* [PATCH v2 1/2] platform: generic: Add Metanoia MT2824 initial support
2026-06-25 7:54 [PATCH v2 0/2] Introduce Metanoia MT2824 SoC support Benoît Monin
@ 2026-06-25 7:54 ` Benoît Monin
2026-06-25 7:54 ` [PATCH v2 2/2] lib: utils/reset: Add Metanoia MT2824 system reset driver Benoît Monin
1 sibling, 0 replies; 3+ messages in thread
From: Benoît Monin @ 2026-06-25 7:54 UTC (permalink / raw)
To: opensbi
Cc: Thomas Petazzoni,
Randolph Sheng-Kai Lin(林聖凱), Jun Chang,
Benoît Monin
Add the Metanoia MT2824 as a generic platform. This SoC contains two
AX45MP cores from Andes Technology and uses Andes PMU and vendor-specific
extensions.
Originally-by: Jun Chang <jun.chang@metanoia-comm.com>
Signed-off-by: Benoît Monin <benoit.monin@bootlin.com>
---
docs/platform/generic.md | 2 +
docs/platform/metanoia-mt2824.md | 147 ++++++++++++++++++++++++++++
platform/generic/Kconfig | 7 ++
platform/generic/configs/defconfig | 1 +
platform/generic/metanoia/mt2824/mt2824.c | 31 ++++++
platform/generic/metanoia/mt2824/objects.mk | 10 ++
6 files changed, 198 insertions(+)
diff --git a/docs/platform/generic.md b/docs/platform/generic.md
index 0b896ede..760152a0 100644
--- a/docs/platform/generic.md
+++ b/docs/platform/generic.md
@@ -50,6 +50,7 @@ RISC-V Platforms Using Generic Platform
* **Tenstorrent Atlantis Platform** (*[tt-atlantis.md]*)
* **OpenPiton FPGA SoC** (*[fpga-openpiton.md]*)
* **Ariane FPGA SoC** (*[fpga-ariane.md]*)
+* **Metanoia MT2824 SoC** (*[metanoia-mt2824.md]*)
[andes-ae350.md]: andes-ae350.md
[qemu_virt.md]: qemu_virt.md
@@ -61,3 +62,4 @@ RISC-V Platforms Using Generic Platform
[tt-atlantis.md]: tt-atlantis.md
[fpga-openpiton.md]: fpga-openpiton.md
[fpga-ariane.md]: fpga-ariane.md
+[metanoia-mt2824.md]: metanoia-mt2824.md
diff --git a/docs/platform/metanoia-mt2824.md b/docs/platform/metanoia-mt2824.md
new file mode 100644
index 00000000..83017df5
--- /dev/null
+++ b/docs/platform/metanoia-mt2824.md
@@ -0,0 +1,147 @@
+Metanoia MT2824 SoC Platform
+============================
+The Metanoia MT2824 is a highly integrated 5G System-on-Chip designed
+for O-RAN radio units and small cells. It features two Andes AX45MP
+RISC-V cores. More details about the SoC and its reference platform
+named MT5824 can be found at the following [link][0].
+
+To build platform specific library and firmwares, provide the
+*PLATFORM=generic* parameter to the top level make command.
+
+[0]: https://metanoia-comm.com/products/5g/mt5824/
+
+Platform Options
+----------------
+
+The Metanoia MT2824 platform does not have any platform-specific options.
