[PATCH v3 2/2] ARM:dts:aspeed: Initial device tree for AMD Onyx Platform

[Rajaganesh Rathinasabapathi]

Add initial device tree and makefile updates for
AMD Onyx platform.

AMD Onyx platform is an AMD customer reference board with an Aspeed
ast2600 BMC manufactured by AMD.
It describes I2C devices, UARTs, MAC, FMC, etc.
present on AMD Onyx platform.

Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh at amd.com>
Signed-off-by: Rajaganesh Rathinasabapathi <Rajaganesh.Rathinasabapathi at amd.com>
---
Changes since v1:
* Incorporate review comments
* Update commit message
* Remove vmalloc and earlyprintk

Changes since v2:
* Address review comments
* Fix checkpatch warnings
* Remove bootargs
---
 arch/arm/boot/dts/aspeed/Makefile             |   1 +
 .../boot/dts/aspeed/aspeed-bmc-amd-onyx.dts   | 102 ++++++++++++++++++
 2 files changed, 103 insertions(+)
 create mode 100644 arch/arm/boot/dts/aspeed/aspeed-bmc-amd-onyx.dts

diff --git a/arch/arm/boot/dts/aspeed/Makefile b/arch/arm/boot/dts/aspeed/Makefile
index 2e5f4833a073..1e6a130377b8 100644
--- a/arch/arm/boot/dts/aspeed/Makefile
+++ b/arch/arm/boot/dts/aspeed/Makefile
@@ -5,6 +5,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-ast2600-evb.dtb \
 	aspeed-bmc-amd-daytonax.dtb \
 	aspeed-bmc-amd-ethanolx.dtb \
+	aspeed-bmc-amd-onyx.dtb \
 	aspeed-bmc-ampere-mtjade.dtb \
 	aspeed-bmc-ampere-mtjefferson.dtb \
 	aspeed-bmc-ampere-mtmitchell.dtb \
diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-amd-onyx.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-amd-onyx.dts
new file mode 100644
index 000000000000..6f3334995398
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-amd-onyx.dts
@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright (c) 2021 - 2024 AMD Inc.
+// Author: Supreeth Venkatesh <supreeth.venkatesh at amd.com>
+
+/dts-v1/;
+
+#include "aspeed-g6.dtsi"
+#include <dt-bindings/gpio/aspeed-gpio.h>
+
+/ {
+	model = "AMD Onyx BMC";
+	compatible = "amd,onyx-bmc", "aspeed,ast2600";
+
+	aliases {
+		serial0 = &uart1;
+		serial4 = &uart5;
+	};
+
+	chosen {
+		stdout-path = serial4:115200n8;
+	};
+
+	memory at 80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x80000000>;
+	};
+
+};
+
+&mdio0 {
+	status = "okay";
+	ethphy0: ethernet-phy at 0 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <0>;
+	};
+};
+
+&mac3 {
+	status = "okay";
+	phy-mode = "rgmii";
+	phy-handle = <&ethphy0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_rgmii4_default>;
+};
+
+&fmc {
+	status = "okay";
+	flash at 0 {
+		compatible = "jedec,spi-nor";
+		status = "okay";
+		#include "openbmc-flash-layout-128.dtsi"
+	};
+};
+
+//Host Console
+&uart1 {
+	status = "okay";
+};
+
+//BMC Console
+&uart5 {
+	status = "okay";
+};
+
+&gpio0 {
+gpio-line-names =
+	/*A0-A7*/	"","","","","","","","",
+	/*B0-B7*/	"","","","","MON_POST_COMPLETE","P0_PRESENT_L","","",
+	/*C0-C7*/	"","","","","","","","",
+	/*D0-D7*/	"","","","","","","","",
+	/*E0-E7*/	"","","","","","","","",
+	/*F0-F7*/	"","","","","","","","",
+	/*G0-G7*/	"","","","","","","","",
+	/*H0-H7*/	"","ASSERT_WARM_RST_BTN_L","ASSERT_SOC_RST_BTN_L","","","","","",
+	/*I0-I7*/	"","","","","","","","P0_I3C_APML_ALERT_L",
+	/*J0-J7*/	"","","","","","","","",
+	/*K0-K7*/	"","","","","","","","",
+	/*L0-L7*/	"","","","","","","","",
+	/*M0-M7*/	"","","","","","","","",
+	/*N0-N7*/	"","","","","","","PSP_SOFT_FUSE_NOTIFY","ASSERT_BMC_READY",
+	/*O0-O7*/	"","","HDT_SEL","HDT_XTRIG5","HDT_XTRIG6","JTAG_TRST_N","","",
+	/*P0-P7*/	"MON_RST_BTN_L","ASSERT_RST_BTN_L","MON_PWR_BTN_L","ASSERT_PWR_BTN_L",
+					"HPM_FPGA_LOCKOUT","ASSERT_NMI_BTN_L","MON_PWR_GOOD","",
+	/*Q0-Q7*/	"","","HDT_DBREQ_L","","BIOS_SPD_MUX_CTRL_RELEASED_L","","","",
+	/*R0-R7*/	"","","","","","","","",
+	/*S0-S7*/	"","","","","","","P0_DIMM_AF_ERROR","P0_DIMM_GL_ERROR",
+	/*T0-T7*/	"","","","","","","","",
+	/*U0-U7*/	"","","","","","","","",
+	/*V0-V7*/	"","","","","","","","",
+	/*W0-W7*/	"","","","","","","","",
+	/*X0-X7*/	"","","","","","","","",
+	/*Y0-Y7*/	"","","","","","","","",
+	/*Z0-Z7*/	"","","","","","","","";
+};
+
+&i2c7 {
+	status = "okay";
+	mbeeprom at 50 {
+		compatible = "atmel,24c256";
+		reg = <0x50>;
+	};
+};
-- 
2.34.1