]> git.sur5r.net Git - u-boot/commit
sunxi: dram: Respect the DDR3 reset timing requirements
authorSiarhei Siamashka <siarhei.siamashka@gmail.com>
Sun, 3 Aug 2014 02:32:41 +0000 (05:32 +0300)
committerHans de Goede <hdegoede@redhat.com>
Tue, 12 Aug 2014 06:42:32 +0000 (08:42 +0200)
commite626d2d446996b4b1cd16bf65b42c080985d8a84
tree5fbf9ee32c38d0ca8b3a6576c0f031975659e0de
parentf2577967738f923571b7156ad46ef91d9fa8d9f8
sunxi: dram: Respect the DDR3 reset timing requirements

The RESET pin needs to be kept low for at least 200 us according
to the DDR3 spec. So just do it the right way.

This issue did not cause any visible major problems earlier, because
the DRAM RESET pin is usually already low after the board reset. And
the time gap before reaching the sunxi u-boot DRAM initialization
code appeared to be sufficient.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
arch/arm/cpu/armv7/sunxi/dram.c