[U-Boot] [PATCH 04/10] ARM: DT: stm32f7: add usart1 & clock device tree nodes

[Vikas Manocha]

Also created alias for usart1 and specified oscillator clock for stm32f7
discovery board.

Signed-off-by: Vikas Manocha <vikas.manocha at st.com>
---
 arch/arm/dts/stm32f746-disco.dts |  5 +++++
 arch/arm/dts/stm32f746.dtsi      | 27 +++++++++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/arch/arm/dts/stm32f746-disco.dts b/arch/arm/dts/stm32f746-disco.dts
index bad0698..454b515 100644
--- a/arch/arm/dts/stm32f746-disco.dts
+++ b/arch/arm/dts/stm32f746-disco.dts
@@ -61,10 +61,15 @@
 	};
 
 	aliases {
+		serial0 = &usart1;
 		spi0 = &qspi;
 	};
 };
 
+&clk_hse {
+	clock-frequency = <25000000>;
+};
+
 &mac {
 	status = "okay";
 	phy-mode = "rmii";
diff --git a/arch/arm/dts/stm32f746.dtsi b/arch/arm/dts/stm32f746.dtsi
index 3902e76..afcd327 100644
--- a/arch/arm/dts/stm32f746.dtsi
+++ b/arch/arm/dts/stm32f746.dtsi
@@ -48,7 +48,16 @@
 #include <dt-bindings/pinctrl/stm32f746-pinfunc.h>
 
 / {
+	clocks {
+		clk_hse: clk-hse {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <0>;
+		};
+};
+
 	soc {
+		u-boot,dm-pre-reloc;
 		mac: ethernet at 40028000 {
 			compatible = "st,stm32-dwmac";
 			reg = <0x40028000 0x8000>;
@@ -71,6 +80,24 @@
 			spi-max-frequency = <108000000>;
 			status = "disabled";
 		};
+		usart1: serial at 40011000 {
+			compatible = "st,stm32-usart", "st,stm32-uart";
+			reg = <0x40011000 0x400>;
+			interrupts = <37>;
+			clocks = <&rcc 0 164>;
+			status = "disabled";
+			u-boot,dm-pre-reloc;
+		};
+		rcc: rcc at 40023810 {
+			#reset-cells = <1>;
+			#clock-cells = <2>;
+			compatible = "st,stm32f42xx-rcc", "st,stm32-rcc";
+			reg = <0x40023800 0x400>;
+			clocks = <&clk_hse>;
+			u-boot,dm-pre-reloc;
+		};
+
+
 	};
 };
 
-- 
1.9.1