arm: mx31: use common timer functions
authorAndrew Ruder <andrew.ruder@elecsyscorp.com>
Tue, 12 Aug 2014 14:26:00 +0000 (09:26 -0500)
committerStefano Babic <sbabic@denx.de>
Tue, 16 Sep 2014 10:51:46 +0000 (12:51 +0200)
commit93a0ea501e1eca1ae5d7d2624906b656c765e5e8
treebb92988867941e0b54333a825ff5bea04e6e6bc5
parent4c97f16911e229f6d5bbea5bee52449916e5fa92
arm: mx31: use common timer functions

This patch moves mx31 to the common timer functions added in commit

  8dfafdd - Introduce common timer functions <Rob Herring>

The (removed) mx31 timer code (specifically __udelay()) could deadlock at
the 32-bit boundary of get_ticks().  get_ticks() returned a 32-bit value
cast up to a 64-bit value.  If get_ticks() + tmo in __udelay() crossed
the 32-bit boundary, the while condition became unconditionally true and
locks the processor.  Rather than patch the specific mx31 issues, simply
move everything over to the common code.

Signed-off-by: Andrew Ruder <andrew.ruder@elecsyscorp.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Helmut Raiger <helmut.raiger@hale.at>
arch/arm/cpu/arm1136/mx31/timer.c
arch/arm/include/asm/arch-mx31/imx-regs.h