[PATCH u-boot v2019.04-aspeed-openbmc] ARM: dts: aspeed: Add a Romulus board (AST2500)

[Joel Stanley]

Romulus was the OpenPOWER reference platform for the IBM Power9,
containing an ASPEED AST2500.

It was designed by IBM and built by SuperMicro. This reference platform
was sold as the Raptor Computing Systems Tallos II.

The machine used one 32MB SPI NOR for the BMC, a second SPI NOR flash
for the host firmware, and the Broadcom BCM5719 attached via NC-SI.

Signed-off-by: Joel Stanley <joel at jms.id.au>
---
 arch/arm/dts/Makefile            |  1 +
 arch/arm/dts/ast2500-romulus.dts | 76 ++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+)
 create mode 100644 arch/arm/dts/ast2500-romulus.dts

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index c1f24a14a615..6c34b8333634 100755
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -679,6 +679,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
 	ast2400-ahe-50dc.dtb \
 	ast2400-palmetto.dtb \
 	ast2500-evb.dtb \
+	ast2500-romulus.dtb \
 	ast2600a0-evb.dtb \
 	ast2600a1-evb.dtb \
 	ast2600-bletchley.dtb \
diff --git a/arch/arm/dts/ast2500-romulus.dts b/arch/arm/dts/ast2500-romulus.dts
new file mode 100644
index 000000000000..726d3f54ff24
--- /dev/null
+++ b/arch/arm/dts/ast2500-romulus.dts
@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright 2022 IBM Corp.
+/dts-v1/;
+
+#include "ast2500-u-boot.dtsi"
+
+/ {
+	model = "Romulus BMC";
+	compatible = "ibm,romulus-bmc", "aspeed,ast2500";
+
+	memory {
+		device_type = "memory";
+		reg = <0x80000000 0x20000000>;
+	};
+
+	chosen {
+		stdout-path = &uart5;
+	};
+
+	aliases {
+		spi0 = &fmc;
+		spi1 = &spi1;
+		ethernet0 = &mac0;
+		ethernet1 = &mac1;
+	};
+};
+
+&uart5 {
+	u-boot,dm-pre-reloc;
+	status = "okay";
+};
+
+&sdrammc {
+	clock-frequency = <400000000>;
+};
+
+&wdt1 {
+	u-boot,dm-pre-reloc;
+	status = "okay";
+};
+
+&wdt2 {
+	u-boot,dm-pre-reloc;
+	status = "okay";
+};
+
+&mac0 {
+	status = "okay";
+
+	phy-mode = "NC-SI";
+	use-ncsi;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_rmii1_default>;
+};
+
+&fmc {
+	status = "okay";
+	flash at 0 {
+		status = "okay";
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <2>;
+		spi-rx-bus-width = <2>;
+	};
+};
+
+&spi1 {
+	status = "okay";
+	flash at 0 {
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_spi1_default>;
+		status = "okay";
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <2>;
+		spi-rx-bus-width = <2>;
+	};
+};
-- 
2.35.1