This adds basic support for MediaTek MT8195 SoC. Add watchdog support by adding upstream compatible string.
Signed-off-by: Julien Stephan <[email protected]> --- arch/arm/mach-mediatek/Kconfig | 11 +++- arch/arm/mach-mediatek/Makefile | 1 + arch/arm/mach-mediatek/mt8195/Makefile | 3 ++ arch/arm/mach-mediatek/mt8195/init.c | 91 ++++++++++++++++++++++++++++++++++ drivers/watchdog/mtk_wdt.c | 1 + 5 files changed, 106 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-mediatek/Kconfig b/arch/arm/mach-mediatek/Kconfig index d1d2605b2cc..69d6208b03d 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_MT8195 + bool "MediaTek MT8195 SoC" + select ARM64 + help + The MediaTek MT8195 is a ARM64-based SoC with a quad-core Cortex-A73 and + a quad-core Cortex-A53. It is including 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 @@ -165,7 +174,7 @@ 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 + default "media=emmc" if TARGET_MT8516 || TARGET_MT8365 || TARGET_MT8183 || TARGET_MT8188 || 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 44591bed6fa..723862722b1 100644 --- a/arch/arm/mach-mediatek/Makefile +++ b/arch/arm/mach-mediatek/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_TARGET_MT7987) += mt7987/ obj-$(CONFIG_TARGET_MT7988) += mt7988/ obj-$(CONFIG_TARGET_MT8183) += mt8183/ obj-$(CONFIG_TARGET_MT8188) += mt8188/ +obj-$(CONFIG_TARGET_MT8195) += mt8195/ obj-$(CONFIG_TARGET_MT8365) += mt8365/ obj-$(CONFIG_TARGET_MT8512) += mt8512/ obj-$(CONFIG_TARGET_MT8516) += mt8516/ diff --git a/arch/arm/mach-mediatek/mt8195/Makefile b/arch/arm/mach-mediatek/mt8195/Makefile new file mode 100644 index 00000000000..886ab7e4eb9 --- /dev/null +++ b/arch/arm/mach-mediatek/mt8195/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-y += init.o diff --git a/arch/arm/mach-mediatek/mt8195/init.c b/arch/arm/mach-mediatek/mt8195/init.c new file mode 100644 index 00000000000..c399550b8fc --- /dev/null +++ b/arch/arm/mach-mediatek/mt8195/init.c @@ -0,0 +1,91 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2026 MediaTek Inc. + * Copyright (C) 2026 BayLibre, SAS + * Author: Julien Stephan <[email protected]> + * Chris-QJ Chen <[email protected]> + */ + +#include <asm/armv8/mmu.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 MT8195\n"); + return 0; +} + +static struct mm_region mt8195_mem_map[] = { + { + /* DDR */ + .virt = 0x40000000UL, + .phys = 0x40000000UL, + .size = 0x200000000UL, + .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | PTE_BLOCK_OUTER_SHARE, + }, { + .virt = 0x00000000UL, + .phys = 0x00000000UL, + .size = 0x20000000UL, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | + PTE_BLOCK_NON_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + 0, + } +}; + +struct mm_region *mem_map = mt8195_mem_map; diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c index 4d4ab4cbe90..3c7e043c08e 100644 --- a/drivers/watchdog/mtk_wdt.c +++ b/drivers/watchdog/mtk_wdt.c @@ -146,6 +146,7 @@ static const struct udevice_id mtk_wdt_ids[] = { { .compatible = "mediatek,mt6589-wdt"}, { .compatible = "mediatek,mt7986-wdt" }, { .compatible = "mediatek,mt8188-wdt" }, + { .compatible = "mediatek,mt8195-wdt" }, {} }; -- 2.52.0
