27 Jul, 2019

1 commit

• 6b66d2ee4   ARM: dts: am57xx: Disable voltage switching for SD card ... Browse Code »

  If UHS speed modes are enabled, a compatible SD card switches down to 1.8V
  during enumeration. If after this a software reboot/crash takes place and
  on-chip ROM tries to enumerate the SD card, the difference in
  IO voltages (host @ 3.3V and card @ 1.8V) may end up damaging the card.

  The fix for this is to have support for power cycling the card in
  hardware (with a PORz/soft-reset line causing a power cycle of the card).
  Because the beaglebone X15 (rev A,B and C), am57xx-evms and am57xx-idks don't
  have this capability, disable voltage switching for these boards.

  The major effect of this is that the maximum supported speed mode is now
  high speed(50 MHz) down from SDR104(200 MHz).

  Signed-off-by: Faiz Abbas

  Faiz Abbas

  2019-07-27 10:24:11 +0800  

12 Sep, 2017

1 commit

• 4ddaa6ce2   arm: dts: dra7: sync DT with latest Linux ... Browse Code »

  Sync all dra7* specific dts files with the upstream
  kernel including changes queued for 4.14

  https://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git/log/?h=omap-for-v4.14/dt-v3

  Signed-off-by: Lokesh Vutla
  Reviewed-by: Tom Rini

  Lokesh Vutla

  2017-09-12 04:19:48 +0800