[RFC PATCH v2 7/7] ARM: dts: Declare UART1 on zx297520v3 boards.

["Stefan Dösinger" <stefandoesinger@gmail.com>]

This is the UART that sends Uboot messages and is accessible via pins on
the boards I have seen so far. UART0 and UART2 exist as well, but don't
have pins enabled by the bootloader. They will be added later.

Signed-off-by: Stefan Dösinger <stefandoesinger@gmail.com>
---
 arch/arm/boot/dts/zte/zx297520v3.dtsi | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm/boot/dts/zte/zx297520v3.dtsi b/arch/arm/boot/dts/zte/zx297520v3.dtsi
index ecd07f3fb8b3..09fbb1d052e3 100644
--- a/arch/arm/boot/dts/zte/zx297520v3.dtsi
+++ b/arch/arm/boot/dts/zte/zx297520v3.dtsi
@@ -6,6 +6,10 @@ / {
 	#address-cells = <1>;
 	#size-cells = <1>;
 
+	aliases {
+		serial1 = &uart1;
+	};
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
@@ -57,5 +61,23 @@ timer {
 			 */
 			arm,cpu-registers-not-fw-configured;
 		};
+
+		/* The UART clock defaults to 26 mhz. It will be replaced when the zx29 clock
+		 * framework is added.
+		 */
+		uartclk: uartclk: clock-26000000 {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <26000000>;
+		};
+
+		uart1: serial@1408000 {
+			compatible = "arm,pl011", "arm,primecell";
+			arm,primecell-periphid = <0x001feffe>;
+			reg = <0x01408000 0x1000>;
+			interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&uartclk>;
+			clock-names = "apb_pclk";
+		};
 	};
 };
-- 
2.52.0