diff --git a/[refs] b/[refs]
index f399ed5ef69d..4c7a19172cb3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 73e31235ca7874701718b562ac19161516e46c13
+refs/heads/master: fa6d459d64a60db41c476c16063670ca4297e1d1
diff --git a/trunk/arch/powerpc/platforms/512x/clock.c b/trunk/arch/powerpc/platforms/512x/clock.c
index 9f771e05457c..d0095c8ee579 100644
--- a/trunk/arch/powerpc/platforms/512x/clock.c
+++ b/trunk/arch/powerpc/platforms/512x/clock.c
@@ -680,13 +680,12 @@ static void psc_calc_rate(struct clk *clk, int pscnum, struct device_node *np)
 static void psc_clks_init(void)
 {
 	struct device_node *np;
-	const u32 *cell_index;
 	struct platform_device *ofdev;
+	u32 reg;
 
 	for_each_compatible_node(np, NULL, "fsl,mpc5121-psc") {
-		cell_index = of_get_property(np, "cell-index", NULL);
-		if (cell_index) {
-			int pscnum = *cell_index;
+		if (!of_property_read_u32(np, "reg", &reg)) {
+			int pscnum = (reg & 0xf00) >> 8;
 			struct clk *clk = psc_dev_clk(pscnum);
 
 			clk->flags = CLK_HAS_RATE | CLK_HAS_CTRL;