diff --git a/arch/arm/mach-k3/am642_init.c b/arch/arm/mach-k3/am642_init.c
index 533905d..958fa05 100644
--- a/arch/arm/mach-k3/am642_init.c
+++ b/arch/arm/mach-k3/am642_init.c
@@ -37,6 +37,9 @@
 	mmr_unlock(CTRL_MMR0_BASE, 3);
 	mmr_unlock(CTRL_MMR0_BASE, 5);
 	mmr_unlock(CTRL_MMR0_BASE, 6);
+
+	/* Unlock all MCU_PADCFG_MMR1 module registers */
+	mmr_unlock(MCU_PADCFG_MMR1_BASE, 1);
 }
 
 /*