[PATCH v2 2/2] riscv: dts: spacemit: Add K3 BS01DCMA RV2768 support
Troy Mitchell
troy.mitchell at linux.spacemit.com
Fri Nov 13 06:28:18 PST 2026
BS01DCMA is a compute module carrying two independent K3 nodes. Each
node has a SpacemiT K3 SoC, 16 GiB of LPDDR5 memory, a P1 PMIC, an
EEPROM and QSPI NOR flash. The SpacemiT Cluster Server RV2768 hosts
several BS01DCMA modules; its carrier only connects them to PCIe
network cards.
Add a dtsi for the module with the serial console, EEPROM, PMIC and
QSPI NOR flash, and a dts for a K3 node in the RV2768.
The NOR flash is a 1.8 V part powered from the PMIC_VCC1V8_QSPI rail,
which is ALDO2 of the P1 PMIC. Its partitions follow the layout of the
SpacemiT boot firmware. U-Boot and EDK2 both go into the partition at
0x210000; EDK2 keeps its UEFI variable store at the fixed offset
0x700000, so that partition ends below it and the store is described
as a separate read-only partition.
Signed-off-by: Troy Mitchell <troy.mitchell at linux.spacemit.com>
---
arch/riscv/boot/dts/spacemit/Makefile | 1 +
.../riscv/boot/dts/spacemit/k3-bs01dcma-rv2768.dts | 19 ++
arch/riscv/boot/dts/spacemit/k3-bs01dcma.dtsi | 264 +++++++++++++++++++++
3 files changed, 284 insertions(+)
diff --git a/arch/riscv/boot/dts/spacemit/Makefile b/arch/riscv/boot/dts/spacemit/Makefile
index 851b701e5da4..a00c31a2c3e6 100644
--- a/arch/riscv/boot/dts/spacemit/Makefile
+++ b/arch/riscv/boot/dts/spacemit/Makefile
@@ -5,6 +5,7 @@ dtb-$(CONFIG_ARCH_SPACEMIT) += k1-milkv-jupiter.dtb
dtb-$(CONFIG_ARCH_SPACEMIT) += k1-musepi-pro.dtb
dtb-$(CONFIG_ARCH_SPACEMIT) += k1-orangepi-r2s.dtb
dtb-$(CONFIG_ARCH_SPACEMIT) += k1-orangepi-rv2.dtb
+dtb-$(CONFIG_ARCH_SPACEMIT) += k3-bs01dcma-rv2768.dtb
dtb-$(CONFIG_ARCH_SPACEMIT) += k3-com260-ifx.dtb
dtb-$(CONFIG_ARCH_SPACEMIT) += k3-deepcomputing-fml13v05.dtb
dtb-$(CONFIG_ARCH_SPACEMIT) += k3-pico-itx.dtb
diff --git a/arch/riscv/boot/dts/spacemit/k3-bs01dcma-rv2768.dts b/arch/riscv/boot/dts/spacemit/k3-bs01dcma-rv2768.dts
new file mode 100644
index 000000000000..5b0449314d64
--- /dev/null
+++ b/arch/riscv/boot/dts/spacemit/k3-bs01dcma-rv2768.dts
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (c) 2026 SpacemiT (Hangzhou) Technology Co. Ltd
+ */
+
+#include "k3-bs01dcma.dtsi"
+
+/ {
+ model = "SpacemiT K3 RV2768 Cluster Server";
+ compatible = "spacemit,k3-bs01dcma-rv2768", "spacemit,k3-bs01dcma", "spacemit,k3";
+
+ aliases {
+ serial0 = &uart0;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+};
diff --git a/arch/riscv/boot/dts/spacemit/k3-bs01dcma.dtsi b/arch/riscv/boot/dts/spacemit/k3-bs01dcma.dtsi
new file mode 100644
index 000000000000..0f9375c38e40
--- /dev/null
+++ b/arch/riscv/boot/dts/spacemit/k3-bs01dcma.dtsi
@@ -0,0 +1,264 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (c) 2026 SpacemiT (Hangzhou) Technology Co. Ltd
+ */
+
+#include "k3.dtsi"
+#include "k3-pinctrl.dtsi"
+
+/ {
+ model = "SpacemiT K3 BS01DCMA Module";
+ compatible = "spacemit,k3-bs01dcma", "spacemit,k3";
+
+ memory at 100000000 {
+ device_type = "memory";
+ reg = <0x1 0x00000000 0x4 0x00000000>;
+ };
+
+ reg_5v_sys: regulator-5v-sys {
+ compatible = "regulator-fixed";
+ regulator-name = "P5V0_SYS";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ regulator-always-on;
+ };
+};
+
+&i2c2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c2_1_cfg>;
+ status = "okay";
+
+ eeprom at 50 {
+ compatible = "atmel,24c02";
+ reg = <0x50>;
+ pagesize = <8>;
+ read-only;
+ size = <256>;
