Add CoreCourse socfpga Board - AC501

CoreCourse Altera GEN5 Cyclone V board
do support different size and formfactor.
Now introducing AC501 C5 to mainstream u-boot
This is a UBGA-484 based board with basic
feature. More info on [1]

[1] https://corecourse.cn/forum.php?mod=viewthread&tid=27704&highlight=AC501

Signed-off-by: Brian Sune <[email protected]>
Reviewed-by: Tien Fong Chee <[email protected]>

4 files changed, 124 insertions, 0 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 82ad3035308..1ade51e2dea 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -469,6 +469,7 @@ dtb-$(CONFIG_ARCH_SOCFPGA) +=				\
 	socfpga_cyclone5_socrates.dtb			\
 	socfpga_cyclone5_sr1500.dtb			\
 	socfpga_cyclone5_vining_fpga.dtb		\
+	socfpga_cyclone5_ac501soc.dtb			\
 	socfpga_n5x_socdk.dtb				\
 	socfpga_stratix10_socdk.dtb
 
diff --git a/arch/arm/dts/socfpga_cyclone5_ac501soc-u-boot.dtsi b/arch/arm/dts/socfpga_cyclone5_ac501soc-u-boot.dtsi
new file mode 100644
index 00000000000..8d2caf69dd1
--- /dev/null
+++ b/arch/arm/dts/socfpga_cyclone5_ac501soc-u-boot.dtsi
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * U-Boot additions
+ *
+ * Copyright Altera Corporation (C) 2015
+ * Copyright (c) 2018 Simon Goldschmidt
+ */
+
+#include "socfpga-common-u-boot.dtsi"
+
+/{
+	aliases {
+		udc0 = &usb1;
+	};
+};
+
+&watchdog0 {
+	status = "disabled";
+};
+
+&mmc {
+	bootph-all;
+};
+
+&uart0 {
+	clock-frequency = <100000000>;
+	bootph-all;
+};
+
+&uart1 {
+	clock-frequency = <100000000>;
+};
+
+&porta {
+	bank-name = "porta";
+};
+
+&portb {
+	bank-name = "portb";
+};
+
+&portc {
+	bank-name = "portc";
+};
diff --git a/arch/arm/dts/socfpga_cyclone5_ac501soc.dts b/arch/arm/dts/socfpga_cyclone5_ac501soc.dts
new file mode 100644
index 00000000000..6b02fa63c7c
--- /dev/null
+++ b/arch/arm/dts/socfpga_cyclone5_ac501soc.dts
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2025, Brian Sune
+ *
+ * based on socfpga_cyclone5_socdk.dts
+ */
+
+#include "socfpga_cyclone5.dtsi"
+
+/ {
+	model = "CoreCourse AC501SoC";
+	compatible = "altr,socfpga-cyclone5", "altr,socfpga";
+
+	chosen {
+		bootargs = "earlyprintk";
+		stdout-path = "serial0:115200n8";
+	};
+
+	aliases {
+		ethernet0 = &gmac1;
+		udc0 = &usb1;
+	};
+
+	memory@0 {
+		name = "memory";
+		device_type = "memory";
+		reg = <0x0 0x40000000>; /* 1GB */
+	};
+
+	regulator_3_3v: 3-3-v-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+};
+
+&gmac1 {
+	status = "okay";
+	phy-mode = "rgmii";
+
+	rxd0-skew-ps = <420>;
+	rxd1-skew-ps = <420>;
+	rxd2-skew-ps = <420>;
+	rxd3-skew-ps = <420>;
+	txen-skew-ps = <0>;
+	txc-skew-ps = <1860>;
+	rxdv-skew-ps = <420>;
+	rxc-skew-ps = <1680>;
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio2 {
+	status = "okay";
+};
+
+&mmc0 {
+	vmmc-supply = <&regulator_3_3v>;
+	vqmmc-supply = <&regulator_3_3v>;
+	status = "okay";
+};
+
+&usb1 {
+	status = "okay";
+};
diff --git a/arch/arm/mach-socfpga/Kconfig b/arch/arm/mach-socfpga/Kconfig
index f2e959b5662..1a0fcd64296 100644
--- a/arch/arm/mach-socfpga/Kconfig
+++ b/arch/arm/mach-socfpga/Kconfig
@@ -239,6 +239,10 @@ config TARGET_SOCFPGA_TERASIC_SOCKIT
 	bool "Terasic SoCkit (Cyclone V)"
 	select TARGET_SOCFPGA_CYCLONE5
 
+config TARGET_SOCFPGA_CORECOURSE_AC501SOC
+	bool "CoreCourse AC501SoC (Cyclone V)"
+	select TARGET_SOCFPGA_CYCLONE5
+
 endchoice
 
 config SYS_BOARD
@@ -263,6 +267,7 @@ config SYS_BOARD
 	default "sr1500" if TARGET_SOCFPGA_SR1500
 	default "stratix10-socdk" if TARGET_SOCFPGA_STRATIX10_SOCDK
 	default "vining_fpga" if TARGET_SOCFPGA_SOFTING_VINING_FPGA
+	default "ac501soc" if TARGET_SOCFPGA_CORECOURSE_AC501SOC
 
 config SYS_VENDOR
 	default "intel" if TARGET_SOCFPGA_AGILEX7M_SOCDK
@@ -284,6 +289,7 @@ config SYS_VENDOR
 	default "terasic" if TARGET_SOCFPGA_TERASIC_DE10_NANO
 	default "terasic" if TARGET_SOCFPGA_TERASIC_DE10_STANDARD
 	default "terasic" if TARGET_SOCFPGA_TERASIC_SOCKIT
+	default "corecourse" if TARGET_SOCFPGA_CORECOURSE_AC501SOC
 
 config SYS_SOC
 	default "socfpga"
@@ -310,5 +316,6 @@ config SYS_CONFIG_NAME
 	default "socfpga_sr1500" if TARGET_SOCFPGA_SR1500
 	default "socfpga_stratix10_socdk" if TARGET_SOCFPGA_STRATIX10_SOCDK
 	default "socfpga_vining_fpga" if TARGET_SOCFPGA_SOFTING_VINING_FPGA
+	default "socfpga_ac501soc" if TARGET_SOCFPGA_CORECOURSE_AC501SOC
 
 endif