[PATCH v2 1/2] arm: mediatek: add support for MediaTek MT8188 SoC
Macpaul Lin (林智斌)
Macpaul.Lin at mediatek.com
Wed Dec 10 04:24:38 CET 2025
On Tue, 2025-12-09 at 11:22 +0100, Julien Stephan wrote:
> From: Julien Masson <jmasson at baylibre.com>
>
> This adds basic support for MediaTek MT8188 SoC.
>
> Add watchdog support by adding upstream compatible string.
>
> Add tphy support by adding "mediatek,generic-tphy-v2" compatible
> string
> in arch/arm/dts/mt8188-u-boot.dtsi
>
> Signed-off-by: Julien Masson <jmasson at baylibre.com>
> Signed-off-by: Julien Stephan <jstephan at baylibre.com>
> ---
> MAINTAINERS | 1 +
> arch/arm/dts/mt8188-u-boot.dtsi | 10 +++++
> arch/arm/mach-mediatek/Kconfig | 11 +++++-
> arch/arm/mach-mediatek/Makefile | 1 +
> arch/arm/mach-mediatek/mt8188/Makefile | 3 ++
> arch/arm/mach-mediatek/mt8188/init.c | 70
> ++++++++++++++++++++++++++++++++++
> drivers/watchdog/mtk_wdt.c | 1 +
> 7 files changed, 96 insertions(+), 1 deletion(-)
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index
> b43dae882b3ea33c2cd745bd3759e3f4d97abc80..5b52d2fe17506d2659be9016a7c
> a639062332ae9 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -415,6 +415,7 @@ M: Chunfeng Yun <chunfeng.yun at mediatek.com>
> M: Igor Belwon <igor.belwon at mentallysanemainliners.org>
> R: GSS_MTK_Uboot_upstream <GSS_MTK_Uboot_upstream at mediatek.com>
> S: Maintained
> +F: arch/arm/dts/mt*
> F: arch/arm/mach-mediatek/
> F: arch/arm/include/asm/arch-mediatek/
> F: board/mediatek/
> diff --git a/arch/arm/dts/mt8188-u-boot.dtsi b/arch/arm/dts/mt8188-u-
> boot.dtsi
> new file mode 100644
> index
> 0000000000000000000000000000000000000000..6d1b2ab82da1c95a49b8a693eb0
> f854ab913a26b
> --- /dev/null
> +++ b/arch/arm/dts/mt8188-u-boot.dtsi
> @@ -0,0 +1,10 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Copyright (c) 2025 Baylibre SAS.
> + * Author: Julien Masson <jmasson at baylibre.com>
> + */
> +
> +&u3phy0 {
> + compatible = "mediatek,mt8188-tphy", "mediatek,generic-tphy-
> v3",
> + "mediatek,generic-tphy-v2";
> +};
> diff --git a/arch/arm/mach-mediatek/Kconfig b/arch/arm/mach-
> mediatek/Kconfig
> index
> e54c456aec0bda3bc1c06d0780d74e96a659531d..f7ef17e0203c74a5c18630636f9
> 78cbcfb948089 100644
> --- a/arch/arm/mach-mediatek/Kconfig
> +++ b/arch/arm/mach-mediatek/Kconfig
> @@ -84,6 +84,15 @@ config TARGET_MT8183
> SD and MMC cards, UFS, PWM, I2C, I2S, S/PDIF, and several
> LPDDR3
> and LPDDR4 options.
>
> +config TARGET_MT8188
> + bool "MediaTek MT8188 SoC"
> + select ARM64
> + help
> + The MediaTek MT8188 is a ARM64-based SoC with a dual-core
> Cortex-A78
> + cluster and a six-core Cortex-A55 cluster. It includes
> UART, SPI,
> + USB3.0 dual role, SD and MMC cards, UFS, PWM, I2C, I2S,
> S/PDIF, and
> + several LPDDR3 and LPDDR4 options.
