From f33ccc2316304f3a71e40e53f1568e75042b0a4b Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Sat, 6 Dec 2025 14:44:53 +0100 Subject: [PATCH 01/20] riscv: dts: spacemit: Enable i2c8 adapter for Milk-V Jupiter The adapter is used to access the SpacemiT P1 PMIC present in this board. Signed-off-by: Javier Martinez Canillas Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20251206134532.1741648-2-javierm@redhat.com Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts index 28afd39b28da..aa425f02c1f4 100644 --- a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts +++ b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts @@ -72,6 +72,12 @@ &pdma { status = "okay"; }; +&i2c8 { + pinctrl-0 = <&i2c8_cfg>; + pinctrl-names = "default"; + status = "okay"; +}; + &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_2_cfg>; From ae9d03f8aec76c1bff21083b67c211238d7c57b1 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Sat, 6 Dec 2025 14:44:54 +0100 Subject: [PATCH 02/20] riscv: dts: spacemit: Define fixed regulators for Milk-V Jupiter Define the DC power input and the 4v power as fixed regulator supplies. Signed-off-by: Javier Martinez Canillas Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20251206134532.1741648-3-javierm@redhat.com Signed-off-by: Yixun Lan --- .../boot/dts/spacemit/k1-milkv-jupiter.dts | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts index aa425f02c1f4..5babed4d7094 100644 --- a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts +++ b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts @@ -20,6 +20,25 @@ aliases { chosen { stdout-path = "serial0"; }; + + reg_dc_in: dc-in-12v { + compatible = "regulator-fixed"; + regulator-name = "dc_in_12v"; + regulator-min-microvolt = <12000000>; + regulator-max-microvolt = <12000000>; + regulator-boot-on; + regulator-always-on; + }; + + reg_vcc_4v: vcc-4v { + compatible = "regulator-fixed"; + regulator-name = "vcc_4v"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <4000000>; + regulator-boot-on; + regulator-always-on; + vin-supply = <®_dc_in>; + }; }; ð0 { From 7d307daa12b15a97269f577d5dcf50518758b568 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Sat, 6 Dec 2025 14:44:55 +0100 Subject: [PATCH 03/20] riscv: dts: spacemit: Define the P1 PMIC regulators for Milk-V Jupiter Define the SpacemiT P1 PMIC voltage regulators and their constraints. The power management hardware design on the Milk-V Jupiter is identical to the Banana Pi BPI-F3, so the DT Nodes were taken from k1-bananapi-f3.dts. Signed-off-by: Javier Martinez Canillas Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20251206134532.1741648-4-javierm@redhat.com Signed-off-by: Yixun Lan --- .../boot/dts/spacemit/k1-milkv-jupiter.dts | 110 ++++++++++++++++++ 1 file changed, 110 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts index 5babed4d7094..800a112d5d70 100644 --- a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts +++ b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts @@ -95,6 +95,116 @@ &i2c8 { pinctrl-0 = <&i2c8_cfg>; pinctrl-names = "default"; status = "okay"; + + pmic@41 { + compatible = "spacemit,p1"; + reg = <0x41>; + interrupts = <64>; + vin-supply = <®_vcc_4v>; + + 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 { + 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 { + 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>; + }; + }; + }; }; &uart0 { From 73a6c811fa0d07078c9e1eaecea76ce26fb5f10e Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Thu, 18 Dec 2025 09:12:30 -0600 Subject: [PATCH 04/20] riscv: dts: spacemit: Add a PCIe regulator Define a 3.3v fixed voltage regulator to be used by PCIe on the Banana Pi BPI-F3. On this platform, this regulator is always on. Signed-off-by: Alex Elder Reviewed-by: Yixun Lan Tested-by: Yixun Lan Link: https://lore.kernel.org/r/20251218151235.454997-5-elder@riscstar.com Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts index 02f218a16318..71f48454ba47 100644 --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts @@ -33,6 +33,14 @@ led1 { }; }; + pcie_vcc_3v3: pcie-vcc3v3 { + compatible = "regulator-fixed"; + regulator-name = "PCIE_VCC3V3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-always-on; + }; + reg_dc_in: dc-in-12v { compatible = "regulator-fixed"; regulator-name = "dc_in_12v"; From 0be016a4b5d1b927de04e2e7a0a2bce51aacbfff Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Thu, 18 Dec 2025 09:12:31 -0600 Subject: [PATCH 05/20] riscv: dts: spacemit: PCIe and PHY-related updates Define PCIe and PHY-related Device Tree nodes for the SpacemiT K1 SoC. Enable the combo PHY and the two PCIe-only PHYs on the Banana Pi BPI-F3 board. The combo PHY is used for USB on this board, and that will be enabled when USB 3 support is accepted. The combo PHY must perform a calibration step to determine configuration values used by the PCIe-only PHYs. As a result, it must be enabled if either of the other two PHYs is enabled. Signed-off-by: Alex Elder Reviewed-by: Yixun Lan Tested-by: Yixun Lan Link: https://lore.kernel.org/r/20251218151235.454997-6-elder@riscstar.com Signed-off-by: Yixun Lan --- .../boot/dts/spacemit/k1-bananapi-f3.dts | 36 ++++ arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 33 ++++ arch/riscv/boot/dts/spacemit/k1.dtsi | 176 ++++++++++++++++++ 3 files changed, 245 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts index 71f48454ba47..3f10efd925dc 100644 --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts @@ -61,6 +61,12 @@ reg_vcc_4v: vcc-4v { }; }; +&combo_phy { + pinctrl-names = "default"; + pinctrl-0 = <&pcie0_3_cfg>; + status = "okay"; +}; + &emmc { bus-width = <8>; mmc-hs400-1_8v; @@ -272,6 +278,36 @@ dldo7 { }; }; +&pcie1_phy { + pinctrl-names = "default"; + pinctrl-0 = <&pcie1_3_cfg>; + status = "okay"; +}; + +&pcie1_port { + phys = <&pcie1_phy>; +}; + +&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>; +}; + +&pcie2 { + vpcie3v3-supply = <&pcie_vcc_3v3>; + status = "okay"; +}; + &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_2_cfg>; diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi index e922e05ff856..b13dcb10f4d6 100644 --- a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi @@ -530,6 +530,39 @@ uart9-2-pins { }; }; + pcie0_3_cfg: pcie0-3-cfg { + pcie0-3-pins { + pinmux = , /* PERST# */ + , /* WAKE# */ + ; /* CLKREQ# */ + + bias-pull-up = <0>; + drive-strength = <21>; + }; + }; + + pcie1_3_cfg: pcie1-3-cfg { + pcie1-3-pins { + pinmux = , /* PERST# */ + , /* WAKE# */ + ; /* CLKREQ# */ + + bias-pull-up = <0>; + drive-strength = <21>; + }; + }; + + pcie2_4_cfg: pcie2-4-cfg { + pcie2-4-pins { + pinmux = , /* PERST# */ + , /* WAKE# */ + ; /* CLKREQ# */ + + bias-pull-up = <0>; + drive-strength = <21>; + }; + }; + pwm14_1_cfg: pwm14-1-cfg { pwm14-1-pins { pinmux = ; diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index 7818ca4979b6..86d1db14e2ee 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -4,6 +4,7 @@ */ #include +#include /dts-v1/; / { @@ -423,6 +424,52 @@ i2c5: i2c@d4013800 { status = "disabled"; }; + combo_phy: phy@c0b10000 { + compatible = "spacemit,k1-combo-phy"; + reg = <0x0 0xc0b10000 0x0 0x1000>; + clocks = <&vctcxo_24m>, + <&syscon_apmu CLK_PCIE0_DBI>, + <&syscon_apmu CLK_PCIE0_MASTER>, + <&syscon_apmu CLK_PCIE0_SLAVE>; + clock-names = "refclk", + "dbi", + "mstr", + "slv"; + resets = <&syscon_apmu RESET_PCIE0_GLOBAL>, + <&syscon_apmu RESET_PCIE0_DBI>, + <&syscon_apmu RESET_PCIE0_MASTER>, + <&syscon_apmu RESET_PCIE0_SLAVE>; + reset-names = "phy", + "dbi", + "mstr", + "slv"; + #phy-cells = <1>; + spacemit,apmu = <&syscon_apmu>; + status = "disabled"; + }; + + pcie1_phy: phy@c0c10000 { + compatible = "spacemit,k1-pcie-phy"; + reg = <0x0 0xc0c10000 0x0 0x1000>; + clocks = <&vctcxo_24m>; + clock-names = "refclk"; + resets = <&syscon_apmu RESET_PCIE1_GLOBAL>; + reset-names = "phy"; + #phy-cells = <0>; + status = "disabled"; + }; + + pcie2_phy: phy@c0d10000 { + compatible = "spacemit,k1-pcie-phy"; + reg = <0x0 0xc0d10000 0x0 0x1000>; + clocks = <&vctcxo_24m>; + clock-names = "refclk"; + resets = <&syscon_apmu RESET_PCIE2_GLOBAL>; + reset-names = "phy"; + #phy-cells = <0>; + status = "disabled"; + }; + syscon_apbc: system-controller@d4015000 { compatible = "spacemit,k1-syscon-apbc"; reg = <0x0 0xd4015000 0x0 0x1000>; @@ -969,6 +1016,135 @@ pcie-bus { #size-cells = <2>; dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>, <0x0 0xb8000000 0x1 0x38000000 0x3 0x48000000>; + pcie0: pcie@ca000000 { + device_type = "pci"; + compatible = "spacemit,k1-pcie"; + reg = <0x0 0xca000000 0x0 0x00001000>, + <0x0 0xca300000 0x0 0x0001ff24>, + <0x0 0x8f000000 0x0 0x00002000>, + <0x0 0xc0b20000 0x0 0x00001000>; + reg-names = "dbi", + "atu", + "config", + "link"; + #address-cells = <3>; + #size-cells = <2>; + ranges = <0x01000000 0x0 0x00000000 0x0 0x8f002000 0x0 0x00100000>, + <0x02000000 0x0 0x80000000 0x0 0x80000000 0x0 0x0f000000>; + interrupts = <141>; + interrupt-names = "msi"; + clocks = <&syscon_apmu CLK_PCIE0_DBI>, + <&syscon_apmu CLK_PCIE0_MASTER>, + <&syscon_apmu CLK_PCIE0_SLAVE>; + clock-names = "dbi", + "mstr", + "slv"; + resets = <&syscon_apmu RESET_PCIE0_DBI>, + <&syscon_apmu RESET_PCIE0_MASTER>, + <&syscon_apmu RESET_PCIE0_SLAVE>; + reset-names = "dbi", + "mstr", + "slv"; + spacemit,apmu = <&syscon_apmu 0x03cc>; + status = "disabled"; + + pcie0_port: pcie@0 { + device_type = "pci"; + compatible = "pciclass,0604"; + reg = <0x0 0x0 0x0 0x0 0x0>; + bus-range = <0x01 0xff>; + #address-cells = <3>; + #size-cells = <2>; + ranges; + }; + }; + + pcie1: pcie@ca400000 { + device_type = "pci"; + compatible = "spacemit,k1-pcie"; + reg = <0x0 0xca400000 0x0 0x00001000>, + <0x0 0xca700000 0x0 0x0001ff24>, + <0x0 0x9f000000 0x0 0x00002000>, + <0x0 0xc0c20000 0x0 0x00001000>; + reg-names = "dbi", + "atu", + "config", + "link"; + #address-cells = <3>; + #size-cells = <2>; + ranges = <0x01000000 0x0 0x00000000 0x0 0x9f002000 0x0 0x00100000>, + <0x02000000 0x0 0x90000000 0x0 0x90000000 0x0 0x0f000000>; + interrupts = <142>; + interrupt-names = "msi"; + clocks = <&syscon_apmu CLK_PCIE1_DBI>, + <&syscon_apmu CLK_PCIE1_MASTER>, + <&syscon_apmu CLK_PCIE1_SLAVE>; + clock-names = "dbi", + "mstr", + "slv"; + resets = <&syscon_apmu RESET_PCIE1_DBI>, + <&syscon_apmu RESET_PCIE1_MASTER>, + <&syscon_apmu RESET_PCIE1_SLAVE>; + reset-names = "dbi", + "mstr", + "slv"; + spacemit,apmu = <&syscon_apmu 0x3d4>; + status = "disabled"; + + pcie1_port: pcie@0 { + device_type = "pci"; + compatible = "pciclass,0604"; + reg = <0x0 0x0 0x0 0x0 0x0>; + bus-range = <0x01 0xff>; + #address-cells = <3>; + #size-cells = <2>; + ranges; + }; + }; + + pcie2: pcie@ca800000 { + device_type = "pci"; + compatible = "spacemit,k1-pcie"; + reg = <0x0 0xca800000 0x0 0x00001000>, + <0x0 0xcab00000 0x0 0x0001ff24>, + <0x0 0xb7000000 0x0 0x00002000>, + <0x0 0xc0d20000 0x0 0x00001000>; + reg-names = "dbi", + "atu", + "config", + "link"; + #address-cells = <3>; + #size-cells = <2>; + ranges = <0x01000000 0x0 0x00000000 0x0 0xb7002000 0x0 0x00100000>, + <0x42000000 0x0 0xa0000000 0x0 0xa0000000 0x0 0x10000000>, + <0x02000000 0x0 0xb0000000 0x0 0xb0000000 0x0 0x07000000>; + interrupts = <143>; + interrupt-names = "msi"; + clocks = <&syscon_apmu CLK_PCIE2_DBI>, + <&syscon_apmu CLK_PCIE2_MASTER>, + <&syscon_apmu CLK_PCIE2_SLAVE>; + clock-names = "dbi", + "mstr", + "slv"; + resets = <&syscon_apmu RESET_PCIE2_DBI>, + <&syscon_apmu RESET_PCIE2_MASTER>, + <&syscon_apmu RESET_PCIE2_SLAVE>; + reset-names = "dbi", + "mstr", + "slv"; + spacemit,apmu = <&syscon_apmu 0x3dc>; + status = "disabled"; + + pcie2_port: pcie@0 { + device_type = "pci"; + compatible = "pciclass,0604"; + reg = <0x0 0x0 0x0 0x0 0x0>; + bus-range = <0x01 0xff>; + #address-cells = <3>; + #size-cells = <2>; + ranges; + }; + }; }; storage-bus { From 7d6fe7e381d2912300df06e1a7e7a6f6a9269af0 Mon Sep 17 00:00:00 2001 From: Encrow Thorne Date: Tue, 30 Dec 2025 23:06:53 +0800 Subject: [PATCH 06/20] riscv: dts: spacemit: add reset property Add resets property to K1 I2C node. Signed-off-by: Encrow Thorne Link: https://lore.kernel.org/r/20251230150653.42097-3-jyc0019@gmail.com Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index 86d1db14e2ee..4c045da95d72 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -368,6 +368,7 @@ i2c0: i2c@d4010800 { <&syscon_apbc CLK_TWSI0_BUS>; clock-names = "func", "bus"; clock-frequency = <400000>; + resets = <&syscon_apbc RESET_TWSI0>; interrupts = <36>; status = "disabled"; }; @@ -381,6 +382,7 @@ i2c1: i2c@d4011000 { <&syscon_apbc CLK_TWSI1_BUS>; clock-names = "func", "bus"; clock-frequency = <400000>; + resets = <&syscon_apbc RESET_TWSI1>; interrupts = <37>; status = "disabled"; }; @@ -394,6 +396,7 @@ i2c2: i2c@d4012000 { <&syscon_apbc CLK_TWSI2_BUS>; clock-names = "func", "bus"; clock-frequency = <400000>; + resets = <&syscon_apbc RESET_TWSI2>; interrupts = <38>; status = "disabled"; }; @@ -407,6 +410,7 @@ i2c4: i2c@d4012800 { <&syscon_apbc CLK_TWSI4_BUS>; clock-names = "func", "bus"; clock-frequency = <400000>; + resets = <&syscon_apbc RESET_TWSI4>; interrupts = <40>; status = "disabled"; }; @@ -420,6 +424,7 @@ i2c5: i2c@d4013800 { <&syscon_apbc CLK_TWSI5_BUS>; clock-names = "func", "bus"; clock-frequency = <400000>; + resets = <&syscon_apbc RESET_TWSI5>; interrupts = <41>; status = "disabled"; }; @@ -490,6 +495,7 @@ i2c6: i2c@d4018800 { <&syscon_apbc CLK_TWSI6_BUS>; clock-names = "func", "bus"; clock-frequency = <400000>; + resets = <&syscon_apbc RESET_TWSI6>; interrupts = <70>; status = "disabled"; }; @@ -593,6 +599,7 @@ i2c7: i2c@d401d000 { <&syscon_apbc CLK_TWSI7_BUS>; clock-names = "func", "bus"; clock-frequency = <400000>; + resets = <&syscon_apbc RESET_TWSI7>; interrupts = <18>; status = "disabled"; }; @@ -606,6 +613,7 @@ i2c8: i2c@d401d800 { <&syscon_apbc CLK_TWSI8_BUS>; clock-names = "func", "bus"; clock-frequency = <400000>; + resets = <&syscon_apbc RESET_TWSI8>; interrupts = <19>; status = "disabled"; }; From 7689c2d1bb1f53b170af79007d0611b43f232f05 Mon Sep 17 00:00:00 2001 From: Yixun Lan Date: Tue, 23 Dec 2025 10:24:51 +0800 Subject: [PATCH 07/20] riscv: dts: spacemit: sdhci: add reset support Request two reset line explicitly for SDHCI controller. Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20251223-07-k1-sdhci-reset-v2-3-5b8248cfc522@gentoo.org Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1.dtsi | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index 4c045da95d72..1f7ed108da68 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -1168,6 +1168,9 @@ emmc: mmc@d4281000 { clocks = <&syscon_apmu CLK_SDH_AXI>, <&syscon_apmu CLK_SDH2>; clock-names = "core", "io"; + resets = <&syscon_apmu RESET_SDH_AXI>, + <&syscon_apmu RESET_SDH2>; + reset-names = "axi", "sdh"; interrupts = <101>; status = "disabled"; }; From 9d591fef025d5008f23ab339a10006b151150578 Mon Sep 17 00:00:00 2001 From: Ze Huang Date: Sun, 11 Jan 2026 14:41:02 +0800 Subject: [PATCH 08/20] riscv: dts: spacemit: Add USB2 PHY node for K1 K1's DWC3 USB 3.0 controller requires two separate PHYs to function: the USB 3.0 combophy (for SuperSpeed) and a USB 2.0 PHY (for High-Speed, Full-Speed, etc.). Add node for this second USB 2.0 PHY (usbphy2). Tested-by: Aurelien Jarno Signed-off-by: Ze Huang Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20260111-k1-usb3dts-v2-v3-1-f5ebd546e904@linux.dev Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index 1f7ed108da68..fdf7ebac0590 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -429,6 +429,14 @@ i2c5: i2c@d4013800 { status = "disabled"; }; + usbphy2: phy@c0a30000 { + compatible = "spacemit,k1-usb2-phy"; + reg = <0x0 0xc0a30000 0x0 0x200>; + clocks = <&syscon_apmu CLK_USB30>; + #phy-cells = <0>; + status = "disabled"; + }; + combo_phy: phy@c0b10000 { compatible = "spacemit,k1-combo-phy"; reg = <0x0 0xc0b10000 0x0 0x1000>; From 6e8dcd141833a23d7117fe16896f6d5dfdb2e112 Mon Sep 17 00:00:00 2001 From: Ze Huang Date: Sun, 11 Jan 2026 14:41:03 +0800 Subject: [PATCH 09/20] riscv: dts: spacemit: Add DWC3 USB 3.0 controller node for K1 Add node for the Synopsys DWC3 USB 3.0 host controller on the K1 SoC. The controller resides on the 'storage-bus' and uses its DMA translations. Tested-by: Aurelien Jarno Signed-off-by: Ze Huang Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20260111-k1-usb3dts-v2-v3-2-f5ebd546e904@linux.dev Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1.dtsi | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index fdf7ebac0590..75877434f9f7 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -1170,6 +1170,30 @@ storage-bus { #size-cells = <2>; dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>; + usb_dwc3: usb@c0a00000 { + compatible = "spacemit,k1-dwc3"; + reg = <0x0 0xc0a00000 0x0 0x10000>; + clocks = <&syscon_apmu CLK_USB30>; + clock-names = "usbdrd30"; + interrupts = <125>; + phys = <&usbphy2>, <&combo_phy PHY_TYPE_USB3>; + phy-names = "usb2-phy", "usb3-phy"; + phy_type = "utmi"; + resets = <&syscon_apmu RESET_USB30_AHB>, + <&syscon_apmu RESET_USB30_VCC>, + <&syscon_apmu RESET_USB30_PHY>; + reset-names = "ahb", "vcc", "phy"; + reset-delay = <2>; + snps,hsphy_interface = "utmi"; + snps,dis_enblslpm_quirk; + snps,dis-u2-freeclk-exists-quirk; + snps,dis-del-phy-power-chg-quirk; + snps,dis_u2_susphy_quirk; + snps,dis_u3_susphy_quirk; + snps,dis_rxdet_inp3_quirk; + status = "disabled"; + }; + emmc: mmc@d4281000 { compatible = "spacemit,k1-sdhci"; reg = <0x0 0xd4281000 0x0 0x200>; From c7e62c4eea026d42d192a0b86ce7313086ef2093 Mon Sep 17 00:00:00 2001 From: Ze Huang Date: Sun, 11 Jan 2026 14:41:04 +0800 Subject: [PATCH 10/20] riscv: dts: spacemit: Enable USB3.0 on BananaPi-F3 Enable the DWC3 USB 3.0 controller and its associated usbphy2 on the Banana Pi F3 board. The board utilizes a VLI VL817 hub, which requires two separate power supplies: one VBUS and one for hub itself. Add two GPIO-controlled fixed-regulators to manage this. Tested-by: Aurelien Jarno Signed-off-by: Ze Huang Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20260111-k1-usb3dts-v2-v3-3-f5ebd546e904@linux.dev Signed-off-by: Yixun Lan --- .../boot/dts/spacemit/k1-bananapi-f3.dts | 46 +++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts index 3f10efd925dc..5971605754b3 100644 --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts @@ -59,6 +59,25 @@ reg_vcc_4v: vcc-4v { regulator-always-on; vin-supply = <®_dc_in>; }; + + usb3-vbus-5v { + compatible = "regulator-fixed"; + regulator-name = "USB30_VBUS"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + regulator-always-on; + gpio = <&gpio K1_GPIO(97) GPIO_ACTIVE_HIGH>; + enable-active-high; + }; + + usb3_hub_5v: usb3-hub-5v { + compatible = "regulator-fixed"; + regulator-name = "USB30_HUB"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + gpio = <&gpio K1_GPIO(123) GPIO_ACTIVE_HIGH>; + enable-active-high; + }; }; &combo_phy { @@ -313,3 +332,30 @@ &uart0 { pinctrl-0 = <&uart0_2_cfg>; status = "okay"; }; + +&usbphy2 { + status = "okay"; +}; + +&usb_dwc3 { + dr_mode = "host"; + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + hub_2_0: hub@1 { + compatible = "usb2109,2817"; + reg = <0x1>; + vdd-supply = <&usb3_hub_5v>; + peer-hub = <&hub_3_0>; + reset-gpios = <&gpio K1_GPIO(124) GPIO_ACTIVE_LOW>; + }; + + hub_3_0: hub@2 { + compatible = "usb2109,817"; + reg = <0x2>; + vdd-supply = <&usb3_hub_5v>; + peer-hub = <&hub_2_0>; + reset-gpios = <&gpio K1_GPIO(124) GPIO_ACTIVE_LOW>; + }; +}; From 4168630825f95bf57729dad46d2a097096e73e4d Mon Sep 17 00:00:00 2001 From: Guodong Xu Date: Thu, 15 Jan 2026 07:19:00 +0800 Subject: [PATCH 11/20] riscv: dts: spacemit: k1: Add "b" ISA extension "b" is ratified (Apr/2024) much later than its components zba/zbb/zbs (Jun/2021). With "b" added into riscv/extensions.yaml, a dependency checking rule is now enforced, which requires that when zba, zbb, and zbs are all specified, "b" must be added as