+
+Building Metanoia MT2824 Platform
+---------------------------------
+
+```
+make PLATFORM=generic
+```
+
+DTS Example: (Metanoia MT2824)
+------------------------------
+
+```
+ compatible = "metanoia,mt2824";
+
+ cpus: cpus {
+ #address-cells = <0x01>;
+ #size-cells = <0x00>;
+ timebase-frequency = <20000000>;
+
+ cpu0: cpu@0 {
+ device_type = "cpu";
+ reg = <0x00>;
+ status = "okay";
+ compatible = "andestech,ax45mp", "riscv";
+ riscv,isa-base = "rv64i";
+ riscv,isa-extensions = "i", "m", "a", "f", "d", "c",
+ "zicntr", "zicsr", "zifencei",
+ "zihpm", "xandespmu";
+ mmu-type = "riscv,sv39";
+ clock-frequency = <900000000>;
+ i-cache-size = <0x8000>;
+ i-cache-sets = <0x100>;
+ i-cache-line-size = <0x40>;
+ i-cache-block-size = <0x40>;
+ d-cache-size = <0x8000>;
+ d-cache-sets = <0x80>;
+ d-cache-line-size = <0x40>;
+ d-cache-block-size = <0x40>;
+ next-level-cache = <0x01>;
+
+ cpu0intc: interrupt-controller {
+ #interrupt-cells = <0x01>;
+ interrupt-controller;
+ compatible = "andestech,cpu-intc", "riscv,cpu-intc";
+ };
+ };
+
+ cpu1: cpu@1 {
+ device_type = "cpu";
+ reg = <0x01>;
+ status = "okay";
+ compatible = "andestech,ax45mp", "riscv";
+ riscv,isa-base = "rv64i";
+ riscv,isa-extensions = "i", "m", "a", "f", "d", "c",
+ "zicntr", "zicsr", "zifencei",
+ "zihpm", "xandespmu";
+ mmu-type = "riscv,sv39";
+ clock-frequency = <900000000>;
+ i-cache-size = <0x8000>;
+ i-cache-sets = <0x100>;
+ i-cache-line-size = <0x40>;
+ i-cache-block-size = <0x40>;
+ d-cache-size = <0x8000>;
+ d-cache-sets = <0x80>;
+ d-cache-line-size = <0x40>;
+ d-cache-block-size = <0x40>;
+ next-level-cache = <0x01>;
+
+ cpu1intc: interrupt-controller {
+ #interrupt-cells = <0x01>;
+ interrupt-controller;
+ compatible = "andestech,cpu-intc", "riscv,cpu-intc";
+ };
+ };
+ };
+
+ l2c: l2-cache@a000000 {
+ compatible = "andestech,ax45mp-cache", "cache";
+ reg = <0x00 0xa000000 0x00 0x40000>;
+ cache-line-size = <64>;
+ cache-level = <2>;
+ cache-size = <0x40000>;
+ cache-sets = <1024>;
+ cache-unified;
+ interrupts = <1 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-parent = <&plic>;
+ };
+
+ soc: soc {
+ #address-cells = <0x02>;
+ #size-cells = <0x02>;
+ compatible = "simple-bus";
+ interrupt-parent = <&plic>;
+ ranges;
+
+ plic: interrupt-controller@c000000 {
+ compatible = "metanoia,mt2824-plic", "andestech,nceplic100";
+ reg = <0x0 0x0c000000 0x0 0x400000>;
+ interrupts-extended =
+ <&cpu0intc 0x0b>,
+ <&cpu0intc 0x09>,
+ <&cpu1intc 0x0b>,
+ <&cpu1intc 0x09>;
+ interrupt-controller;
+ #address-cells = <0x00>;
+ #interrupt-cells = <0x02>;
+ riscv,ndev = <0x47>;
+ };
+
+ plicsw: interrupt-controller@c800000 {
+ compatible = "metanoia,mt2824-plicsw", "andestech,plicsw";
+ reg = <0x00 0x0c800000 0x00 0x400000>;
+ interrupts-extended =
+ <&cpu0intc IRQ_TYPE_EDGE_BOTH>,
+ <&cpu1intc IRQ_TYPE_EDGE_BOTH>;
+ };
+
+ plmt0@c400000 {
+ compatible = "metanoia,mt2824-plmt", "andestech,plmt0";
+ reg = <0x0 0x0c400000 0x0 0x00400000>;
+ interrupts-extended =
+ <&cpu0intc 0x07>,
+ <&cpu1intc 0x07>;
+ };
+
+ reboot: reboot@10000004 {
+ compatible = "metanoia,mt2824-reboot";
+ reg = <0x0 0x10000004 0x0 0x08>;
+ };
+ };
+```
diff --git a/platform/generic/Kconfig b/platform/generic/Kconfig
index d594b140..64fc4a64 100644
--- a/platform/generic/Kconfig
+++ b/platform/generic/Kconfig
@@ -51,6 +51,13 @@ config PLATFORM_ESWIN_EIC770X
bool "ESWIN EIC770X support"
default n
+config PLATFORM_METANOIA_MT2824
+ bool "Metanoia MT2824 support"
+ select ANDES_PMA
+ select ANDES_SBI
+ select ANDES_PMU
+ default n
+
config PLATFORM_OPENHWGROUP_OPENPITON
bool "OpenHWGroup Openpiton support"
default n
diff --git a/platform/generic/configs/defconfig b/platform/generic/configs/defconfig
index 969639e3..820c98b6 100644
--- a/platform/generic/configs/defconfig
+++ b/platform/generic/configs/defconfig
@@ -2,6 +2,7 @@ CONFIG_PLATFORM_ALLWINNER_D1=y
CONFIG_PLATFORM_ANDES_AE350=y
CONFIG_PLATFORM_ANDES_QILAI=y
CONFIG_PLATFORM_ESWIN_EIC770X=y
+CONFIG_PLATFORM_METANOIA_MT2824=y
CONFIG_PLATFORM_OPENHWGROUP_ARIANE=y
CONFIG_PLATFORM_OPENHWGROUP_OPENPITON=y
CONFIG_PLATFORM_RENESAS_RZFIVE=y
diff --git a/platform/generic/metanoia/mt2824/mt2824.c b/platform/generic/metanoia/mt2824/mt2824.c
new file mode 100644
index 00000000..a34304b9
--- /dev/null
+++ b/platform/generic/metanoia/mt2824/mt2824.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: BSD-2-Clause
+/*
+ * Copyright (C) 2026 Metanoia Communication Inc.
