arm: mediatek: add support of MT8189 SoC family

Add TARGET_MT8189 for MT8189 and similar SoCs.

Signed-off-by: Chris-QJ Chen <[email protected]>
Signed-off-by: Macpaul Lin <[email protected]>
Reviewed-by: Julien Stephan <[email protected]>
Reviewed-by: Macpaul Lin <[email protected]>
Link: https://patch.msgid.link/20260323-mtk-mt8391-initial-support-v3-2-19dd92f4543f@baylibre.com
Signed-off-by: David Lechner <[email protected]>

4 files changed, 55 insertions, 1 deletions

diff --git a/arch/arm/mach-mediatek/Kconfig b/arch/arm/mach-mediatek/Kconfig
index 671a6cb1cad..b5b06f4e5b2 100644
--- a/arch/arm/mach-mediatek/Kconfig
+++ b/arch/arm/mach-mediatek/Kconfig
@@ -93,6 +93,15 @@ config TARGET_MT8188
           USB3.0 dual role, SD and MMC cards, UFS, PWM, I2C, I2S, S/PDIF, and
           several LPDDR3 and LPDDR4 options.
 
+config TARGET_MT8189
+	bool "MediaTek MT8189 SoC"
+	select ARM64
+	help
+	  The MediaTek MT8189 is a ARM64-based SoC with a dual-core Cortex-A78 and
+	  a six-core Cortex-A55. It is including UART, SPI, USB3.0 dual role,
+	  SD and MMC cards, UFS, PWM, I2C, I2S, S/PDIF, and several LPDDR4x
+	  and LPDDR5x options.
+
 config TARGET_MT8195
 	bool "MediaTek MT8195 SoC"
 	select ARM64
@@ -201,7 +210,7 @@ config SYS_CONFIG_NAME
 config MTK_BROM_HEADER_INFO
 	string
 	default "media=nor" if TARGET_MT8518 || TARGET_MT8512 || TARGET_MT7629
-	default "media=emmc" if TARGET_MT8516 || TARGET_MT8365 || TARGET_MT8183 || TARGET_MT8188 || TARGET_MT8195
+	default "media=emmc" if TARGET_MT8516 || TARGET_MT8365 || TARGET_MT8183 || TARGET_MT8188 || TARGET_MT8189 || TARGET_MT8195
 	default "lk=1" if TARGET_MT7623
 
 config MTK_TZ_MOVABLE
diff --git a/arch/arm/mach-mediatek/Makefile b/arch/arm/mach-mediatek/Makefile
index d1f64d61ab9..35f748a70d6 100644
--- a/arch/arm/mach-mediatek/Makefile
+++ b/arch/arm/mach-mediatek/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_TARGET_MT7987) += mt7987/
 obj-$(CONFIG_TARGET_MT7988) += mt7988/
 obj-$(CONFIG_TARGET_MT8183) += mt8183/
 obj-$(CONFIG_TARGET_MT8188) += mt8188/
+obj-$(CONFIG_TARGET_MT8189) += mt8189/
 obj-$(CONFIG_TARGET_MT8195) += mt8195/
 obj-$(CONFIG_TARGET_MT8365) += mt8365/
 obj-$(CONFIG_TARGET_MT8512) += mt8512/
diff --git a/arch/arm/mach-mediatek/mt8189/Makefile b/arch/arm/mach-mediatek/mt8189/Makefile
new file mode 100644
index 00000000000..886ab7e4eb9
--- /dev/null
+++ b/arch/arm/mach-mediatek/mt8189/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier:	GPL-2.0
+
+obj-y += init.o
diff --git a/arch/arm/mach-mediatek/mt8189/init.c b/arch/arm/mach-mediatek/mt8189/init.c
new file mode 100644
index 00000000000..648c17ac305
--- /dev/null
+++ b/arch/arm/mach-mediatek/mt8189/init.c
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2026 MediaTek Inc.
+ * Author: Chris-QJ Chen <[email protected]>
+ */
+
+#include <fdtdec.h>
+#include <stdio.h>
+#include <asm/global_data.h>
+#include <asm/system.h>
+#include <linux/kernel.h>
+#include <linux/sizes.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	return fdtdec_setup_mem_size_base();
+}
+
+phys_size_t get_effective_memsize(void)
+{
+	/*
+	 * Limit gd->ram_top not exceeding SZ_4G. Because some peripherals like
+	 * MMC requires DMA buffer allocated below SZ_4G.
+	 */
+	return min(SZ_4G - gd->ram_base, gd->ram_size);
+}
+
+void reset_cpu(ulong addr)
+{
+	if (!CONFIG_IS_ENABLED(SYSRESET))
+		psci_system_reset();
+}
+
+int print_cpuinfo(void)
+{
+	printf("CPU:   MediaTek MT8189\n");
+
+	return 0;
+}