SRAM is used for early stack, but kernel disables its clock on suspend.
Re-enable SRAM clock on startup, otherwise u-boot crashes on resume from 
suspend.

Signed-off-by: Vasily Khoruzhick <anars...@gmail.com>
---
 arch/arm/cpu/pxa/start.S | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/arm/cpu/pxa/start.S b/arch/arm/cpu/pxa/start.S
index 24b6ad1..ce1181a 100644
--- a/arch/arm/cpu/pxa/start.S
+++ b/arch/arm/cpu/pxa/start.S
@@ -53,7 +53,15 @@ reset:
 #ifdef CONFIG_CPU_PXA25X
        bl      lock_cache_for_stack
 #endif
-
+#ifdef CONFIG_CPU_PXA27X
+       /*
+        * enable clock for SRAM
+        */
+       ldr     r0,=CKEN
+       ldr     r1,[r0]
+       orr     r1,r1,#(1 << 20)
+       str     r1,[r0]
+#endif
        bl      _main
 
 
/*------------------------------------------------------------------------------*/
-- 
2.7.2

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