+ *
+ * Authors:
+ * Jun Chang <jun.chang@metanoia-comm.com>
+ */
+
+#include <andes/andes_pmu.h>
+#include <andes/andes_sbi.h>
+#include <platform_override.h>
+
+static int metanoia_mt2824_platform_init(const void *fdt, int nodeoff,
+ const struct fdt_match *match)
+{
+ generic_platform_ops.extensions_init = andes_pmu_extensions_init;
+ generic_platform_ops.pmu_init = andes_pmu_init;
+ generic_platform_ops.vendor_ext_provider = andes_sbi_vendor_ext_provider;
+
+ return 0;
+}
+
+static const struct fdt_match metanoia_mt2824_match[] = {
+ { .compatible = "metanoia,mt2824" },
+ { /* sentinel */ }
+};
+
+const struct fdt_driver metanoia_mt2824 = {
+ .match_table = metanoia_mt2824_match,
+ .init = metanoia_mt2824_platform_init,
+};
diff --git a/platform/generic/metanoia/mt2824/objects.mk b/platform/generic/metanoia/mt2824/objects.mk
new file mode 100644
index 00000000..b97c7775
--- /dev/null
+++ b/platform/generic/metanoia/mt2824/objects.mk
@@ -0,0 +1,10 @@
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+# Copyright (C) 2026 Metanoia Communication Inc.
+#
+
+ifeq ($(PLATFORM_RISCV_XLEN), 64)
+carray-platform_override_modules-$(CONFIG_PLATFORM_METANOIA_MT2824) += metanoia_mt2824
+platform-objs-$(CONFIG_PLATFORM_METANOIA_MT2824) += metanoia/mt2824/mt2824.o
+endif
--
2.54.0
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^ permalink raw reply related [flat|nested] 3+ messages in thread* [PATCH v2 2/2] lib: utils/reset: Add Metanoia MT2824 system reset driver
2026-06-25 7:54 [PATCH v2 0/2] Introduce Metanoia MT2824 SoC support Benoît Monin
2026-06-25 7:54 ` [PATCH v2 1/2] platform: generic: Add Metanoia MT2824 initial support Benoît Monin
@ 2026-06-25 7:54 ` Benoît Monin
1 sibling, 0 replies; 3+ messages in thread
From: Benoît Monin @ 2026-06-25 7:54 UTC (permalink / raw)
To: opensbi
Cc: Thomas Petazzoni,
Randolph Sheng-Kai Lin(林聖凱), Jun Chang,
Benoît Monin
Add a driver for the system reset function found in Metanoia MT2824 SoC
and enable it in the generic platform configuration.
Originally-by: Jun Chang <jun.chang@metanoia-comm.com>
Signed-off-by: Benoît Monin <benoit.monin@bootlin.com>
---
lib/utils/reset/Kconfig | 4 ++
lib/utils/reset/fdt_reset_metanoia.c | 72 ++++++++++++++++++++++++++++++++++++
lib/utils/reset/objects.mk | 3 ++
platform/generic/configs/defconfig | 1 +
4 files changed, 80 insertions(+)
diff --git a/lib/utils/reset/Kconfig b/lib/utils/reset/Kconfig
index b2ac120e..8988548c 100644
--- a/lib/utils/reset/Kconfig
+++ b/lib/utils/reset/Kconfig
@@ -29,6 +29,10 @@ config FDT_RESET_LITEX
depends on FDT_GPIO
default n
+config FDT_RESET_METANOIA
+ bool "Metanoia FDT reset driver"
+ default n
+
config FDT_RESET_RPMI
bool "RPMI FDT reset driver"
depends on FDT_MAILBOX && RPMI_MAILBOX
diff --git a/lib/utils/reset/fdt_reset_metanoia.c b/lib/utils/reset/fdt_reset_metanoia.c
new file mode 100644
index 00000000..bdf8c492
--- /dev/null
+++ b/lib/utils/reset/fdt_reset_metanoia.c
@@ -0,0 +1,72 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2026 Metanoia Communications Inc.
