diff options
| author | Dave Gerlach <d-gerlach@ti.com> | 2014-10-06 16:47:18 -0500 |
|---|---|---|
| committer | Tero Kristo <t-kristo@ti.com> | 2014-10-09 11:32:32 +0300 |
| commit | 47f9e608d62ccb228afb934e0d7ffe1fe996b1ca (patch) | |
| tree | 28ed13666f9fe045fcee06f12adb2ca01d6d6c33 /arch | |
| parent | 0aef69e6e5607c9334657a475e2f8032c1e1d8b2 (diff) | |
ARM: OMAP2: sleep43xx: Access registers to avoid TLB miss
Access the three registers that we need to access after EMIF is placed
in DDR to make sure they are present in TLB to avoid a miss and walk of
page table in DDR, which is not possible once DDR is shut off and will
lead to a hang in suspend path if attempted.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-omap2/sleep43xx.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/sleep43xx.S b/arch/arm/mach-omap2/sleep43xx.S index 9444fd4a5f1..d7fbbec741e 100644 --- a/arch/arm/mach-omap2/sleep43xx.S +++ b/arch/arm/mach-omap2/sleep43xx.S @@ -218,6 +218,15 @@ sync: bne sync #endif + ldr r1, am43xx_virt_mpu_clkctrl + ldr r2, [r1] + + ldr r1, am43xx_virt_mpu_clkstctrl + ldr r2, [r1] + + ldr r1, am43xx_virt_emif_clkctrl + ldr r2, [r1] + ldr r0, emif_addr_virt /* Put SDRAM in self-refresh */ ldr r1, [r0, #EMIF_POWER_MANAGEMENT_CONTROL] |