diff options
| author | Nishanth Menon <nm@ti.com> | 2010-12-20 21:05:06 +0100 |
|---|---|---|
| committer | Kevin Hilman <khilman@deeprootsystems.com> | 2010-12-21 23:45:50 +0100 |
| commit | 458e999eb14a301d4176783c8fcb277f5d009b4e (patch) | |
| tree | 7300efdef971f91e4d7601f9bc1174fe9716f313 /arch/arm/mach-omap2/pm.h | |
| parent | OMAP3: pm: introduce errata handling (diff) | |
| download | linux-458e999eb14a301d4176783c8fcb277f5d009b4e.tar.xz linux-458e999eb14a301d4176783c8fcb277f5d009b4e.zip | |
OMAP3630: PM: Erratum i608: disable RTA
Erratum id: i608
RTA (Retention Till Access) feature is not supported and leads to device
stability issues when enabled. This impacts modules with embedded memories
on OMAP3630
Workaround is to disable RTA on boot and coming out of core off.
For disabling RTA coming out of off mode, we do this by overriding the
restore pointer for 3630 as the first point of entry before caches are
touched and is common for GP and HS devices. To disable earlier than
this could be possible by modifying the PPA for HS devices, but not for
GP devices.
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Tony Lindgren <tony@atomide.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[ambresh@ti.com: co-developer]
Signed-off-by: Ambresh K <ambresh@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-omap2/pm.h')
| -rw-r--r-- | arch/arm/mach-omap2/pm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h index 0348fd717f61..8d9aa3e0f635 100644 --- a/arch/arm/mach-omap2/pm.h +++ b/arch/arm/mach-omap2/pm.h @@ -85,6 +85,8 @@ extern unsigned int save_secure_ram_context_sz; extern unsigned int omap24xx_cpu_suspend_sz; extern unsigned int omap34xx_cpu_suspend_sz; +#define PM_RTA_ERRATUM_i608 (1 << 0) + #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) extern u16 pm34xx_errata; #define IS_PM34XX_ERRATUM(id) (pm34xx_errata & (id)) |