+ *
+ */
+
+#include <sbi/riscv_io.h>
+#include <sbi/sbi_platform.h>
+#include <sbi/sbi_system.h>
+#include <sbi_utils/fdt/fdt_helper.h>
+#include <sbi_utils/fdt/fdt_driver.h>
+
+#define SWRSTREQ_CTRL_REG_OFFSET 0x00
+#define SWRSTREQ_REG_OFFSET 0x04
+
+struct reset_metanoia_data {
+ u8 *reg_base;
+};
+
+static struct reset_metanoia_data reset_data;
+
+static int metanoia_system_reset_check(u32 type, u32 reason)
+{
+ switch (type) {
+ case SBI_SRST_RESET_TYPE_WARM_REBOOT:
+ case SBI_SRST_RESET_TYPE_COLD_REBOOT:
+ return 1;
+ case SBI_SRST_RESET_TYPE_SHUTDOWN:
+ default:
+ return 0;
+ }
+}
+
+static void metanoia_system_reset(u32 type, u32 reason)
+{
+ writew(0x1, reset_data.reg_base + SWRSTREQ_CTRL_REG_OFFSET);
+ writew(0x1, reset_data.reg_base + SWRSTREQ_REG_OFFSET);
+}
+
+static struct sbi_system_reset_device metanoia_reset = {
+ .name = "metanoia-mt2824-reset",
+ .system_reset_check = metanoia_system_reset_check,
+ .system_reset = metanoia_system_reset,
+};
+
+static int metanoia_reset_init(const void *fdt, int nodeoff,
+ const struct fdt_match *match)
+{
+ u64 reg_addr;
+ int rc;
+
+ rc = fdt_get_node_addr_size(fdt, nodeoff, 0, ®_addr, NULL);
+ if (rc < 0 || !reg_addr)
+ return SBI_ENODEV;
+
+ reset_data.reg_base = (u8 *)reg_addr;
+
+ sbi_system_reset_add_device(&metanoia_reset);
+
+ return 0;
+}
+
+static const struct fdt_match metanoia_reset_match[] = {
+ { .compatible = "metanoia,mt2824-reboot" },
+ { /* sentinel */ }
+};
+
+const struct fdt_driver fdt_reset_metanoia = {
+ .match_table = metanoia_reset_match,
+ .init = metanoia_reset_init,
+};
diff --git a/lib/utils/reset/objects.mk b/lib/utils/reset/objects.mk
index 38b4e306..a9b6edad 100644
--- a/lib/utils/reset/objects.mk
+++ b/lib/utils/reset/objects.mk
@@ -20,6 +20,9 @@ libsbiutils-objs-$(CONFIG_FDT_RESET_HTIF) += reset/fdt_reset_htif.o
carray-fdt_early_drivers-$(CONFIG_FDT_RESET_LITEX) += fdt_reset_litex
libsbiutils-objs-$(CONFIG_FDT_RESET_LITEX) += reset/fdt_reset_litex.o
+carray-fdt_early_drivers-$(CONFIG_FDT_RESET_METANOIA) += fdt_reset_metanoia
+libsbiutils-objs-$(CONFIG_FDT_RESET_METANOIA) += reset/fdt_reset_metanoia.o
+
carray-fdt_early_drivers-$(CONFIG_FDT_RESET_SG2042_HWMON_MCU) += fdt_reset_sg2042_mcu
libsbiutils-objs-$(CONFIG_FDT_RESET_SG2042_HWMON_MCU) += reset/fdt_reset_sg2042_hwmon_mcu.o
diff --git a/platform/generic/configs/defconfig b/platform/generic/configs/defconfig
index 820c98b6..ac76eb27 100644
--- a/platform/generic/configs/defconfig
+++ b/platform/generic/configs/defconfig
@@ -52,6 +52,7 @@ CONFIG_FDT_RESET_ATCWDT200=y
CONFIG_FDT_RESET_GPIO=y
CONFIG_FDT_RESET_LITEX=y
CONFIG_FDT_RESET_HTIF=y
+CONFIG_FDT_RESET_METANOIA=y
CONFIG_FDT_RESET_RPMI=y
CONFIG_FDT_RESET_SG2042_HWMON_MCU=y
CONFIG_FDT_RESET_SPACEMIT_P1=y
--
2.54.0
--
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^ permalink raw reply related [flat|nested] 3+ messages in thread