arm: mediatek: add support for MediaTek MT8188 SoC

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@baylibre.com>
Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@kernel.org>
Reviewed-by: Macpaul Lin <macpaul.lin@mediatek.com>

diff --git a/MAINTAINERS b/MAINTAINERS
index b43dae882b3ea33c2cd745bd3759e3f4d97abc80..5b52d2fe17506d2659be9016a7ca639062332ae9 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -415,6 +415,7 @@ M:  Chunfeng Yun <chunfeng.yun@mediatek.com>
 M:     Igor Belwon <igor.belwon@mentallysanemainliners.org>
 R:     GSS_MTK_Uboot_upstream <GSS_MTK_Uboot_upstream@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 (file)
index 0000000..6d1b2ab
--- /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@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..f7ef17e0203c74a5c18630636f978cbcfb948089 100644 (file)
--- 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..44591bed6fa0c57a026fa0b71f5e46911ca18a50 100644 (file)
--- 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 (file)
index 0000000..886ab7e
--- /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 (file)
index 0000000..ed67150
--- /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@baylibre.com>
+ *         Chris-QJ Chen <chris-qj.chen@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..4d4ab4cbe903e867f834427dbff4d9ce44efe784 100644 (file)
--- 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" },
        {}
 };