From 7bd050c8a49e790d216a86148f586dafdbf39ec0 Mon Sep 17 00:00:00 2001 From: Junhui Liu Date: Fri, 22 May 2026 18:01:33 +0800 Subject: [PATCH 1/3] dt-bindings: riscv: spacemit: Add Banana Pi BPI-CM6 compatible The Banana Pi BPI-CM6 IO board consists of the BPI-CM6 compute module plugged into an IO carrier board, which is used for evaluation and development. The core CM6 module is based on the SpacemiT K1 SoC and provides PMIC, DDR, the eth0 PHY and wireless connectivity. The carrier board extends this by adding the eth1 PHY and external interfaces including Ethernet, PCIe M.2, USB, MicroSD, QSPI, and serial console connectivity. Signed-off-by: Junhui Liu Signed-off-by: Linux RISC-V bot --- Documentation/devicetree/bindings/riscv/spacemit.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/riscv/spacemit.yaml b/Documentation/devicetree/bindings/riscv/spacemit.yaml index b958b94a924dee..5d02c394abc40a 100644 --- a/Documentation/devicetree/bindings/riscv/spacemit.yaml +++ b/Documentation/devicetree/bindings/riscv/spacemit.yaml @@ -19,6 +19,11 @@ properties: const: '/' compatible: oneOf: + - items: + - enum: + - bananapi,bpi-cm6-io + - const: bananapi,bpi-cm6 + - const: spacemit,k1 - items: - enum: - bananapi,bpi-f3 From 7601178b17f24ab1a1a0b1b91fffaea219c9093c Mon Sep 17 00:00:00 2001 From: Junhui Liu Date: Fri, 22 May 2026 18:01:34 +0800 Subject: [PATCH 2/3] riscv: dts: spacemit: k1: Split gmac_clk_ref into independent pinctrl groups The gmac_clk_ref signal is optional for the GMAC controller and is not strictly required for all hardware designs. In several already upstreamed K1 boards, this signal remains unconnected or the corresponding resistor is marked as NC. Furthermore, the pins for gmac0_clk_ref (GPIO 45) and gmac1_clk_ref (GPIO 46) may be used as GPIOs for other functions even when the Ethernet controller is active. Splitting these into independent groups avoids pinmux conflicts and allows boards to use the reference clock signal only when it is actually needed. Fixes: 60775f28cfb7 ("riscv: dts: spacemit: Add Ethernet support for K1") Signed-off-by: Junhui Liu Signed-off-by: Linux RISC-V bot --- arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 24 ++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi index b13dcb10f4d660..39682e8b4ed91c 100644 --- a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi @@ -27,8 +27,16 @@ , /* gmac0_tx_en */ , /* gmac0_mdc */ , /* gmac0_mdio */ - , /* gmac0_int_n */ - ; /* gmac0_clk_ref */ + ; /* gmac0_int_n */ + + bias-pull-up = <0>; + drive-strength = <21>; + }; + }; + + gmac0_clk_ref_cfg: gmac0-clk-ref-cfg { + gmac0-clk-ref-pins { + pinmux = ; /* gmac0_clk_ref */ bias-pull-up = <0>; drive-strength = <21>; @@ -51,8 +59,16 @@ , /* gmac1_tx_en */ , /* gmac1_mdc */ , /* gmac1_mdio */ - , /* gmac1_int_n */ - ; /* gmac1_clk_ref */ + ; /* gmac1_int_n */ + + bias-pull-up = <0>; + drive-strength = <21>; + }; + }; + + gmac1_clk_ref_cfg: gmac1-clk-ref-cfg { + gmac1-clk-ref-pins { + pinmux = ; /* gmac1_clk_ref */ bias-pull-up = <0>; drive-strength = <21>; From 9e446289288a9637c676325df78cfa4a5d343a1c Mon Sep 17 00:00:00 2001 From: Junhui Liu Date: Fri, 22 May 2026 18:01:35 +0800 Subject: [PATCH 3/3] riscv: dts: spacemit: k1: Add Banana Pi BPI-CM6 IO board The Banana Pi BPI-CM6 IO board combines the BPI-CM6 compute module with an IO