From 12de4b5e7cbcd193d5abb753ca511fe8f2236846 Mon Sep 17 00:00:00 2001
From: Pawel Dembicki <paweldembicki@gmail.com>
Date: Fri, 13 Nov 2020 07:30:03 +0100
Subject: [PATCH 2/2] arm64: dts: fsl-ls1012a-frdm: add spi-uart device

This patch adds spi-uart controller  to LS1012A-FRDM board dts.
Device is equipped in SC16IS740 from NXP.

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
---
 .../boot/dts/freescale/fsl-ls1012a-frdm.dts   | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

--- a/arch/arm64/boot/dts/freescale/fsl-ls1012a-frdm.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1012a-frdm.dts
@@ -7,6 +7,7 @@
  */
 /dts-v1/;
 
+#include <dt-bindings/interrupt-controller/irq.h>
 #include "fsl-ls1012a.dtsi"
 
 / {
@@ -16,6 +17,7 @@
 	aliases {
 		ethernet0 = &pfe_mac0;
 		ethernet1 = &pfe_mac1;
+		serial0 = &duart0;
 	};
 
 	sys_mclk: clock-mclk {
@@ -61,6 +63,26 @@
 		};
 	};
 };
+
+&dspi {
+	status = "okay";
+	bus-num = <0>;
+
+	serial@0 {
+		reg = <0>;
+		compatible = "nxp,sc16is740";
+		spi-max-frequency = <4000000>;
+		clocks = <&sc16is7xx_clk>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+
+		sc16is7xx_clk: sc16is7xx_clk {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <24000000>;
+		};
+	};
+};
 
 &duart0 {
 	status = "okay";