+ status = "okay";
+
+ nvmem-layout {
+ compatible = "onie,tlv-layout";
+
+ mac-address {
+ #nvmem-cell-cells = <1>;
+ };
+
+ num-macs {
+ };
+
+ product-name {
+ };
+
+ serial-number {
+ };
+ };
+ };
+};
+
+&i2c8 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c8_cfg>;
+ status = "okay";
+
+ pmic at 41 {
+ compatible = "spacemit,p1";
+ reg = <0x41>;
+ interrupts = <64 IRQ_TYPE_LEVEL_HIGH>;
+ vin1-supply = <®_5v_sys>;
+ vin2-supply = <®_5v_sys>;
+ vin3-supply = <®_5v_sys>;
+ vin4-supply = <®_5v_sys>;
+ vin5-supply = <®_5v_sys>;
+ vin6-supply = <®_5v_sys>;
+ aldoin-supply = <®_5v_sys>;
+ dldoin1-supply = <&buck4>;
+ dldoin2-supply = <&buck4>;
+
+ regulators {
+ buck1: buck1 {
+ regulator-min-microvolt = <1050000>;
+ regulator-max-microvolt = <1050000>;
+ regulator-ramp-delay = <5000>;
+ regulator-always-on;
+ };
+
+ buck2: buck2 {
+ regulator-min-microvolt = <1050000>;
+ regulator-max-microvolt = <1050000>;
+ regulator-ramp-delay = <5000>;
+ regulator-always-on;
+ };
+
+ buck3: buck3 {
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <800000>;
+ regulator-ramp-delay = <5000>;
+ regulator-always-on;
+ };
+
+ buck4: buck4 {
+ regulator-min-microvolt = <2100000>;
+ regulator-max-microvolt = <2100000>;
+ regulator-ramp-delay = <5000>;
+ regulator-always-on;
+ };
+
+ buck5: buck5 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-ramp-delay = <5000>;
+ regulator-always-on;
+ };
+
+ buck6: buck6 {
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <500000>;
+ regulator-ramp-delay = <5000>;
+ regulator-always-on;
+ };
+
+ aldo1: aldo1 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ aldo2: aldo2 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ aldo3: aldo3 {
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <3400000>;
+ };
+
+ aldo4: aldo4 {
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ dldo1: dldo1 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ dldo2: dldo2 {
+ regulator-min-microvolt = <900000>;
+ regulator-max-microvolt = <900000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ dldo3: dldo3 {
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <800000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ dldo4: dldo4 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ dldo5: dldo5 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ dldo6: dldo6 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ dldo7: dldo7 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+ };
+ };
+};
+
+&qspi {
+ pinctrl-names = "default";
+ pinctrl-0 = <&qspi_cfg>;
+ status = "okay";
+
+ flash at 0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <26500000>;
+ spi-rx-bus-width = <4>;
+ spi-tx-bus-width = <4>;
+ vcc-supply = <&aldo2>; /* PMIC_VCC1V8_QSPI */
+ m25p,fast-read;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ bootinfo at 0 {
+ reg = <0x0 0x20000>;
+ };
+
+ fsbl at 20000 {
+ reg = <0x20000 0x80000>;
+ };
+
+ env at a0000 {
+ reg = <0xa0000 0x10000>;
+ };
+
+ esos at b0000 {
+ reg = <0xb0000 0x100000>;
+ };
+
+ opensbi at 1b0000 {
+ reg = <0x1b0000 0x60000>;
+ };
+
+ uboot at 210000 {
+ reg = <0x210000 0x4f0000>;
+ };
+
+ var at 700000 {
+ reg = <0x700000 0xc0000>;
+ read-only;
+ };
+ };
+ };
+};
+
+&qspi_cfg {
+ qspi-pins {
+ power-source = <1800>;
+ };
+
+ qspi-cs0-pins {
+ power-source = <1800>;
+ };
+};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_0_cfg>;
+ status = "okay";
+};
--
2.56.0
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