diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts
index 0ad71b8..cc6e28f 100644
--- a/arch/arm/boot/dts/r8a7791-koelsch.dts
+++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
@@ -661,6 +661,7 @@
 };
 
 &pcie_bus_clk {
+	clock-frequency = <100000000>;
 	status = "okay";
 };
 
diff --git a/arch/arm/boot/dts/r8a7791-porter.dts b/arch/arm/boot/dts/r8a7791-porter.dts
index 6c08314..a9285d9 100644
--- a/arch/arm/boot/dts/r8a7791-porter.dts
+++ b/arch/arm/boot/dts/r8a7791-porter.dts
@@ -143,19 +143,11 @@
 };
 
 &pfc {
-	pinctrl-0 = <&scif_clk_pins>;
-	pinctrl-names = "default";
-
 	scif0_pins: serial0 {
 		renesas,groups = "scif0_data_d";
 		renesas,function = "scif0";
 	};
 
-	scif_clk_pins: scif_clk {
-		renesas,groups = "scif_clk";
-		renesas,function = "scif_clk";
-	};
-
 	ether_pins: ether {
 		renesas,groups = "eth_link", "eth_mdio", "eth_rmii";
 		renesas,function = "eth";
@@ -229,11 +221,6 @@
 	status = "okay";
 };
 
-&scif_clk {
-	clock-frequency = <14745600>;
-	status = "okay";
-};
-
 &ether {
 	pinctrl-0 = <&ether_pins &phy1_pins>;
 	pinctrl-names = "default";
@@ -414,6 +401,7 @@
 };
 
 &pcie_bus_clk {
+	clock-frequency = <100000000>;
 	status = "okay";
 };
 
diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi
index 6439f05..1cd1b6a 100644
--- a/arch/arm/boot/dts/r8a7791.dtsi
+++ b/arch/arm/boot/dts/r8a7791.dtsi
@@ -1083,9 +1083,8 @@
 		pcie_bus_clk: pcie_bus_clk {
 			compatible = "fixed-clock";
 			#clock-cells = <0>;
-			clock-frequency = <100000000>;
+			clock-frequency = <0>;
 			clock-output-names = "pcie_bus";
-			status = "disabled";
 		};
 
 		/* External SCIF clock */
@@ -1094,7 +1093,6 @@
 			#clock-cells = <0>;
 			/* This value must be overridden by the board. */
 			clock-frequency = <0>;
-			status = "disabled";
 		};
 
 		/* External USB clock - can be overridden by the board */
@@ -1112,7 +1110,6 @@
 			/* This value must be overridden by the board. */
 			clock-frequency = <0>;
 			clock-output-names = "can_clk";
-			status = "disabled";
 		};
 
 		/* Special CPG clocks */
diff --git a/arch/arm/mach-shmobile/timer.c b/arch/arm/mach-shmobile/timer.c
index ad008e4..67d79f9 100644
--- a/arch/arm/mach-shmobile/timer.c
+++ b/arch/arm/mach-shmobile/timer.c
@@ -40,8 +40,7 @@
 void __init shmobile_init_delay(void)
 {
 	struct device_node *np, *cpus;
-	bool is_a7_a8_a9 = false;
-	bool is_a15 = false;
+	unsigned int div = 0;
 	bool has_arch_timer = false;
 	u32 max_freq = 0;
 
@@ -55,27 +54,22 @@
 		if (!of_property_read_u32(np, "clock-frequency", &freq))
 			max_freq = max(max_freq, freq);
 
-		if (of_device_is_compatible(np, "arm,cortex-a8") ||
-		    of_device_is_compatible(np, "arm,cortex-a9")) {
-			is_a7_a8_a9 = true;
-		} else if (of_device_is_compatible(np, "arm,cortex-a7")) {
-			is_a7_a8_a9 = true;
-			has_arch_timer = true;
-		} else if (of_device_is_compatible(np, "arm,cortex-a15")) {
-			is_a15 = true;
+		if (of_device_is_compatible(np, "arm,cortex-a8")) {
+			div = 2;
+		} else if (of_device_is_compatible(np, "arm,cortex-a9")) {
+			div = 1;
+		} else if (of_device_is_compatible(np, "arm,cortex-a7") ||
+			 of_device_is_compatible(np, "arm,cortex-a15")) {
+			div = 1;
 			has_arch_timer = true;
 		}
 	}
 
 	of_node_put(cpus);
 
-	if (!max_freq)
+	if (!max_freq || !div)
 		return;
 
-	if (!has_arch_timer || !IS_ENABLED(CONFIG_ARM_ARCH_TIMER)) {
-		if (is_a7_a8_a9)
-			shmobile_setup_delay_hz(max_freq, 1, 3);
-		else if (is_a15)
-			shmobile_setup_delay_hz(max_freq, 2, 4);
-	}
+	if (!has_arch_timer || !IS_ENABLED(CONFIG_ARM_ARCH_TIMER))
+		shmobile_setup_delay_hz(max_freq, 1, div);
 }