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authorroot <root@artemis.panaceas.org>2015-12-25 04:40:36 +0000
committerroot <root@artemis.panaceas.org>2015-12-25 04:40:36 +0000
commit849369d6c66d3054688672f97d31fceb8e8230fb (patch)
tree6135abc790ca67dedbe07c39806591e70eda81ce /arch/arm/mach-at91/include/mach/system_rev.h
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Diffstat (limited to 'arch/arm/mach-at91/include/mach/system_rev.h')
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diff --git a/arch/arm/mach-at91/include/mach/system_rev.h b/arch/arm/mach-at91/include/mach/system_rev.h
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+++ 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 8 bit
+ * 1 => nand 16 bit
+ */
+#define BOARD_HAVE_NAND_16BIT (1 << 31)
+static inline int board_have_nand_16bit(void)
+{
+ return system_rev & BOARD_HAVE_NAND_16BIT;
+}
+
+#endif /* __ARCH_SYSTEM_REV_H__ */