> +
> config TARGET_MT8365
> bool "MediaTek MT8365 SoC"
> select ARM64
> @@ -157,7 +166,7 @@ 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
> + default "media=emmc" if TARGET_MT8516 || TARGET_MT8365 ||
> TARGET_MT8183 || TARGET_MT8188
> 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
> c11d6ad8aed6e411636fd8aea1b1eca6ba4780a8..44591bed6fa0c57a026fa0b71f5
> e46911ca18a50 100644
> --- a/arch/arm/mach-mediatek/Makefile
> +++ b/arch/arm/mach-mediatek/Makefile
> @@ -12,6 +12,7 @@ obj-$(CONFIG_TARGET_MT7986) += mt7986/
> obj-$(CONFIG_TARGET_MT7987) += mt7987/
> obj-$(CONFIG_TARGET_MT7988) += mt7988/
> obj-$(CONFIG_TARGET_MT8183) += mt8183/
> +obj-$(CONFIG_TARGET_MT8188) += mt8188/
> obj-$(CONFIG_TARGET_MT8365) += mt8365/
> obj-$(CONFIG_TARGET_MT8512) += mt8512/
> obj-$(CONFIG_TARGET_MT8516) += mt8516/
> diff --git a/arch/arm/mach-mediatek/mt8188/Makefile b/arch/arm/mach-
> mediatek/mt8188/Makefile
> new file mode 100644
> index
> 0000000000000000000000000000000000000000..886ab7e4eb9fa4533d51995b104
> 2fe2f1febdc33
> --- /dev/null
> +++ b/arch/arm/mach-mediatek/mt8188/Makefile
> @@ -0,0 +1,3 @@
> +# SPDX-License-Identifier: GPL-2.0
> +
> +obj-y += init.o
> diff --git a/arch/arm/mach-mediatek/mt8188/init.c b/arch/arm/mach-
> mediatek/mt8188/init.c
> new file mode 100644
> index
> 0000000000000000000000000000000000000000..ed67150e61192d89875a1454044
> 40a97036ed34b
> --- /dev/null
> +++ b/arch/arm/mach-mediatek/mt8188/init.c
> @@ -0,0 +1,70 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2025 MediaTek Inc.
> + * Copyright (C) 2025 BayLibre, SAS
> + * Author: Julien Masson <jmasson at baylibre.com>
> + * Chris-QJ Chen <chris-qj.chen at mediatek.com>
> + */
> +
> +#include <asm/global_data.h>
> +#include <asm/system.h>
> +#include <dm/uclass.h>
> +#include <linux/sizes.h>
> +#include <wdt.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. 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;
> +}
> +
> +int mtk_soc_early_init(void)
> +{
> + return 0;
> +}
> +
> +void reset_cpu(void)
> +{
> + struct udevice *wdt;
> +
> + if (IS_ENABLED(CONFIG_PSCI_RESET)) {
> + psci_system_reset();
> + } else {
> + uclass_first_device(UCLASS_WDT, &wdt);
> + if (wdt)
> + wdt_expire_now(wdt, 0);
> + }
> +}
> +
> +int print_cpuinfo(void)
> +{
> + printf("CPU: MediaTek MT8188\n");
> + return 0;
> +}
> diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c
> index
> 706deb9da84626d8935a30d9cf6831289804d99d..4d4ab4cbe903e867f834427dbff
> 4d9ce44efe784 100644
> --- a/drivers/watchdog/mtk_wdt.c
> +++ b/drivers/watchdog/mtk_wdt.c
> @@ -145,6 +145,7 @@ static const struct udevice_id mtk_wdt_ids[] = {
> { .compatible = "mediatek,wdt"},
> { .compatible = "mediatek,mt6589-wdt"},
> { .compatible = "mediatek,mt7986-wdt" },
> + { .compatible = "mediatek,mt8188-wdt" },
> {}
> };
>
>
> --
> 2.50.1
>
Reviewed-by: Macpaul Lin <macpaul.lin at mediatek.com>
Best regards,
Macpaul Lin
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