diff --git a/arch/arm/mach-keystone/clock.c b/arch/arm/mach-keystone/clock.c
index 68f8980..645bd96 100644
--- a/arch/arm/mach-keystone/clock.c
+++ b/arch/arm/mach-keystone/clock.c
@@ -284,7 +284,7 @@
 	u32 tmp, reg;
 
 	if (pll == MAIN_PLL) {
-		ret = external_clk[sys_clk];
+		ret = get_external_clk(sys_clk);
 		if (pllctl_reg_read(pll, ctl) & PLLCTL_PLLEN_MASK) {
 			/* PLL mode */
 			tmp = __raw_readl(KS2_MAINPLLCTL0);
@@ -302,23 +302,23 @@
 	} else {
 		switch (pll) {
 		case PASS_PLL:
-			ret = external_clk[pa_clk];
+			ret = get_external_clk(pa_clk);
 			reg = KS2_PASSPLLCTL0;
 			break;
 		case TETRIS_PLL:
-			ret = external_clk[tetris_clk];
+			ret = get_external_clk(tetris_clk);
 			reg = KS2_ARMPLLCTL0;
 			break;
 		case DDR3A_PLL:
-			ret = external_clk[ddr3a_clk];
+			ret = get_external_clk(ddr3a_clk);
 			reg = KS2_DDR3APLLCTL0;
 			break;
 		case DDR3B_PLL:
-			ret = external_clk[ddr3b_clk];
+			ret = get_external_clk(ddr3b_clk);
 			reg = KS2_DDR3BPLLCTL0;
 			break;
 		case UART_PLL:
-			ret = external_clk[uart_clk];
+			ret = get_external_clk(uart_clk);
 			reg = KS2_UARTPLLCTL0;
 			break;
 		default: