diff --git a/arch/arm/mach-uniphier/sbc/sbc-pxs2.c b/arch/arm/mach-uniphier/sbc/sbc-pxs2.c
index 342a086..0e0ba27 100644
--- a/arch/arm/mach-uniphier/sbc/sbc-pxs2.c
+++ b/arch/arm/mach-uniphier/sbc/sbc-pxs2.c
@@ -16,4 +16,6 @@
 	/* necessary for ROM boot ?? */
 	/* system bus output enable */
 	writel(0x17, PC0CTRL);
+
+	uniphier_pin_init("system_bus_grp");	/* PXs3 */
 }