[PATCH 02/19] arm/airoha: add support for airoha en7523 SoC family
Mikhail Kshevetskiy
mikhail.kshevetskiy at iopsys.eu
Sat Nov 1 01:44:46 CET 2025
Basic support for en7523/en7529/en7562 SoCs. Within a patch
only serial console will be supported.
Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy at iopsys.eu>
---
arch/arm/dts/en7523-evb-u-boot.dtsi | 11 ++++++
arch/arm/dts/en7523-u-boot.dtsi | 26 +++++++++++++
arch/arm/mach-airoha/Kconfig | 14 +++++++
arch/arm/mach-airoha/Makefile | 1 +
arch/arm/mach-airoha/en7523/Makefile | 3 ++
arch/arm/mach-airoha/en7523/init.c | 33 ++++++++++++++++
board/airoha/en7523/Makefile | 3 ++
board/airoha/en7523/en7523_rfb.c | 16 ++++++++
configs/en7523_evb_defconfig | 57 ++++++++++++++++++++++++++++
include/configs/en7523.h | 21 ++++++++++
10 files changed, 185 insertions(+)
create mode 100644 arch/arm/dts/en7523-evb-u-boot.dtsi
create mode 100644 arch/arm/dts/en7523-u-boot.dtsi
create mode 100644 arch/arm/mach-airoha/en7523/Makefile
create mode 100644 arch/arm/mach-airoha/en7523/init.c
create mode 100644 board/airoha/en7523/Makefile
create mode 100644 board/airoha/en7523/en7523_rfb.c
create mode 100644 configs/en7523_evb_defconfig
create mode 100644 include/configs/en7523.h
diff --git a/arch/arm/dts/en7523-evb-u-boot.dtsi b/arch/arm/dts/en7523-evb-u-boot.dtsi
new file mode 100644
index 00000000000..c109d6794fb
--- /dev/null
+++ b/arch/arm/dts/en7523-evb-u-boot.dtsi
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/ {
+ /* When running as a first-stage bootloader this isn't filled in automatically */
+ memory at 80000000 {
+ device_type = "memory";
+ reg = <0x80000000 0x10000000>;
+ };
+};
+
+#include "en7523-u-boot.dtsi"
diff --git a/arch/arm/dts/en7523-u-boot.dtsi b/arch/arm/dts/en7523-u-boot.dtsi
new file mode 100644
index 00000000000..34fa8069f9e
--- /dev/null
+++ b/arch/arm/dts/en7523-u-boot.dtsi
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/ {
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ atf-reserved-memory at 80000000 {
+ no-map;
+ reg = <0x80000000 0x40000>;
+ };
+ };
+
+ scu: system-controller at 1fa20000 {
+ compatible = "airoha,en7523-scu";
+ reg = <0x1fa20000 0x400>,
+ <0x1fb00000 0x1000>;
+ #clock-cells = <1>;
+ };
+
+};
+
+&uart1 {
+ bootph-all;
+};
diff --git a/arch/arm/mach-airoha/Kconfig b/arch/arm/mach-airoha/Kconfig
index be3562ae3ff..b9cd0a413e1 100644
--- a/arch/arm/mach-airoha/Kconfig
+++ b/arch/arm/mach-airoha/Kconfig
@@ -6,6 +6,17 @@ config SYS_VENDOR
choice
prompt "Airoha board select"
+config TARGET_EN7523
+ bool "Airoha EN7523 SoC"
+ select CPU_V7A
+ select ARMV7_SET_CORTEX_SMPEN
+ help
+ The Airoha EN7523 family (en7523/en7529/en7562) is an ARM-based
+ SoCs with a dual-core CPU. It comes with Wi-Fi 5/6 support and
+ connectivity to Ethernet PHY, DDR, PCIe, USB, UART and VoIP.
+ With advanced hardware design, EN7523 provides high processing
+ performance and low power consumption.