well. Failing to do this will cause dtbs_check schema check warnings. According to uabi.rst, as a single-letter extension, "b" should be added after "c" in canonical order. Update k1.dtsi to conform to this rule. Signed-off-by: Guodong Xu Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20260115-adding-b-dtsi-v2-4-254dd61cf947@riscstar.com Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1.dtsi | 32 ++++++++++++++-------------- 1 file changed, 16 insertions(+), 16 deletions(-) diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index 75877434f9f7..cf5802687835 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -54,9 +54,9 @@ cpu_0: cpu@0 { compatible = "spacemit,x60", "riscv"; device_type = "cpu"; reg = <0>; - riscv,isa = "rv64imafdcv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; + riscv,isa = "rv64imafdcbv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; riscv,isa-base = "rv64i"; - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "v", "zicbom", + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "zicbom", "zicbop", "zicboz", "zicntr", "zicond", "zicsr", "zifencei", "zihintpause", "zihpm", "zfh", "zba", "zbb", "zbc", "zbs", "zkt", "zvfh", "zvkt", @@ -84,9 +84,9 @@ cpu_1: cpu@1 { compatible = "spacemit,x60", "riscv"; device_type = "cpu"; reg = <1>; - riscv,isa = "rv64imafdcv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; + riscv,isa = "rv64imafdcbv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; riscv,isa-base = "rv64i"; - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "v", "zicbom", + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "zicbom", "zicbop", "zicboz", "zicntr", "zicond", "zicsr", "zifencei", "zihintpause", "zihpm", "zfh", "zba", "zbb", "zbc", "zbs", "zkt", "zvfh", "zvkt", @@ -114,9 +114,9 @@ cpu_2: cpu@2 { compatible = "spacemit,x60", "riscv"; device_type = "cpu"; reg = <2>; - riscv,isa = "rv64imafdcv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; + riscv,isa = "rv64imafdcbv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; riscv,isa-base = "rv64i"; - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "v", "zicbom", + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "zicbom", "zicbop", "zicboz", "zicntr", "zicond", "zicsr", "zifencei", "zihintpause", "zihpm", "zfh", "zba", "zbb", "zbc", "zbs", "zkt", "zvfh", "zvkt", @@ -144,9 +144,9 @@ cpu_3: cpu@3 { compatible = "spacemit,x60", "riscv"; device_type = "cpu"; reg = <3>; - riscv,isa = "rv64imafdcv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; + riscv,isa = "rv64imafdcbv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; riscv,isa-base = "rv64i"; - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "v", "zicbom", + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "zicbom", "zicbop", "zicboz", "zicntr", "zicond", "zicsr", "zifencei", "zihintpause", "zihpm", "zfh", "zba", "zbb", "zbc", "zbs", "zkt", "zvfh", "zvkt", @@ -174,9 +174,9 @@ cpu_4: cpu@4 { compatible = "spacemit,x60", "riscv"; device_type = "cpu"; reg = <4>; - riscv,isa = "rv64imafdcv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; + riscv,isa = "rv64imafdcbv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; riscv,isa-base = "rv64i"; - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "v", "zicbom", + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "zicbom", "zicbop", "zicboz", "zicntr", "zicond", "zicsr", "zifencei", "zihintpause", "zihpm", "zfh", "zba", "zbb", "zbc", "zbs", "zkt", "zvfh", "zvkt", @@ -204,9 +204,9 @@ cpu_5: cpu@5 { compatible = "spacemit,x60", "riscv"; device_type = "cpu"; reg = <5>; - riscv,isa = "rv64imafdcv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; + riscv,isa = "rv64imafdcbv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; riscv,isa-base = "rv64i"; - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "v", "zicbom", + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "zicbom", "zicbop", "zicboz", "zicntr", "zicond", "zicsr", "zifencei", "zihintpause", "zihpm", "zfh", "zba", "zbb", "zbc", "zbs", "zkt", "zvfh", "zvkt", @@ -234,9 +234,9 @@ cpu_6: cpu@6 { compatible = "spacemit,x60", "riscv"; device_type = "cpu"; reg = <6>; - riscv,isa = "rv64imafdcv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; + riscv,isa = "rv64imafdcbv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; riscv,isa-base = "rv64i"; - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "v", "zicbom", + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "zicbom", "zicbop", "zicboz", "zicntr", "zicond", "zicsr", "zifencei", "zihintpause", "zihpm", "zfh", "zba", "zbb", "zbc", "zbs", "zkt", "zvfh", "zvkt", @@ -264,9 +264,9 @@ cpu_7: cpu@7 { compatible = "spacemit,x60", "riscv"; device_type = "cpu"; reg = <7>; - riscv,isa = "rv64imafdcv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; + riscv,isa = "rv64imafdcbv_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zkt_zvfh_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"; riscv,isa-base = "rv64i"; - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "v", "zicbom", + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "zicbom", "zicbop", "zicboz", "zicntr", "zicond", "zicsr", "zifencei", "zihintpause", "zihpm", "zfh", "zba", "zbb", "zbc", "zbs", "zkt", "zvfh", "zvkt", From 81a52103b90f5cddc41c34f633c014a956236abc Mon Sep 17 00:00:00 2001 From: Guodong Xu Date: Thu, 15 Jan 2026 14:51:40 +0800 Subject: [PATCH 12/20] dt-bindings: riscv: add SpacemiT X100 CPU compatible Add compatible string for the SpacemiT X100 core. [1] The X100 is a 64-bit RVA23-compliant RISC-V core from SpacemiT. X100 supports the RISC-V vector and hypervisor extensions and all mandatory extersions as required by the RVA23U64 and RVA23S64 profiles, per the definition in 'RVA23 Profile, Version 1.0'. [2] From a microarchieture viewpoint, the X100 features a 4-issue out-of-order pipeline. X100 is used in SpacemiT K3 SoC. Acked-by: Paul Walmsley Acked-by: Krzysztof Kozlowski Link: https://www.spacemit.com/en/spacemit-x100-core/ [1] Link: https://docs.riscv.org/reference/profiles/rva23/_attachments/rva23-profile.pdf [2] Reviewed-by: Yixun Lan Reviewed-by: Heinrich Schuchardt Signed-off-by: Guodong Xu Link: https://lore.kernel.org/r/20260115-k3-basic-dt-v5-1-6990ac9f4308@riscstar.com Signed-off-by: Yixun Lan --- Documentation/devicetree/bindings/riscv/cpus.