diff --git a/arch/arm/mach-imx/mx6/soc.c b/arch/arm/mach-imx/mx6/soc.c
index ffc2951..31c9a6e 100644
--- a/arch/arm/mach-imx/mx6/soc.c
+++ b/arch/arm/mach-imx/mx6/soc.c
@@ -651,6 +651,11 @@
 }
 #endif
 
+
+/*
+ * gpr_init() function is common for boards using MX6S, MX6DL, MX6D,
+ * MX6Q and MX6QP processors
+ */
 void gpr_init(void)
 {
 	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;