1. 05 May, 2014 3 commits
  2. 26 Apr, 2014 1 commit
  3. 25 Apr, 2014 14 commits
  4. 24 Apr, 2014 20 commits
  5. 23 Apr, 2014 2 commits
    • Tony Lindgren's avatar
      ARM: dts: Fix GPMC timings for LAN9220 · dcf21919
      Tony Lindgren authored
      I've noticed occasional random oopsing on my gateway
      machine since I upgraded it to use device tree based
      booting. As this machine has worked reliably before
      that for a few years, pretty much the only difference
      was narrowed down to the GPMC timings. Turns out that
      for legacy based booting we are using bootloader timings
      for GPMC for smsc911x. With device tree we are passing
      the timings in the .dts file, and the device tree
      timings are not quite suitable for LAN9920.
      
      Enabling DEBUG in gpmc.c I noticed that the device tree
      configured timings are different from the the known
      working bootloader timings. So let's fix the timings to
      match the bootloader timings when looked at the gpmc
      dmesg output with DEBUG enabled.
      
      The changes were done by multiplying the bootloader
      tick values by six to get the nanosecond value for
      device tree. This is not generic from the device point
      of view as the calculations should be based on the device
      timings. Anyways, further improvments can be done based
      on the timings documentation for LAN9220. But let's first
      get things to a known good working state.
      
      Note that we still need to change the timings also for
      sb-t35 also as it has two LAN9220 instances on GPMC and
      we can currently include the generic timings only once.
      
      Also note that any boards that have LAN9221 instead of
      LAN9220 should be updated to use omap-gpmc-smsc9221.dtsi
      instead of omap-gpmc-smsc911x.dtsi. The LAN9221 timings
      are different from LAN9220 timings.
      
      Cc: Christoph Fritz <chf.fritz@googlemail.com>
      Cc: Dmitry Lifshitz <lifshitz@compulab.co.il>
      Cc: Javier Martinez Canillas <javier@dowhile0.org>
      Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      dcf21919
    • Tony Lindgren's avatar
      ARM: dts: Fix GPMC Ethernet timings for omap cm-t sbc-t boards for device tree · de9949a4
      Tony Lindgren authored
      Looks like we have wrong GPMC timings we have for the cm-t and
      sbc-t boards. This can cause occasional strange errors with at
      least doing an rsync of large files or doing apt-get dist-upgrade.
      
      Let's fix the issue in two phases. First let's simplify cm-t and
      sbc-t to use the shared omap-gpmc-smsc911x.dtsi to avoid fixing
      the issue in multiple places. Then we can fix the timings in
      a single place with a follow-up patch.
      
      Cc: Dmitry Lifshitz <lifshitz@compulab.co.il>
      Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      de9949a4