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml index d733c0bd534f..5feeb2203050 100644 --- a/Documentation/devicetree/bindings/riscv/cpus.yaml +++ b/Documentation/devicetree/bindings/riscv/cpus.yaml @@ -61,6 +61,7 @@ properties: - sifive,u7 - sifive,u74 - sifive,u74-mc + - spacemit,x100 - spacemit,x60 - thead,c906 - thead,c908 From 6cdeb30db4d8faf9f1fa7ab863d91d36a584716d Mon Sep 17 00:00:00 2001 From: Guodong Xu Date: Thu, 15 Jan 2026 14:51:41 +0800 Subject: [PATCH 13/20] dt-bindings: timer: add SpacemiT K3 CLINT Add compatible string for SpacemiT K3 CLINT. Acked-by: Conor Dooley Signed-off-by: Guodong Xu Link: https://lore.kernel.org/r/20260115-k3-basic-dt-v5-2-6990ac9f4308@riscstar.com Signed-off-by: Yixun Lan --- Documentation/devicetree/bindings/timer/sifive,clint.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/timer/sifive,clint.yaml b/Documentation/devicetree/bindings/timer/sifive,clint.yaml index 0d3b8dc362ba..3bab40500df9 100644 --- a/Documentation/devicetree/bindings/timer/sifive,clint.yaml +++ b/Documentation/devicetree/bindings/timer/sifive,clint.yaml @@ -33,6 +33,7 @@ properties: - eswin,eic7700-clint # ESWIN EIC7700 - sifive,fu540-c000-clint # SiFive FU540 - spacemit,k1-clint # SpacemiT K1 + - spacemit,k3-clint # SpacemiT K3 - starfive,jh7100-clint # StarFive JH7100 - starfive,jh7110-clint # StarFive JH7110 - starfive,jh8100-clint # StarFive JH8100 From 60490ca6d54b6f0a00223a4fe59bb180bb1538bf Mon Sep 17 00:00:00 2001 From: Guodong Xu Date: Thu, 15 Jan 2026 14:51:42 +0800 Subject: [PATCH 14/20] dt-bindings: interrupt-controller: add SpacemiT K3 APLIC Add compatible string for SpacemiT K3 APLIC. Acked-by: Conor Dooley Signed-off-by: Guodong Xu Link: https://lore.kernel.org/r/20260115-k3-basic-dt-v5-3-6990ac9f4308@riscstar.com Signed-off-by: Yixun Lan --- .../devicetree/bindings/interrupt-controller/riscv,aplic.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/interrupt-controller/riscv,aplic.yaml b/Documentation/devicetree/bindings/interrupt-controller/riscv,aplic.yaml index bef00521d5da..0718071444d2 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/riscv,aplic.yaml +++ b/Documentation/devicetree/bindings/interrupt-controller/riscv,aplic.yaml @@ -28,6 +28,7 @@ properties: items: - enum: - qemu,aplic + - spacemit,k3-aplic - const: riscv,aplic reg: From a716729a3ce1055efab477030235777d2be0852b Mon Sep 17 00:00:00 2001 From: Guodong Xu Date: Thu, 15 Jan 2026 14:51:43 +0800 Subject: [PATCH 15/20] dt-bindings: interrupt-controller: add SpacemiT K3 IMSIC Add compatible string for SpacemiT K3 IMSIC. Acked-by: Krzysztof Kozlowski Signed-off-by: Guodong Xu Link: https://lore.kernel.org/r/20260115-k3-basic-dt-v5-4-6990ac9f4308@riscstar.com Signed-off-by: Yixun Lan --- .../devicetree/bindings/interrupt-controller/riscv,imsics.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/interrupt-controller/riscv,imsics.yaml b/Documentation/devicetree/bindings/interrupt-controller/riscv,imsics.yaml index c23b5c09fdb9..feec122bddde 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/riscv,imsics.yaml +++ b/Documentation/devicetree/bindings/interrupt-controller/riscv,imsics.yaml @@ -48,6 +48,7 @@ properties: items: - enum: - qemu,imsics + - spacemit,k3-imsics - const: riscv,imsics reg: From 7cb5fafc180f6e188af7943d6b162051f22490fc Mon Sep 17 00:00:00 2001 From: Guodong Xu Date: Thu, 15 Jan 2026 14:51:44 +0800 Subject: [PATCH 16/20] dt-bindings: riscv: spacemit: add K3 and Pico-ITX board bindings Add DT binding documentation for the SpacemiT K3 SoC and the board Pico-ITX which is a 2.5-inch single-board computer. Acked-by: Conor Dooley Reviewed-by: Yixun Lan Signed-off-by: Guodong Xu Link: https://lore.kernel.org/r/20260115-k3-basic-dt-v5-5-6990ac9f4308@riscstar.com Signed-off-by: Yixun Lan --- 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 9c49482002f7..b958b94a924d 100644 --- a/Documentation/devicetree/bindings/riscv/spacemit.yaml +++ b/Documentation/devicetree/bindings/riscv/spacemit.yaml @@ -7,6 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml# title: SpacemiT SoC-based boards maintainers: + - Guodong Xu - Yangyu Chen - Yixun Lan @@ -26,6 +27,10 @@ properties: - xunlong,orangepi-r2s - xunlong,orangepi-rv2 - const: spacemit,k1 + - items: + - enum: + - spacemit,k3-pico-itx + - const: spacemit,k3 additionalProperties: true From 56f37e391a626f964615ee5939710eff212b621f Mon Sep 17 00:00:00 2001 From: Guodong Xu Date: Thu, 15 Jan 2026 14:51:45 +0800 Subject: [PATCH 17/20] riscv: dts: spacemit: add initial support for K3 SoC SpacemiT K3 is equipped with 8 X100 cores, which are RVA23 compliant. Add nodes of uarts, timer and interrupt-controllers. Also add M-mode APLIC (maplic) and IMSIC (mimsic) nodes to represent the hardware topology and ready for potential firmware usage. Signed-off-by: Guodong Xu Link: https://lore.kernel.org/r/20260115-k3-basic-dt-v5-6-6990ac9f4308@riscstar.com Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k3.dtsi | 578 +++++++++++++++++++++++++++ 1 file changed, 578 insertions(+) create mode 100644 arch/riscv/boot/dts/spacemit/k3.dtsi diff --git a/arch/riscv/boot/dts/spacemit/k3.dtsi b/arch/riscv/boot/dts/spacemit/k3.dtsi new file mode 100644 index 000000000000..b69cf81b5d55 --- /dev/null +++ b/arch/riscv/boot/dts/spacemit/k3.dtsi @@ -0,0 +1,578 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MIT) +/* + * Copyright (c) 2026 SpacemiT (Hangzhou) Technology Co. Ltd + * Copyright (c) 2026 Guodong Xu + */ + +#include + +/dts-v1/; + +/ { + #address-cells = <2>; + #size-cells = <2>; + model = "SpacemiT K3"; + compatible = "spacemit,k3"; + + cpus: cpus { + #address-cells = <1>; + #size-cells = <0>; + timebase-frequency = <24000000>; + + cpu_0: cpu@0 { + compatible = "spacemit,x100", "riscv"; + device_type = "cpu"; + reg = <0>; + riscv,isa-base = "rv64i"; + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "h", + "sha", "shcounterenw", "shgatpa", "shtvala", + "shvsatpa", "shvstvala", "shvstvecd", "smaia", + "smstateen", "ssaia", "ssccptr", "sscofpmf", + "sscounterenw", "ssnpm", "ssstateen", "sstc", + "sstvala", "sstvecd", "ssu64xl", "svade", + "svinval", "svnapot", "svpbmt", "za64rs", + "zawrs", "zba", "zbb", "zbc", "zbs", "zca", + "zcb", "zcd", "zcmop", "zfa", "zfbfmin", + "zfh", "zfhmin", "zicbom", "zicbop", "zicboz", + "ziccamoa", "ziccif", "zicclsm", "zicntr", + "zicond", "zicsr", "zifencei", "zihintntl", + "zihintpause", "zihpm", "zimop", "zkt", "zvbb", + "zvbc", "zvfbfmin", "zvfbfwma", "zvfh", + "zvfhmin", "zvkb", "zvkg", "zvkn", "zvknc", + "zvkned", "zvkng", "zvknha", "zvknhb", "zvks", + "zvksc", "zvksed", "zvksg", "zvksh", "zvkt"; + riscv,cbom-block-size = <64>; + riscv,cbop-block-size = <64>; + riscv,cboz-block-size = <64>; + i-cache-block-size = <64>; + i-cache-size = <65536>; + i-cache-sets = <256>; + d-cache-block-size = <64>; + d-cache-size = <65536>; + d-cache-sets = <256>; + next-level-cache = <&l2_cache0>; + mmu-type = "riscv,sv39"; + + cpu0_intc: interrupt-controller { + compatible = "riscv,cpu-intc"; + #interrupt-cells = <1>; + interrupt-controller; + }; + }; + + cpu_1: cpu@1 { + compatible = "spacemit,x100", "riscv"; + device_type = "cpu"; + reg = <1>; + riscv,isa-base = "rv64i"; + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "h", + "sha", "shcounterenw", "shgatpa", "shtvala", + "shvsatpa", "shvstvala", "shvstvecd", "smaia", + "smstateen", "ssaia", "ssccptr", "sscofpmf", + "sscounterenw", "ssnpm", "ssstateen", "sstc", + "sstvala", "sstvecd", "ssu64xl", "svade", + "svinval", "svnapot", "svpbmt", "za64rs", + "zawrs", "zba", "zbb", "zbc", "zbs", "zca", + "zcb", "zcd", "zcmop", "zfa", "zfbfmin", + "zfh", "zfhmin", "zicbom", "zicbop", "zicboz", + "ziccamoa", "ziccif", "zicclsm", "zicntr", + "zicond", "zicsr", "zifencei", "zihintntl", + "zihintpause", "zihpm", "zimop", "zkt", "zvbb", + "zvbc", "zvfbfmin", "zvfbfwma", "zvfh", + "zvfhmin", "zvkb", "zvkg", "zvkn", "zvknc", + "zvkned", "zvkng", "zvknha", "zvknhb", "zvks", + "zvksc", "zvksed", "zvksg", "zvksh", "zvkt"; + riscv,cbom-block-size = <64>; + riscv,cbop-block-size = <64>; + riscv,cboz-block-size = <64>; + i-cache-block-size = <64>; + i-cache-size = <65536>; + i-cache-sets = <256>; + d-cache-block-size = <64>; + d-cache-size = <65536>; + d-cache-sets = <256>; + next-level-cache = <&l2_cache0>; + mmu-type = "riscv,sv39"; + + cpu1_intc: interrupt-controller { + compatible = "riscv,cpu-intc"; + #interrupt-cells = <1>; + interrupt-controller; + }; + }; + + cpu_2: cpu@2 { + compatible = "spacemit,x100", "riscv"; + device_type = "cpu"; + reg = <2>; + riscv,isa-base = "rv64i"; + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "h", + "sha", "shcounterenw", "shgatpa", "shtvala", + "shvsatpa", "shvstvala", "shvstvecd", "smaia", + "smstateen", "ssaia", "ssccptr", "sscofpmf", + "sscounterenw", "ssnpm", "ssstateen", "sstc", + "sstvala", "sstvecd", "ssu64xl", "svade", + "svinval", "svnapot", "svpbmt", "za64rs", + "zawrs", "zba", "zbb", "zbc", "zbs", "zca", + "zcb", "zcd", "zcmop", "zfa", "zfbfmin", + "zfh", "zfhmin", "zicbom", "zicbop", "zicboz", + "ziccamoa", "ziccif", "zicclsm", "zicntr", + "zicond", "zicsr", "zifencei", "zihintntl", + "zihintpause", "zihpm", "zimop", "zkt", "zvbb", + "zvbc", "zvfbfmin", "zvfbfwma", "zvfh", + "zvfhmin", "zvkb", "zvkg", "zvkn", "zvknc", + "zvkned", "zvkng", "zvknha", "zvknhb", "zvks", + "zvksc", "zvksed", "zvksg", "zvksh", "zvkt"; + riscv,cbom-block-size = <64>; + riscv,cbop-block-size = <64>; + riscv,cboz-block-size = <64>; + i-cache-block-size = <64>; + i-cache-size = <65536>; + i-cache-sets = <256>; + d-cache-block-size = <64>; + d-cache-size = <65536>; + d-cache-sets = <256>; + next-level-cache = <&l2_cache0>; + mmu-type = "riscv,sv39"; + + cpu2_intc: interrupt-controller { + compatible = "riscv,cpu-intc"; + #interrupt-cells = <1>; + interrupt-controller; + }; + }; + + cpu_3: cpu@3 { + compatible = "spacemit,x100", "riscv"; + device_type = "cpu"; + reg = <3>; + riscv,isa-base = "rv64i"; + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "h", + "sha", "shcounterenw", "shgatpa", "shtvala", + "shvsatpa", "shvstvala", "shvstvecd", "smaia", + "smstateen", "ssaia", "ssccptr", "sscofpmf", + "sscounterenw", "ssnpm", "ssstateen", "sstc", + "sstvala", "sstvecd", "ssu64xl", "svade", + "svinval", "svnapot", "svpbmt", "za64rs", + "zawrs", "zba", "zbb", "zbc", "zbs", "zca", + "zcb", "zcd", "zcmop", "zfa", "zfbfmin", + "zfh", "zfhmin", "zicbom", "zicbop", "zicboz", + "ziccamoa", "ziccif", "zicclsm", "zicntr", + "zicond", "zicsr", "zifencei", "zihintntl", + "zihintpause", "zihpm", "zimop", "zkt", "zvbb", + "zvbc", "zvfbfmin", "zvfbfwma", "zvfh", + "zvfhmin", "zvkb", "zvkg", "zvkn", "zvknc", + "zvkned", "zvkng", "zvknha", "zvknhb", "zvks", + "zvksc", "zvksed", "zvksg", "zvksh", "zvkt"; + riscv,cbom-block-size = <64>; + riscv,cbop-block-size = <64>; + riscv,cboz-block-size = <64>; + i-cache-block-size = <64>; + i-cache-size = <65536>; + i-cache-sets = <256>; + d-cache-block-size = <64>; + d-cache-size = <65536>; + d-cache-sets = <256>; + next-level-cache = <&l2_cache0>; + mmu-type = "riscv,sv39"; + + cpu3_intc: interrupt-controller { + compatible = "riscv,cpu-intc"; + #interrupt-cells = <1>; + interrupt-controller; + }; + }; + + cpu_4: cpu@4 { + compatible = "spacemit,x100", "riscv"; + device_type = "cpu"; + reg = <4>; + riscv,isa-base = "rv64i"; + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "h", + "sha", "shcounterenw", "shgatpa", "shtvala", + "shvsatpa", "shvstvala", "shvstvecd", "smaia", + "smstateen", "ssaia", "ssccptr", "sscofpmf", + "sscounterenw", "ssnpm", "ssstateen", "sstc", + "sstvala", "sstvecd", "ssu64xl", "svade", + "svinval", "svnapot", "svpbmt", "za64rs", + "zawrs", "zba", "zbb", "zbc", "zbs", "zca", + "zcb", "zcd", "zcmop", "zfa", "zfbfmin", + "zfh", "zfhmin", "zicbom", "zicbop", "zicboz", + "ziccamoa", "ziccif", "zicclsm", "zicntr", + "zicond", "zicsr", "zifencei", "zihintntl", + "zihintpause", "zihpm", "zimop", "zkt", "zvbb", + "zvbc", "zvfbfmin", "zvfbfwma", "zvfh", + "zvfhmin", "zvkb", "zvkg", "zvkn", "zvknc", + "zvkned", "zvkng", "zvknha", "zvknhb", "zvks", + "zvksc", "zvksed", "zvksg", "zvksh", "zvkt"; + riscv,cbom-block-size = <64>; + riscv,cbop-block-size = <64>; + riscv,cboz-block-size = <64>; + i-cache-block-size = <64>; + i-cache-size = <65536>; + i-cache-sets = <256>; + d-cache-block-size = <64>; + d-cache-size = <65536>; + d-cache-sets = <256>; + next-level-cache = <&l2_cache1>; + mmu-type = "riscv,sv39"; + + cpu4_intc: interrupt-controller { + compatible = "riscv,cpu-intc"; + #interrupt-cells = <1>; + interrupt-controller; + }; + }; + + cpu_5: cpu@5 { + compatible = "spacemit,x100", "riscv"; + device_type = "cpu"; + reg = <5>; + riscv,isa-base = "rv64i"; + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "h", + "sha", "shcounterenw", "shgatpa", "shtvala", + "shvsatpa", "shvstvala", "shvstvecd", "smaia", + "smstateen", "ssaia", "ssccptr", "sscofpmf", + "sscounterenw", "ssnpm", "ssstateen", "sstc", + "sstvala", "sstvecd", "ssu64xl", "svade", + "svinval", "svnapot", "svpbmt", "za64rs", + "zawrs", "zba", "zbb", "zbc", "zbs", "zca", + "zcb", "zcd", "zcmop", "zfa", "zfbfmin", + "zfh", "zfhmin", "zicbom", "zicbop", "zicboz", + "ziccamoa", "ziccif", "zicclsm", "zicntr", + "zicond", "zicsr", "zifencei", "zihintntl", + "zihintpause", "zihpm", "zimop", "zkt", "zvbb", + "zvbc", "zvfbfmin", "zvfbfwma", "zvfh", + "zvfhmin", "zvkb", "zvkg", "zvkn", "zvknc", + "zvkned", "zvkng", "zvknha", "zvknhb", "zvks", + "zvksc", "zvksed", "zvksg", "zvksh", "zvkt"; + riscv,cbom-block-size = <64>; + riscv,cbop-block-size = <64>; + riscv,cboz-block-size = <64>; + i-cache-block-size = <64>; + i-cache-size = <65536>; + i-cache-sets = <256>; + d-cache-block-size = <64>; + d-cache-size = <65536>; + d-cache-sets = <256>; + next-level-cache = <&l2_cache1>; + mmu-type = "riscv,sv39"; + + cpu5_intc: interrupt-controller { + compatible = "riscv,cpu-intc"; + #interrupt-cells = <1>; + interrupt-controller; + }; + }; + + cpu_6: cpu@6 { + compatible = "spacemit,x100", "riscv"; + device_type = "cpu"; + reg = <6>; + riscv,isa-base = "rv64i"; + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "h", + "sha", "shcounterenw", "shgatpa", "shtvala", + "shvsatpa", "shvstvala", "shvstvecd", "smaia", + "smstateen", "ssaia", "ssccptr", "sscofpmf", + "sscounterenw", "ssnpm", "ssstateen", "sstc", + "sstvala", "sstvecd", "ssu64xl", "svade", + "svinval", "svnapot", "svpbmt", "za64rs", + "zawrs", "zba", "zbb", "zbc", "zbs", "zca", + "zcb", "zcd", "zcmop", "zfa", "zfbfmin", + "zfh", "zfhmin", "zicbom", "zicbop", "zicboz", + "ziccamoa", "ziccif", "zicclsm", "zicntr", + "zicond", "zicsr", "zifencei", "zihintntl", + "zihintpause", "zihpm", "zimop", "zkt", "zvbb", + "zvbc", "zvfbfmin", "zvfbfwma", "zvfh", + "zvfhmin", "zvkb", "zvkg", "zvkn", "zvknc", + "zvkned", "zvkng", "zvknha", "zvknhb", "zvks", + "zvksc", "zvksed", "zvksg", "zvksh", "zvkt"; + riscv,cbom-block-size = <64>; + riscv,cbop-block-size = <64>; + riscv,cboz-block-size = <64>; + i-cache-block-size = <64>; + i-cache-size = <65536>; + i-cache-sets = <256>; + d-cache-block-size = <64>; + d-cache-size = <65536>; + d-cache-sets = <256>; + next-level-cache = <&l2_cache1>; + mmu-type = "riscv,sv39"; + + cpu6_intc: interrupt-controller { + compatible = "riscv,cpu-intc"; + #interrupt-cells = <1>; + interrupt-controller; + }; + }; + + cpu_7: cpu@7 { + compatible = "spacemit,x100", "riscv"; + device_type = "cpu"; + reg = <7>; + riscv,isa-base = "rv64i"; + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "b", "v", "h", + "sha", "shcounterenw", "shgatpa", "shtvala", + "shvsatpa", "shvstvala", "shvstvecd", "smaia", + "smstateen", "ssaia", "ssccptr", "sscofpmf", + "sscounterenw", "ssnpm", "ssstateen", "sstc", + "sstvala", "sstvecd", "ssu64xl", "svade", + "svinval", "svnapot", "svpbmt", "za64rs", + "zawrs", "zba", "zbb", "zbc", "zbs", "zca", + "zcb", "zcd", "zcmop", "zfa", "zfbfmin", + "zfh", "zfhmin", "zicbom", "zicbop", "zicboz", + "ziccamoa", "ziccif", "zicclsm", "zicntr", + "zicond", "zicsr", "zifencei", "zihintntl", + "zihintpause", "zihpm", "zimop", "zkt", "zvbb", + "zvbc", "zvfbfmin", "zvfbfwma", "zvfh", + "zvfhmin", "zvkb", "zvkg", "zvkn", "zvknc", + "zvkned", "zvkng", "zvknha", "zvknhb", "zvks", + "zvksc", "zvksed", "zvksg", "zvksh", "zvkt"; + riscv,cbom-block-size = <64>; + riscv,cbop-block-size = <64>; + riscv,cboz-block-size = <64>; + i-cache-block-size = <64>; + i-cache-size = <65536>; + i-cache-sets = <256>; + d-cache-block-size = <64>; + d-cache-size = <65536>; + d-cache-sets = <256>; + next-level-cache = <&l2_cache1>; + mmu-type = "riscv,sv39"; + + cpu7_intc: interrupt-controller { + compatible = "riscv,cpu-intc"; + #interrupt-cells = <1>; + interrupt-controller; + }; + }; + + l2_cache0: cache-controller-0 { + compatible = "cache"; + cache-block-size = <64>; + cache-level = <2>; + cache-size = <4194304>; + cache-sets = <4096>; + cache-unified; + }; + + l2_cache1: cache-controller-1 { + compatible = "cache"; + cache-block-size = <64>; + cache-level = <2>; + cache-size = <4194304>; + cache-sets = <4096>; + cache-unified; + }; + + cpu-map { + cluster0 { + core0 { + cpu = <&cpu_0>; + }; + core1 { + cpu = <&cpu_1>; + }; + core2 { + cpu = <&cpu_2>; + }; + core3 { + cpu = <&cpu_3>; + }; + }; + + cluster1 { + core0 { + cpu = <&cpu_4>; + }; + core1 { + cpu = <&cpu_5>; + }; + core2 { + cpu = <&cpu_6>; + }; + core3 { + cpu = <&cpu_7>; + }; + }; + }; + }; + + soc: soc { + compatible = "simple-bus"; + interrupt-parent = <&saplic>; + #address-cells = <2>; + #size-cells = <2>; + dma-noncoherent; + ranges; + + uart0: serial@d4017000 { + compatible = "spacemit,k3-uart", "intel,xscale-uart"; + reg = <0x0 0xd4017000 0x0 0x100>; + reg-shift = <2>; + reg-io-width = <4>; + clock-frequency = <14700000>; + interrupts = <42 IRQ_TYPE_LEVEL_HIGH>; + status = "disabled"; + }; + + uart2: serial@d4017100 { + compatible = "spacemit,k3-uart", "intel,xscale-uart"; + reg = <0x0 0xd4017100 0x0 0x100>; + reg-shift = <2>; + reg-io-width = <4>; + clock-frequency = <14700000>; + interrupts = <44 IRQ_TYPE_LEVEL_HIGH>; + status = "disabled"; + }; + + uart3: serial@d4017200 { + compatible = "spacemit,k3-uart", "intel,xscale-uart"; + reg = <0x0 0xd4017200 0x0 0x100>; + reg-shift = <2>; + reg-io-width = <4>; + clock-frequency = <14700000>; + interrupts = <45 IRQ_TYPE_LEVEL_HIGH>; + status = "disabled"; + }; + + uart4: serial@d4017300 { + compatible = "spacemit,k3-uart", "intel,xscale-uart"; + reg = <0x0 0xd4017300 0x0 0x100>; + reg-shift = <2>; + reg-io-width = <4>; + clock-frequency = <14700000>; + interrupts = <46 IRQ_TYPE_LEVEL_HIGH>; + status = "disabled"; + }; + + uart5: serial@d4017400 { + compatible = "spacemit,k3-uart", "intel,xscale-uart"; + reg = <0x0 0xd4017400 0x0 0x100>; + reg-shift = <2>; + reg-io-width = <4>; + clock-frequency = <14700000>; + interrupts = <47 IRQ_TYPE_LEVEL_HIGH>; + status = "disabled"; + }; + + uart6: serial@d4017500 { + compatible = "spacemit,k3-uart", "intel,xscale-uart"; + reg = <0x0 0xd4017500 0x0 0x100>; + reg-shift = <2>; + reg-io-width = <4>; + clock-frequency = <14700000>; + interrupts = <48 IRQ_TYPE_LEVEL_HIGH>; + status = "disabled"; + }; + + uart7: serial@d4017600 { + compatible = "spacemit,k3-uart", "intel,xscale-uart"; + reg = <0x0 0xd4017600 0x0 0x100>; + reg-shift = <2>; + reg-io-width = <4>; + clock-frequency = <14700000>; + interrupts = <49 IRQ_TYPE_LEVEL_HIGH>; + status = "disabled"; + }; + + uart8: serial@d4017700 { + compatible = "spacemit,k3-uart", "intel,xscale-uart"; + reg = <0x0 0xd4017700 0x0 0x100>; + reg-shift = <2>; + reg-io-width = <4>; + clock-frequency = <14700000>; + interrupts = <50 IRQ_TYPE_LEVEL_HIGH>; + status = "disabled"; + }; + + uart9: serial@d4017800 { + compatible = "spacemit,k3-uart", "intel,xscale-uart"; + reg = <0x0 0xd4017800 0x0 0x100>; + reg-shift = <2>; + reg-io-width = <4>; + clock-frequency = <14700000>; + interrupts = <51 IRQ_TYPE_LEVEL_HIGH>; + status = "disabled"; + }; + + uart10: serial@d401f000 { + compatible = "spacemit,k3-uart", "intel,xscale-uart"; + reg = <0x0 0xd401f000 0x0 0x100>; + reg-shift = <2>; + reg-io-width = <4>; + clock-frequency = <14700000>; + interrupts = <281 IRQ_TYPE_LEVEL_HIGH>; + status = "disabled"; + }; + + simsic: interrupt-controller@e0400000 { + compatible = "spacemit,k3-imsics", "riscv,imsics"; + reg = <0x0 0xe0400000 0x0 0x200000>; + #interrupt-cells = <0>; + #msi-cells = <0>; + interrupt-controller; + interrupts-extended = <&cpu0_intc 9>, <&cpu1_intc 9>, + <&cpu2_intc 9>, <&cpu3_intc 9>, + <&cpu4_intc 9>, <&cpu5_intc 9>, + <&cpu6_intc 9>, <&cpu7_intc 9>; + msi-controller; + riscv,guest-index-bits = <6>; + riscv,hart-index-bits = <4>; + riscv,num-guest-ids = <511>; + riscv,num-ids = <511>; + }; + + saplic: interrupt-controller@e0804000 { + compatible = "spacemit,k3-aplic", "riscv,aplic"; + reg = <0x0 0xe0804000 0x0 0x4000>; + #interrupt-cells = <2>; + interrupt-controller; + msi-parent = <&simsic>; + riscv,num-sources = <512>; + }; + + clint: timer@e081c000 { + compatible = "spacemit,k3-clint", "sifive,clint0"; + reg = <0x0 0xe081c000 0x0 0x4000>; + interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>, + <&cpu1_intc 3>, <&cpu1_intc 7>, + <&cpu2_intc 3>, <&cpu2_intc 7>, + <&cpu3_intc 3>, <&cpu3_intc 7>, + <&cpu4_intc 3>, <&cpu4_intc 7>, + <&cpu5_intc 3>, <&cpu5_intc 7>, + <&cpu6_intc 3>, <&cpu6_intc 7>, + <&cpu7_intc 3>, <&cpu7_intc 7>; + }; + + mimsic: interrupt-controller@f1000000 { + compatible = "spacemit,k3-imsics", "riscv,imsics"; + reg = <0x0 0xf1000000 0x0 0x10000>; + #interrupt-cells = <0>; + #msi-cells = <0>; + interrupt-controller; + interrupts-extended = <&cpu0_intc 11>, <&cpu1_intc 11>, + <&cpu2_intc 11>, <&cpu3_intc 11>, + <&cpu4_intc 11>, <&cpu5_intc 11>, + <&cpu6_intc 11>, <&cpu7_intc 11>; + msi-controller; + riscv,guest-index-bits = <6>; + riscv,hart-index-bits = <4>; + riscv,num-guest-ids = <511>; + riscv,num-ids = <511>; + status = "reserved"; + }; + + maplic: interrupt-controller@f1800000 { + compatible = "spacemit,k3-aplic", "riscv,aplic"; + reg = <0x0 0xf1800000 0x0 0x4000>; + #interrupt-cells = <2>; + interrupt-controller; + msi-parent = <&mimsic>; + riscv,children = <&saplic>; + riscv,delegation = <&saplic 1 512>; + riscv,num-sources = <512>; + status = "reserved"; + }; + }; +}; From 7a61318049861b777f098d7148d892d7dc79b010 Mon Sep 17 00:00:00 2001 From: Guodong Xu Date: Thu, 15 Jan 2026 14:51:46 +0800 Subject: [PATCH 18/20] riscv: dts: spacemit: add K3 Pico-ITX board support K3 Pico-ITX is a 2.5-inch single-board computer equipted with a SpacemiT K3 SoC. This minimal device tree enables booting into a serial console with UART output. Signed-off-by: Guodong Xu Link: https://lore.kernel.org/r/20260115-k3-basic-dt-v5-7-6990ac9f4308@riscstar.com Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/Makefile | 1 + arch/riscv/boot/dts/spacemit/k3-pico-itx.dts | 29 ++++++++++++++++++++ 2 files changed, 30 insertions(+) create mode 100644 arch/riscv/boot/dts/spacemit/k3-pico-itx.dts diff --git a/arch/riscv/boot/dts/spacemit/Makefile b/arch/riscv/boot/dts/spacemit/Makefile index 95889e7269d1..7e2b87702571 100644 --- a/arch/riscv/boot/dts/spacemit/Makefile +++ b/arch/riscv/boot/dts/spacemit/Makefile @@ -4,3 +4,4 @@ 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-pico-itx.dtb diff --git a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts new file mode 100644 index 000000000000..b691304d4b74 --- /dev/null +++ b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts @@ -0,0 +1,29 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MIT) +/* + * Copyright (c) 2026 SpacemiT (Hangzhou) Technology Co. Ltd + * Copyright (c) 2026 Guodong Xu + */ + +#include "k3.dtsi" + +/ { + model = "SpacemiT K3 Pico-ITX"; + compatible = "spacemit,k3-pico-itx", "spacemit,k3"; + + aliases { + serial0 = &uart0; + }; + + chosen { + stdout-path = "serial0"; + }; + + memory@100000000 { + device_type = "memory"; + reg = <0x1 0x00000000 0x4 0x00000000>; + }; +}; + +&uart0 { + status = "okay"; +}; From 4083d8d6c0aa445fc440d70a5258351c47547ee2 Mon Sep 17 00:00:00 2001 From: Troy Mitchell Date: Thu, 8 Jan 2026 14:42:40 +0800 Subject: [PATCH 19/20] riscv: dts: spacemit: pinctrl: update register and IO power Change the size of the reg register to 0x1000 to match the hardware. This register range covers the IO power domain's register addresses. The IO power domain registers are protected. In order to access the protected IO power domain registers, a valid unlock sequence must be performed by writing the required keys to the AIB Secure Access Register (ASAR). The ASAR register resides within the APBC register address space. A corresponding syscon property `spacemit,apbc` is added to allow the pinctrl driver to access this register. Signed-off-by: Troy Mitchell Acked-by: Linus Walleij Link: https://lore.kernel.org/r/20260108-kx-pinctrl-aib-io-pwr-domain-v2-3-6bcb46146e53@linux.spacemit.com Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1.dtsi | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index cf5802687835..529ec68e9c23 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -628,10 +628,11 @@ i2c8: i2c@d401d800 { pinctrl: pinctrl@d401e000 { compatible = "spacemit,k1-pinctrl"; - reg = <0x0 0xd401e000 0x0 0x400>; + reg = <0x0 0xd401e000 0x0 0x1000>; clocks = <&syscon_apbc CLK_AIB>, <&syscon_apbc CLK_AIB_BUS>; clock-names = "func", "bus"; + spacemit,apbc = <&syscon_apbc>; }; pwm8: pwm@d4020000 { From 5164e95565d3fd508ca8a95351323f5716dfb695 Mon Sep 17 00:00:00 2001 From: Chukun Pan Date: Tue, 20 Jan 2026 18:00:01 +0800 Subject: [PATCH 20/20] riscv: dts: spacemit: Disable ETH PHY sleep mode for OrangePi On the SpacemiT K1 platform, the MAC can't read statistics when the PHY clock stops. Disable Link Down Power Saving Mode for the YT8531C PHY on OrangePi R2S and RV2 boards to avoid reading statistics timeout logs. Signed-off-by: Chukun Pan Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20260120100001.1285624-2-amadeus@jmu.edu.cn Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts | 2 ++ arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 2 ++ 2 files changed, 4 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts index 58098c4a2aab..de75f6aac740 100644 --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts @@ -52,6 +52,7 @@ mdio-bus { rgmii0: phy@1 { reg = <0x1>; + motorcomm,auto-sleep-disabled; }; }; }; @@ -75,6 +76,7 @@ mdio-bus { rgmii1: phy@1 { reg = <0x1>; + motorcomm,auto-sleep-disabled; }; }; }; diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts index 41dc8e35e6eb..7b7331cb3c72 100644 --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts @@ -54,6 +54,7 @@ mdio-bus { rgmii0: phy@1 { reg = <0x1>; + motorcomm,auto-sleep-disabled; }; }; }; @@ -77,6 +78,7 @@ mdio-bus { rgmii1: phy@1 { reg = <0x1>; + motorcomm,auto-sleep-disabled; }; }; };