arm: dts: owl-s500: Set CMU clocks for UARTs

Set Clock Management Unit clocks for the UART nodes of Actions Semi
S500 SoCs and remove the dummy "uart2_clk" and "uart3_clk" fixed clocks.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

arch/arm/boot/dts/owl-s500-cubieboard6.dts

@@ -25,12 +25,6 @@
 		device_type = "memory";
 		reg = <0x0 0x80000000>;
 	};
-
-	uart3_clk: uart3-clk {
-		compatible = "fixed-clock";
-		clock-frequency = <921600>;
-		#clock-cells = <0>;
-	};
 };
 
 &timer {
@@ -39,5 +33,4 @@
 
 &uart3 {
 	status = "okay";
-	clocks = <&uart3_clk>;
 };

arch/arm/boot/dts/owl-s500-guitar-bb-rev-b.dts

@@ -18,15 +18,8 @@
 	chosen {
 		stdout-path = "serial3:115200n8";
 	};
-
-	uart3_clk: uart3-clk {
-		compatible = "fixed-clock";
-		clock-frequency = <921600>;
-		#clock-cells = <0>;
-	};
 };
 
 &uart3 {
 	status = "okay";
-	clocks = <&uart3_clk>;
 };

arch/arm/boot/dts/owl-s500-labrador-base-m.dts

@@ -21,15 +21,8 @@
 	chosen {
 		stdout-path = "serial3:115200n8";
 	};
-
-	uart3_clk: uart3-clk {
-		compatible = "fixed-clock";
-		clock-frequency = <921600>;
-		#clock-cells = <0>;
-	};
 };
 
 &uart3 {
 	status = "okay";
-	clocks = <&uart3_clk>;
 };

arch/arm/boot/dts/owl-s500-roseapplepi.dts

@@ -25,12 +25,6 @@
 		device_type = "memory";
 		reg = <0x0 0x80000000>; /* 2GB */
 	};
-
-	uart2_clk: uart2-clk {
-		compatible = "fixed-clock";
-		clock-frequency = <921600>;
-		#clock-cells = <0>;
-	};
 };
 
 &twd_timer {
@@ -43,5 +37,4 @@
 
 &uart2 {
 	status = "okay";
-	clocks = <&uart2_clk>;
 };

arch/arm/boot/dts/owl-s500-sparky.dts

@@ -25,12 +25,6 @@
 		device_type = "memory";
 		reg = <0x0 0x40000000>; /* 1 or 2 GiB */
 	};
-
-	uart3_clk: uart3-clk {
-		compatible = "fixed-clock";
-		clock-frequency = <921600>;
-		#clock-cells = <0>;
-	};
 };
 
 &timer {
@@ -39,5 +33,4 @@
 
 &uart3 {
 	status = "okay";
-	clocks = <&uart3_clk>;
 };

arch/arm/boot/dts/owl-s500.dtsi

@@ -131,6 +131,7 @@
 			compatible = "actions,s500-uart", "actions,owl-uart";
 			reg = <0xb0120000 0x2000>;
 			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cmu CLK_UART0>;
 			status = "disabled";
 		};
 
@@ -138,6 +139,7 @@
 			compatible = "actions,s500-uart", "actions,owl-uart";
 			reg = <0xb0122000 0x2000>;
 			interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cmu CLK_UART1>;
 			status = "disabled";
 		};
 
@@ -145,6 +147,7 @@
 			compatible = "actions,s500-uart", "actions,owl-uart";
 			reg = <0xb0124000 0x2000>;
 			interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cmu CLK_UART2>;
 			status = "disabled";
 		};
 
@@ -152,6 +155,7 @@
 			compatible = "actions,s500-uart", "actions,owl-uart";
 			reg = <0xb0126000 0x2000>;
 			interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cmu CLK_UART3>;
 			status = "disabled";
 		};
 
@@ -159,6 +163,7 @@
 			compatible = "actions,s500-uart", "actions,owl-uart";
 			reg = <0xb0128000 0x2000>;
 			interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cmu CLK_UART4>;
 			status = "disabled";
 		};
 
@@ -166,6 +171,7 @@
 			compatible = "actions,s500-uart", "actions,owl-uart";
 			reg = <0xb012a000 0x2000>;
 			interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cmu CLK_UART5>;
 			status = "disabled";
 		};
 
@@ -173,6 +179,7 @@
 			compatible = "actions,s500-uart", "actions,owl-uart";
 			reg = <0xb012c000 0x2000>;
 			interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cmu CLK_UART6>;
 			status = "disabled";
 		};