Changeset 3896974 in mainline

Timestamp:

2012-09-19T21:23:30Z (12 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

5711f6e

Parents:

8316547f

Message:

arm32: Add power saving sleep for gta02

File:

• kernel/arch/arm32/include/asm.h (modified) (2 diffs)

kernel/arch/arm32/include/asm.h

@@ -46 +46 @@
  *
  * ARMv7 introduced wait for event and wait for interrupt (wfe/wfi).
+ * ARM920T has custom coprocessor action to do the same. See ARM920T Technical
+ * Reference Manual ch 4.9 p. 4-23 (103 in the PDF)
  */
 NO_TRACE static inline void cpu_sleep(void)
@@ -51 +53 @@
 #ifdef PROCESSOR_armv7_a
         asm volatile ( "wfe" :: );
+#elif defined(MACHINE_gta02)
+        asm volatile ( "mcr p15,0,R0,c7,c0,4" :: );
 #endif
 }