linux/arch/arm/plat-omap/include/plat
Joel Fernandes 912e663127 ARM: OMAP2+: Disable POSTED mode for errata i103 and i767
Enabling of Posted mode is seen to cause problems on dmtimer modules on AM33xx
(much like other OMAPs).  Reference discussions on forums [1] [2]. Earlier
patch solving this on other OMAPs [3].

For OMAP SoCs with this errata, the fix has been to not enable Posted mode.
However, on some SoCs (atleast AM33xx) which carry this errata, Posted mode
is enabled on reset. So we not only need to ignore enabling of the POSTED bit
when the timer is requested, but also disable Posted mode if errata is present.

[1] http://e2e.ti.com/support/arm/sitara_arm/f/791/t/285744.aspx
[2] http://e2e.ti.com/support/arm/sitara_arm/f/791/t/270632.aspx
[3] http://www.spinics.net/lists/linux-omap/msg81770.html

Cc: stable@vgerk.kernel.org
Reported-by: Russ Dill <russ.dill@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-11-26 15:03:36 -08:00
..
counter-32k.h ARM: OMAP: Remove plat-omap/common.h 2012-10-31 15:37:13 -07:00
cpu.h ARM: OMAP2+: Drop plat/cpu.h for omap2plus 2012-12-17 10:50:41 -08:00
dmtimer.h ARM: OMAP2+: Disable POSTED mode for errata i103 and i767 2013-11-26 15:03:36 -08:00
i2c.h ARM: OMAP: Fix i2c cmdline initcall for multiplatform 2013-01-11 11:24:19 -08:00
sram.h ARM: OMAP: Introduce common omap_map_sram() and omap_sram_reset() 2012-10-31 10:14:13 -07:00
timex.h ARM: OMAP2+: Get rid of custom OMAP_32K_TIMER_HZ 2013-02-01 14:51:22 -08:00