[PATCH 1/3] at91sam9: add detection of low power sdram

[Jean-Christophe PLAGNIOL-VILLARD]

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
---
 arch/arm/mach-at91/include/mach/at91sam9_sdramc.h |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/mach-at91/include/mach/at91sam9_sdramc.h b/arch/arm/mach-at91/include/mach/at91sam9_sdramc.h
index 1ab61e9..971a772 100644
--- a/arch/arm/mach-at91/include/mach/at91sam9_sdramc.h
+++ b/arch/arm/mach-at91/include/mach/at91sam9_sdramc.h
@@ -110,6 +110,11 @@ static inline u32 at91_get_sdram_size(void)
 
 	return size;
 }
+
+static inline bool at91_is_low_power_sdram(void)
+{
+	return at91_sys_read(AT91_SDRAMC_MDR) & AT91_SDRAMC_MD_LOW_POWER_SDRAM;
+}
 #endif
 
 #endif
-- 
1.7.10.4