diff --git a/arch/arm/mach-davinci/include/mach/psc.h b/arch/arm/mach-davinci/include/mach/psc.h
index 983da6e4554cd01cddd2150f5042bfb4caf66049..62b0858f68cacbf8560f090cc02c6e0eb5f1a491 100644
--- a/arch/arm/mach-davinci/include/mach/psc.h
+++ b/arch/arm/mach-davinci/include/mach/psc.h
@@ -172,6 +172,7 @@
 #define DA8XX_LPSC1_UART2		13
 #define DA8XX_LPSC1_LCDC		16
 #define DA8XX_LPSC1_PWM			17
+#define DA850_LPSC1_MMC_SD1		18
 #define DA8XX_LPSC1_ECAP		20
 #define DA830_LPSC1_EQEP		21
 #define DA850_LPSC1_TPTC2		21