[PATCH 1/4] arm: mediatek: add support of MT8189 SoC family

[Macpaul Lin (林智斌)]

On Mon, 2026-02-09 at 12:23 -0600, David Lechner wrote:
> From: Chris-QJ Chen <chris-qj.chen at mediatek.com>
> 
> Add TARGET_MT8189 for MT8189 and similar SoCs.
> 
> Signed-off-by: Chris-QJ Chen <chris-qj.chen at mediatek.com>
> Signed-off-by: Macpaul Lin <macpaul.lin at mediatek.com>
> Signed-off-by: David Lechner <dlechner at baylibre.com>
> ---
>  arch/arm/mach-mediatek/Kconfig         | 11 ++++++-
>  arch/arm/mach-mediatek/Makefile        |  1 +
>  arch/arm/mach-mediatek/mt8189/Makefile |  3 ++
>  arch/arm/mach-mediatek/mt8189/init.c   | 58
> ++++++++++++++++++++++++++++++++++
>  4 files changed, 72 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-mediatek/Kconfig b/arch/arm/mach-
> mediatek/Kconfig
> index 8da4ba5ceab..bdbc4233054 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..56e852e2374
> --- /dev/null
> +++ b/arch/arm/mach-mediatek/mt8189/init.c
> @@ -0,0 +1,58 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2026 MediaTek Inc.
> + * Author: Chris-QJ Chen <chris-qj.chen at mediatek.com>
> + */
> +
> +#include <fdtdec.h>
> +#include <stdio.h>
> +#include <asm/global_data.h>
> +#include <asm/system.h>
> +#include <linux/sizes.h>
> +
> +DECLARE_GLOBAL_DATA_PTR;
> +
> +int dram_init(void)
> +{
> +	int ret;
> +
> +	ret = fdtdec_setup_memory_banksize();
> +	if (ret)
> +		return ret;
> +
> +	fdtdec_setup_mem_size_base();
> +
> +	/*
> +	 * Limit gd->ram_top not exceeding SZ_4G.
> +	 * Because some periphals like mmc requires DMA buffer
> +	 * allocated below SZ_4G.
> +	 *
> +	 * Note: SZ_1M is for adjusting gd->relocaddr,
> +	 *       the reserved memory for u-boot itself.
> +	 */
> +	if (gd->ram_base + gd->ram_size >= SZ_4G)
> +		gd->mon_len = (gd->ram_base + gd->ram_size + SZ_1M)
> - SZ_4G;
> +
> +	return 0;
> +}
> +
> +int dram_init_banksize(void)
> +{
> +	gd->bd->bi_dram[0].start = gd->ram_base;
> +	gd->bd->bi_dram[0].size = gd->ram_size;
> +
> +	return 0;
> +}
> +
> +void reset_cpu(ulong addr)
> +{
> +	if (!CONFIG_IS_ENABLED(SYSRESET))
> +		psci_system_reset();
> +}
> +
> +int print_cpuinfo(void)
> +{
> +	printf("CPU:   MediaTek MT8391\n");
> +
> +	return 0;
> +}
> 

Reviewed-by: Macpaul Lin <macpaul.lin at mediatek.com>

Thanks!
Macpaul Lin