[PATCH 5/6] riscv: dts: add initial board data for the SiFive HiFive Unleashed

[Paul Walmsley]

Add initial board data for the SiFive HiFive Unleashed A00.

Currently the data populated in this DT file describes the board
DRAM configuration and the external clock sources that supply the
PRCI.

This second version adds onboard SPI device data, fixes the board's
memory size, and adds changes based on comments from Rob Herring
<robh+dt@xxxxxxxxxx>.

Signed-off-by: Paul Walmsley <paul.walmsley@xxxxxxxxxx>
Signed-off-by: Paul Walmsley <paul@xxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxx>
Cc: Albert Ou <aou@xxxxxxxxxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-riscv@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 arch/riscv/boot/dts/sifive/Makefile           |  2 +
 .../dts/sifive/hifive-unleashed-a00-fu540.dts | 69 +++++++++++++++++++
 2 files changed, 71 insertions(+)
 create mode 100644 arch/riscv/boot/dts/sifive/Makefile
 create mode 100644 arch/riscv/boot/dts/sifive/hifive-unleashed-a00-fu540.dts

diff --git a/arch/riscv/boot/dts/sifive/Makefile b/arch/riscv/boot/dts/sifive/Makefile
new file mode 100644
index 000000000000..fb825db888df
--- /dev/null
+++ b/arch/riscv/boot/dts/sifive/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_SIFIVE) += hifive-unleashed-a00-fu540.dtb
diff --git a/arch/riscv/boot/dts/sifive/hifive-unleashed-a00-fu540.dts b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00-fu540.dts
new file mode 100644
index 000000000000..9d35e811a3aa
--- /dev/null
+++ b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00-fu540.dts
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: (Apache-2.0 OR GPL-2.0+)
+/* Copyright (c) 2018-2019 SiFive, Inc */
+
+/dts-v1/;
+
+#include "fu540-c000.dtsi"
+
+/* Clock frequency (in Hz) of the PCB crystal for rtcclk */
+#define RTCCLK_FREQ		1000000
+
+/ {
+	#address-cells = <2>;
+	#size-cells = <2>;
+	model = "SiFive HiFive Unleashed A00 (FU540-C000)";
+	compatible = "sifive,hifive-unleashed-a00-fu540",
+		"sifive,hifive-unleashed-fu540",
+		"sifive,fu540-c000", "sifive-fu540";
+
+	chosen {
+	};
+
+	cpus {
+		timebase-frequency = <RTCCLK_FREQ>;
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x0 0x80000000 0x2 0x00000000>;
+	};
+
+	soc {
+	};
+
+	hfclk: hfclk {
+		#clock-cells = <0>;
+		compatible = "fixed-clock";
+		clock-frequency = <33333333>;
+		clock-output-names = "hfclk";
+	};
+
+	rtcclk: rtcclk {
+		#clock-cells = <0>;
+		compatible = "fixed-clock";
+		clock-frequency = <RTCCLK_FREQ>;
+		clock-output-names = "rtcclk";
+	};
+};
+
+&qspi0 {
+	flash@0 {
+		compatible = "issi,is25wp256d", "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		m25p,fast-read;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+	};
+};
+
+&qspi2 {
+	status = "okay";
+	mmc@0 {
+		compatible = "mmc-spi-slot";
+		reg = <0>;
+		spi-max-frequency = <20000000>;
+		voltage-ranges = <3300 3300>;
+		disable-wp;
+	};
+};
-- 
2.20.1