diff --git a/arch/arm/mach-davinci/psc.c b/arch/arm/mach-davinci/psc.c
index d7cb438..1b15dbd 100644
--- a/arch/arm/mach-davinci/psc.c
+++ b/arch/arm/mach-davinci/psc.c
@@ -38,8 +38,9 @@
 		return 0;
 	}
 
-	psc_base = soc_info->psc_bases[ctlr];
+	psc_base = ioremap(soc_info->psc_bases[ctlr], SZ_4K);
 	mdstat = __raw_readl(psc_base + MDSTAT + 4 * id);
+	iounmap(psc_base);
 
 	/* if clocked, state can be "Enable" or "SyncReset" */
 	return mdstat & BIT(12);
@@ -59,7 +60,7 @@
 		return;
 	}
 
-	psc_base = soc_info->psc_bases[ctlr];
+	psc_base = ioremap(soc_info->psc_bases[ctlr], SZ_4K);
 
 	mdctl = __raw_readl(psc_base + MDCTL + 4 * id);
 	mdctl &= ~MDSTAT_STATE_MASK;
@@ -99,4 +100,6 @@
 	do {
 		mdstat = __raw_readl(psc_base + MDSTAT + 4 * id);
 	} while (!((mdstat & MDSTAT_STATE_MASK) == next_state));
+
+	iounmap(psc_base);
 }