carrier board. The core module integrates the SpacemiT K1 SoC, PMIC, DDR, eMMC, the eth0 PHY, and wireless connectivity. The companion IO carrier board extends it by providing the eth1 PHY and exposing standard interfaces, including dual Gigabit Ethernet, MicroSD, two USB-A ports, a USB Type-C port, two PCIe M.2 slots, and a serial console. The board also has two I2C EEPROMs. One is on the core module, which stores factory manufacturing data and is marked read-only. The other is on the carrier board, which is shipped unprogrammed and left writable for evaluation purposes. Add initial support for UART console, eMMC, SD card, I2C, EEPROMs, PCIe, USB, and dual Ethernet interfaces. Link: https://docs.banana-pi.org/en/BPI-CM6/BananaPi_BPI-CM6 Signed-off-by: Junhui Liu Signed-off-by: Linux RISC-V bot --- arch/riscv/boot/dts/spacemit/Makefile | 1 + .../boot/dts/spacemit/k1-bananapi-cm6-io.dts | 215 +++++++++++++++++ .../boot/dts/spacemit/k1-bananapi-cm6.dtsi | 227 ++++++++++++++++++ 3 files changed, 443 insertions(+) create mode 100644 arch/riscv/boot/dts/spacemit/k1-bananapi-cm6-io.dts create mode 100644 arch/riscv/boot/dts/spacemit/k1-bananapi-cm6.dtsi diff --git a/arch/riscv/boot/dts/spacemit/Makefile b/arch/riscv/boot/dts/spacemit/Makefile index 7e2b8770257181..15772a5267085b 100644 --- a/arch/riscv/boot/dts/spacemit/Makefile +++ b/arch/riscv/boot/dts/spacemit/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 +dtb-$(CONFIG_ARCH_SPACEMIT) += k1-bananapi-cm6-io.dtb dtb-$(CONFIG_ARCH_SPACEMIT) += k1-bananapi-f3.dtb dtb-$(CONFIG_ARCH_SPACEMIT) += k1-milkv-jupiter.dtb dtb-$(CONFIG_ARCH_SPACEMIT) += k1-musepi-pro.dtb diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-cm6-io.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-cm6-io.dts new file mode 100644 index 00000000000000..b2767f44e8d62d --- /dev/null +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-cm6-io.dts @@ -0,0 +1,215 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/* + * Copyright (C) 2026 Junhui Liu + */ + +#include "k1-bananapi-cm6.dtsi" + +#include + +/ { + model = "Banana Pi BPI-CM6 IO Board"; + compatible = "bananapi,bpi-cm6-io", "bananapi,bpi-cm6", "spacemit,k1"; + + aliases { + ethernet0 = ð0; + ethernet1 = ð1; + serial0 = &uart0; + }; + + chosen { + stdout-path = "serial0:115200n8"; + }; + + leds { + compatible = "gpio-leds"; + + led0 { + color = ; + gpios = <&gpio K1_GPIO(96) GPIO_ACTIVE_LOW>; + }; + + led1 { + color = ; + gpios = <&gpio K1_GPIO(97) GPIO_ACTIVE_LOW>; + }; + }; + + vdd_sys_12v: regulator-vdd-sys-12v { + compatible = "regulator-fixed"; + regulator-name = "VDD_SYS"; + regulator-min-microvolt = <12000000>; + regulator-max-microvolt = <12000000>; + regulator-boot-on; + regulator-always-on; + }; + + reg_vdd_5v0: regulator-vdd-5v0 { + compatible = "regulator-fixed"; + regulator-name = "VDD_5V0"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + regulator-boot-on; + regulator-always-on; + vin-supply = <&vdd_sys_12v>; + }; + + pcie_vcc_3v3: regulator-pcie-vcc-3v3 { + compatible = "regulator-fixed"; + regulator-name = "NGFF_KEYM_VDD"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-boot-on; + regulator-always-on; + vin-supply = <&vdd_sys_12v>; + }; + + usb_vbus_5v: regulator-usb-vbus-5v { + compatible = "regulator-fixed"; + regulator-name = "VBUS_A_B"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + gpio = <&gpio K1_GPIO(124) GPIO_ACTIVE_HIGH>; + enable-active-high; + vin-supply = <®_vdd_5v0>; + }; + + reg_vdd_3v3: regulator-vdd-3v3 { + compatible = "regulator-fixed"; + regulator-name = "VDD_3V3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-boot-on; + regulator-always-on; + vin-supply = <&vdd_sys_12v>; + }; + + sd_vcc_3v3: regulator-sd-vcc-3v3 { + compatible = "regulator-fixed"; + regulator-name = "3.3VS_CARD"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpio = <&gpio K1_GPIO(127) GPIO_ACTIVE_HIGH>; + enable-active-high; + vin-supply = <®_vdd_3v3>; + }; +}; + +&combo_phy { + status = "okay"; +}; + +ð0 { + status = "okay"; +}; + +ð1 { + nvmem-cells = <&mac_address 1>; + nvmem-cell-names = "mac-address"; + phy-handle = <&rgmii1>; + phy-mode = "rgmii-id"; + pinctrl-names = "default"; + pinctrl-0 = <&gmac1_cfg>; + rx-internal-delay-ps = <0>; + tx-internal-delay-ps = <250>; + status = "okay"; + + mdio-bus { + #address-cells = <0x1>; + #size-cells = <0x0>; + + reset-gpios = <&gpio K1_GPIO(46) GPIO_ACTIVE_LOW>; + reset-delay-us = <10000>; + reset-post-delay-us = <100000>; + + rgmii1: phy@1 { + reg = <0x1>; + }; + }; +}; + +&i2c2 { + eeprom@54 { + compatible = "atmel,24c08"; + reg = <0x54>; + vcc-supply = <&buck3_1v8>; + pagesize = <16>; + size = <1024>; + }; +}; + +&pcie1_phy { + pinctrl-names = "default"; + pinctrl-0 = <&pcie1_3_cfg>; + status = "okay"; +}; + +&pcie1_port { + phys = <&pcie1_phy>; + vpcie3v3-supply = <&pcie_vcc_3v3>; +}; + +&pcie1 { + vpcie3v3-supply = <&pcie_vcc_3v3>; + status = "okay"; +}; + +&pcie2_phy { + pinctrl-names = "default"; + pinctrl-0 = <&pcie2_4_cfg>; + status = "okay"; +}; + +&pcie2_port { + phys = <&pcie2_phy>; + vpcie3v3-supply = <&pcie_vcc_3v3>; +}; + +&pcie2 { + vpcie3v3-supply = <&pcie_vcc_3v3>; + status = "okay"; +}; + +&qspi { + pinctrl-names = "default"; + pinctrl-0 = <&qspi_cfg>; + status = "okay"; +}; + +&sdhci0 { + pinctrl-names = "default", "uhs"; + pinctrl-0 = <&mmc1_cfg>; + pinctrl-1 = <&mmc1_uhs_cfg>; + bus-width = <4>; + cd-gpios = <&gpio K1_GPIO(80) (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; + no-mmc; + no-sdio; + disable-wp; + cap-sd-highspeed; + vmmc-supply = <&sd_vcc_3v3>; + vqmmc-supply = <&aldo1>; + sd-uhs-sdr25; + sd-uhs-sdr50; + sd-uhs-sdr104; + status = "okay"; +}; + +&uart0 { + pinctrl-names = "default"; + pinctrl-0 = <&uart0_2_cfg>; + status = "okay"; +}; + +&usbphy2 { + status = "okay"; +}; + +&usb_dwc3 { + dr_mode = "host"; + vbus-supply = <&usb_vbus_5v>; + status = "okay"; +}; + +&vddin_sys_5v { + vin-supply = <®_vdd_5v0>; +}; diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-cm6.dtsi b/arch/riscv/boot/dts/spacemit/k1-bananapi-cm6.dtsi new file mode 100644 index 00000000000000..9b91128edb343c --- /dev/null +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-cm6.dtsi @@ -0,0 +1,227 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/* + * Copyright (C) 2026 Junhui Liu + */ + +#include "k1.dtsi" +#include "k1-pinctrl.dtsi" + +/ { + model = "Banana Pi BPI-CM6 Module"; + compatible = "bananapi,bpi-cm6", "spacemit,k1"; + + aliases { + i2c2 = &i2c2; + i2c8 = &i2c8; + }; + + vddin_sys_5v: regulator-vddin-sys-5v { + compatible = "regulator-fixed"; + regulator-name = "VDDIN_SYS"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + regulator-boot-on; + regulator-always-on; + }; + + reg_vcc_4v: regulator-vcc-4v { + compatible = "regulator-fixed"; + regulator-name = "VCC4V0_SYS"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <4000000>; + regulator-boot-on; + regulator-always-on; + vin-supply = <&vddin_sys_5v>; + }; +}; + +&emmc { + bus-width = <8>; + mmc-hs400-1_8v; + mmc-hs400-enhanced-strobe; + non-removable; + no-sd; + no-sdio; + status = "okay"; +}; + +ð0 { + nvmem-cells = <&mac_address 0>; + nvmem-cell-names = "mac-address"; + phy-handle = <&rgmii0>; + phy-mode = "rgmii-id"; + pinctrl-names = "default"; + pinctrl-0 = <&gmac0_cfg>; + rx-internal-delay-ps = <0>; + tx-internal-delay-ps = <0>; + + mdio-bus { + #address-cells = <0x1>; + #size-cells = <0x0>; + + reset-gpios = <&gpio K1_GPIO(45) GPIO_ACTIVE_LOW>; + reset-delay-us = <10000>; + reset-post-delay-us = <100000>; + + rgmii0: phy@1 { + reg = <0x1>; + }; + }; +}; + +&pdma { + status = "okay"; +}; + +&i2c2 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c2_0_cfg>; + status = "okay"; + + eeprom@50 { + compatible = "atmel,24c02"; + reg = <0x50>; + vcc-supply = <&buck3_1v8>; + pagesize = <16>; + read-only; + size = <256>; + + nvmem-layout { + compatible = "onie,tlv-layout"; + + mac_address: mac-address { + #nvmem-cell-cells = <1>; + }; + + num-macs { + }; + + serial-number { + }; + }; + }; +}; + +&i2c8 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c8_cfg>; + status = "okay"; + + pmic@41 { + compatible = "spacemit,p1"; + reg = <0x41>; + interrupts = <64>; + vin1-supply = <®_vcc_4v>; + vin2-supply = <®_vcc_4v>; + vin3-supply = <®_vcc_4v>; + vin4-supply = <®_vcc_4v>; + vin5-supply = <®_vcc_4v>; + vin6-supply = <®_vcc_4v>; + aldoin-supply = <®_vcc_4v>; + dldoin1-supply = <&buck5>; + dldoin2-supply = <&buck5>; + + regulators { + buck1 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3450000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + buck2 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3450000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + buck3_1v8: buck3 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <1800000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + buck4 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3300000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + buck5: buck5 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3450000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + buck6 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3450000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + aldo1: aldo1 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + regulator-boot-on; + }; + + aldo2 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + + aldo3 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + + aldo4 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + + dldo1 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + regulator-boot-on; + }; + + dldo2 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + + dldo3 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + + dldo4 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + regulator-always-on; + }; + + dldo5 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + + dldo6 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + regulator-always-on; + }; + + dldo7 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + }; + }; +};