+
config TARGET_AN7581
bool "Airoha AN7581 SoC"
select ARM64
@@ -20,12 +31,15 @@ config TARGET_AN7581
endchoice
config SYS_SOC
+ default "en7523" if TARGET_EN7523
default "an7581" if TARGET_AN7581
config SYS_BOARD
+ default "en7523" if TARGET_EN7523
default "an7581" if TARGET_AN7581
config SYS_CONFIG_NAME
+ default "en7523" if TARGET_EN7523
default "an7581" if TARGET_AN7581
endif
diff --git a/arch/arm/mach-airoha/Makefile b/arch/arm/mach-airoha/Makefile
index 215a300373b..91395b8a850 100644
--- a/arch/arm/mach-airoha/Makefile
+++ b/arch/arm/mach-airoha/Makefile
@@ -2,4 +2,5 @@
obj-y += cpu.o
+obj-$(CONFIG_TARGET_EN7523) += en7523/
obj-$(CONFIG_TARGET_AN7581) += an7581/
diff --git a/arch/arm/mach-airoha/en7523/Makefile b/arch/arm/mach-airoha/en7523/Makefile
new file mode 100644
index 00000000000..886ab7e4eb9
--- /dev/null
+++ b/arch/arm/mach-airoha/en7523/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-y += init.o
diff --git a/arch/arm/mach-airoha/en7523/init.c b/arch/arm/mach-airoha/en7523/init.c
new file mode 100644
index 00000000000..c1c1eeabdf5
--- /dev/null
+++ b/arch/arm/mach-airoha/en7523/init.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Author: Mikhail Kshevetskiy <mikhail.kshevetskiy at iopsys.eu>
+ */
+#include <fdtdec.h>
+#include <init.h>
+#include <sysreset.h>
+#include <asm/system.h>
+#include <linux/io.h>
+
+int print_cpuinfo(void)
+{
+ printf("CPU: Airoha EN7523/EN7529/EN7562\n");
+ return 0;
+}
+
+int dram_init(void)
+{
+ return fdtdec_setup_mem_size_base();
+}
+
+int dram_init_banksize(void)
+{
+ return fdtdec_setup_memory_banksize();
+}
+
+void __noreturn reset_cpu(void)
+{
+ writel(0x80000000, 0x1FB00040);
+ while (1) {
+ /* loop forever */
+ }
+}
diff --git a/board/airoha/en7523/Makefile b/board/airoha/en7523/Makefile
new file mode 100644
index 00000000000..c6629486f21
--- /dev/null
+++ b/board/airoha/en7523/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-y += en7523_rfb.o
diff --git a/board/airoha/en7523/en7523_rfb.c b/board/airoha/en7523/en7523_rfb.c
new file mode 100644
index 00000000000..aa73679d929
--- /dev/null
+++ b/board/airoha/en7523/en7523_rfb.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Author: Christian Marangi <ansuelsmth at gmail.com>
+ */
+
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_init(void)
+{
+ /* address of boot parameters */
+ gd->bd->bi_boot_params = CFG_SYS_SDRAM_BASE + 0x100;
+
+ return 0;
+}
diff --git a/configs/en7523_evb_defconfig b/configs/en7523_evb_defconfig
new file mode 100644
index 00000000000..0730136b041
--- /dev/null
+++ b/configs/en7523_evb_defconfig
@@ -0,0 +1,57 @@
+CONFIG_ARM=y
+CONFIG_SYS_ARCH_TIMER=y
+CONFIG_ARCH_AIROHA=y
+CONFIG_TARGET_EN7523=y
+CONFIG_TEXT_BASE=0x81E00000
+CONFIG_SYS_MALLOC_F_LEN=0x4000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_DM_GPIO=y
+CONFIG_DEFAULT_DEVICE_TREE="airoha/en7523-evb"
+CONFIG_SYS_LOAD_ADDR=0x81800000
+CONFIG_BUILD_TARGET="u-boot.bin"
+# CONFIG_EFI_LOADER is not set
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_BOOTDELAY=3
+CONFIG_DEFAULT_FDT_FILE="en7523-evb"
+CONFIG_SYS_PBSIZE=1049
+CONFIG_SYS_CONSOLE_IS_IN_ENV=y
+# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_HUSH_PARSER=y
+CONFIG_SYS_PROMPT="U-Boot> "
+CONFIG_SYS_MAXARGS=8
+CONFIG_CMD_BOOTZ=y
+CONFIG_CMD_BOOTMENU=y
+# CONFIG_CMD_ELF is not set
+# CONFIG_CMD_XIMG is not set
+CONFIG_CMD_BIND=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_MTD=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_PING=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_CMD_MTDPARTS=y
+CONFIG_CMD_LOG=y
+CONFIG_OF_UPSTREAM=y
+CONFIG_ENV_OVERWRITE=y
+CONFIG_ENV_IS_NOWHERE=y
+# CONFIG_ENV_IS_IN_MTD is not set
+CONFIG_ENV_RELOC_GD_ENV_ADDR=y
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_SYS_RX_ETH_BUFFER=8
+CONFIG_REGMAP=y
+CONFIG_DMA=y
+CONFIG_LED=y
+CONFIG_LED_GPIO=y
+# CONFIG_MMC is not set
+CONFIG_MTD=y
+CONFIG_DM_MTD=y
+CONFIG_PINCTRL=y
+CONFIG_PINCONF=y
+CONFIG_RAM=y
+CONFIG_DM_SERIAL=y
+CONFIG_SYS_NS16550=y
+CONFIG_SHA512=y
diff --git a/include/configs/en7523.h b/include/configs/en7523.h
new file mode 100644
index 00000000000..2d27b3626ae
--- /dev/null
+++ b/include/configs/en7523.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Configuration for Airoha EN7523
+ *
+ * Author: Mikhail Kshevetskiy <mikhail.kshevetskiy at iopsys.eu>
+ */
+
+#ifndef __EN7523_H
+#define __EN7523_H
+
+#include <linux/sizes.h>
+
+#define CFG_SYS_UBOOT_BASE CONFIG_TEXT_BASE
+
+#define CFG_SYS_INIT_RAM_ADDR CONFIG_TEXT_BASE
+#define CFG_SYS_INIT_RAM_SIZE SZ_2M
+
+/* DRAM */
+#define CFG_SYS_SDRAM_BASE 0x80000000
+
+#endif
--
2.51.0
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