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3 commits

Author SHA1 Message Date
Faiz Abbas
6b66d2ee47 ARM: dts: am57xx: Disable voltage switching for SD card
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@ti.com>
2019-07-26 22:24:11 -04:00
Lokesh Vutla
4ddaa6ce28 arm: dts: dra7: sync DT with latest Linux
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 <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-09-11 16:19:48 -04:00
Lokesh Vutla
a0c0b97c6b ARM: dts: am57xx: sync DT with latest Linux
Sync all am57xx based dts files with latest Linux

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-12-04 13:54:53 -05:00