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authorIngo Molnar <mingo@elte.hu>2011-06-04 12:13:06 +0200
committerIngo Molnar <mingo@elte.hu>2011-06-04 12:13:06 +0200
commit710054ba25c0d1f8f41c22ce13ba336503fb5318 (patch)
treef9b09b722bf511841539173d946f90a20fc2e59a /arch/arm/mach-at91/include/mach/system_rev.h
parent74c355fbdfedd3820046dba4f537876cea54c207 (diff)
parentb273fa9716aa1564bee88ceee62f9042981cdc81 (diff)
Merge branch 'perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Diffstat (limited to 'arch/arm/mach-at91/include/mach/system_rev.h')
-rw-r--r--arch/arm/mach-at91/include/mach/system_rev.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/include/mach/system_rev.h b/arch/arm/mach-at91/include/mach/system_rev.h
new file mode 100644
index 00000000000..b855ee75f72
--- /dev/null
+++ b/arch/arm/mach-at91/include/mach/system_rev.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Under GPLv2 only
+ */
+
+#ifndef __ARCH_SYSTEM_REV_H__
+#define __ARCH_SYSTEM_REV_H__
+
+/*
+ * board revision encoding
+ * mach specific
+ * the 16-31 bit are reserved for at91 generic information
+ *
+ * bit 31:
+ * 0 => nand 16 bit
+ * 1 => nand 8 bit
+ */
+#define BOARD_HAVE_NAND_8BIT (1 << 31)
+static int inline board_have_nand_8bit(void)
+{
+ return system_rev & BOARD_HAVE_NAND_8BIT;
+}
+
+#endif /* __ARCH_SYSTEM_REV_H__ */