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Diffstat (limited to 'nuttx/arch/arm/src/sama5/sam_adc.c')
-rw-r--r--nuttx/arch/arm/src/sama5/sam_adc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/sama5/sam_adc.c b/nuttx/arch/arm/src/sama5/sam_adc.c
index 9af6cdc2c..eb8f8c2ac 100644
--- a/nuttx/arch/arm/src/sama5/sam_adc.c
+++ b/nuttx/arch/arm/src/sama5/sam_adc.c
@@ -138,6 +138,8 @@
DMACH_FLAG_MEMCHUNKSIZE_1)
#endif
+#define ADC_CLOCK_MAX 20000000 /* Max ADC Clock Frequency (Hz) */
+
/****************************************************************************
* Private Types
****************************************************************************/