[PATCH u-boot v2019.04-aspeed-openbmc] ARM: dts: aspeed: add Ampere's Mt. Mitchell BMC

[Quan Nguyen]

Add initial device tree for Aspeed AST2600-based Mt. Mitchell
BMC found on AmpereOne's reference platform.

Signed-off-by: Quan Nguyen <quan at os.amperecomputing.com>
---
 arch/arm/dts/Makefile               |   1 +
 arch/arm/dts/ast2600-mtmitchell.dts | 114 ++++++++++++++++++++++++++++
 2 files changed, 115 insertions(+)
 create mode 100644 arch/arm/dts/ast2600-mtmitchell.dts

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 6c34b83336..b6f9df21fc 100755
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -687,6 +687,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
 	ast2600-dcscm.dtb \
 	ast2600-fpga.dtb \
 	ast2600-intel.dtb \
+	ast2600-mtmitchell.dtb \
 	ast2600-ncsi.dtb \
 	ast2600-p10bmc.dtb \
 	ast2600-pfr.dtb \
diff --git a/arch/arm/dts/ast2600-mtmitchell.dts b/arch/arm/dts/ast2600-mtmitchell.dts
new file mode 100644
index 0000000000..69ed0c5fbc
--- /dev/null
+++ b/arch/arm/dts/ast2600-mtmitchell.dts
@@ -0,0 +1,114 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (c) 2022, Ampere Computing LLC
+
+/dts-v1/;
+
+#include "ast2600-u-boot.dtsi"
+
+/ {
+	model = "Ampere Mt.Mitchell BMC";
+	compatible = "ampere,mtmitchell-bmc", "aspeed,ast2600";
+
+	memory {
+		device_type = "memory";
+		reg = <0x80000000 0x40000000>;
+	};
+
+	chosen {
+		stdout-path = &uart5;
+	};
+
+	aliases {
+		spi0 = &fmc;
+		ethernet0 = &mac0;
+	};
+
+	cpus {
+		cpu at 0 {
+			clock-frequency = <800000000>;
+		};
+		cpu at 1 {
+			clock-frequency = <800000000>;
+		};
+	};
+};
+
+&uart5 {
+	u-boot,dm-pre-reloc;
+	status = "okay";
+};
+
+&sdrammc {
+	clock-frequency = <400000000>;
+};
+
+&wdt1 {
+	status = "okay";
+};
+
+&wdt2 {
+	status = "okay";
+};
+
+&wdt3 {
+	status = "okay";
+};
+
+&mdio {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <	&pinctrl_mdio1_default &pinctrl_mdio2_default
+			&pinctrl_mdio3_default &pinctrl_mdio4_default>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	ethphy0: ethernet-phy at 0 {
+		reg = <0>;
+	};
+};
+
+&mac0 {
+	status = "okay";
+	phy-mode = "rgmii-rxid";
+	phy-handle = <&ethphy0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_rgmii1_default>;
+};
+
+&fmc {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_fmcquad_default>;
+
+	flash at 0 {
+		compatible = "spi-flash", "sst,w25q256";
+		status = "okay";
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+	};
+
+	flash at 1 {
+		compatible = "spi-flash", "sst,w25q256";
+		status = "okay";
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+	};
+};
+
+&scu {
+	mac0-clk-delay = <0x10 0x0a
+			  0x10 0x10
+			  0x10 0x10>;
+};
+
+&hace {
+	u-boot,dm-pre-reloc;
+	status = "okay";
+};
+
+&acry {
+	u-boot,dm-pre-reloc;
+	status = "okay";
+};
-- 
2.35.1