6a512-1295-4272-9138-f99709370657
2008-12-04 20:04:31 +00:00