diff options
| author | Mayuresh Kulkarni <mkulkarni@nvidia.com> | 2011-09-15 14:56:10 +0530 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 00:57:42 -0700 |
| commit | b6de348b94e96a59ad74301e7effede2f8a9d97c (patch) | |
| tree | 6309d40350009f22c9b86ea847993d356ec5cc45 /arch/arm/mach-tegra/sleep-t20.S | |
| parent | da897e21c4ebe8d62752b93dd6cee520ad3d3fea (diff) | |
arm: tegra: pm: issue a pl310 cache sync for tegra2
this needs to be done when the lp2 is aborted before the
stipulated programmed time to wake-up
for bug 867094
Change-Id: I02102ed8afa69d782de5950118352e80edc79df4
Signed-off-by: Mayuresh Kulkarni <mkulkarni@nvidia.com>
Reviewed-on: http://git-master/r/52581
Reviewed-by: Jin Qian <jqian@nvidia.com>
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Reviewed-by: Scott Williams <scwilliams@nvidia.com>
Rebase-Id: R5938771982b7cceb9ea23ee73852ca8b9b3490ae
Diffstat (limited to 'arch/arm/mach-tegra/sleep-t20.S')
| -rw-r--r-- | arch/arm/mach-tegra/sleep-t20.S | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/sleep-t20.S b/arch/arm/mach-tegra/sleep-t20.S index e718d3d59646..b129158afeaf 100644 --- a/arch/arm/mach-tegra/sleep-t20.S +++ b/arch/arm/mach-tegra/sleep-t20.S @@ -60,6 +60,8 @@ #define CLK_RESET_RST_CPU_CMPLX_SET 0x340 +#define TEGRA_PL310_VIRT (TEGRA_ARM_PL310_BASE - IO_PPSB_PHYS + IO_PPSB_VIRT) + #if defined(CONFIG_HOTPLUG_CPU) || defined(CONFIG_PM_SLEEP) /* * tegra20_hotplug_shutdown(void) @@ -247,6 +249,15 @@ ENTRY(tegra2_sleep_wfi) #endif #endif +#ifdef CONFIG_CACHE_L2X0 + /* Issue a PL310 cache sync operation */ + dsb + mov32 r2, TEGRA_PL310_VIRT + 0x730 @ cache sync + add r2, r2, r1 + mov r1, #0 + str r1, [r2] +#endif + pop_ctx_regs r0, r1 @ restore context registers mov pc, lr ENDPROC(tegra2_sleep_wfi) |