[PATCH 0/2] riscv: dts: spacemit: k3: Add USB/PCIe devices

[PATCH 0/2] riscv: dts: spacemit: k3: Add USB/PCIe devices

[Inochi Amaoto]

DTS for series:
https://lore.kernel.org/linux-pci/20260709040027.958400-1-inochiama@gmail.com
https://lore.kernel.org/linux-phy/20260703021024.495433-1-inochiama@gmail.com

Inochi Amaoto (2):
  riscv: dts: spacemit: k3: add USB controller and USB phy support
  riscv: dts: spacemit: k3: Add PCIe device node

 arch/riscv/boot/dts/spacemit/k3-pico-itx.dts |  51 ++++
 arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi |  33 +++
 arch/riscv/boot/dts/spacemit/k3.dtsi         | 237 +++++++++++++++++++
 3 files changed, 321 insertions(+)

--
2.55.0


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[PATCH 1/2] riscv: dts: spacemit: k3: add USB controller and USB phy support

[Inochi Amaoto]

Add all USB device node to the Spacemit K3.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
---
 arch/riscv/boot/dts/spacemit/k3-pico-itx.dts | 13 ++++++
 arch/riscv/boot/dts/spacemit/k3.dtsi         | 42 ++++++++++++++++++++
 2 files changed, 55 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
index b89c1521e664..2a6d35a64d5c 100644
--- a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
+++ b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
@@ -182,6 +182,11 @@ dldo7: dldo7 {
 	};
 };
 
+&combophy {
+	spacemit,apmu = <&syscon_apmu 0x11>;
+	status = "okay";
+};
+
 &eth0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&gmac0_rgmii_0_cfg>, <&gmac0_phy_0_cfg>;
@@ -221,3 +226,11 @@ hub@1 {
 &usb2_phy {
 	status = "okay";
 };
+
+&usb3d_u2phy {
+	status = "okay";
+};
+
+&usb3d {
+	status = "okay";
+};
diff --git a/arch/riscv/boot/dts/spacemit/k3.dtsi b/arch/riscv/boot/dts/spacemit/k3.dtsi
index 19fc9b49668e..82c9e2da82e9 100644
--- a/arch/riscv/boot/dts/spacemit/k3.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k3.dtsi
@@ -7,6 +7,7 @@
 #include <dt-bindings/clock/spacemit,k3-clocks.h>
 #include <dt-bindings/reset/spacemit,k3-resets.h>
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/phy/phy.h>
 
 /dts-v1/;
 
@@ -438,6 +439,47 @@ soc: soc {
 		dma-noncoherent;
 		ranges;
 
+		usb3d: usb@81a00000 {
+			compatible = "spacemit,k3-dwc3";
+			reg = <0x0 0x81a00000 0x0 0x10000>;
+			interrupts = <149 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-parent = <&saplic>;
+			clocks = <&syscon_apmu CLK_APMU_USB3_PORTD_BUS>;
+			clock-names = "usbdrd30";
+			resets = <&syscon_apmu RESET_APMU_USB3_D_AHB>,
+				 <&syscon_apmu RESET_APMU_USB3_D_VCC>,
+				 <&syscon_apmu RESET_APMU_USB3_D_PHY>;
+			reset-names = "ahb", "vcc", "phy";
+			phys = <&usb3d_u2phy>,
+			       <&combophy 4 PHY_TYPE_USB3>;
+			phy-names = "usb2-phy", "usb3-phy";
+			phy_type = "utmi";
+			snps,dis_enblslpm_quirk;
+			snps,dis_u2_susphy_quirk;
+			snps,dis_u3_susphy_quirk;
+			snps,dis-del-phy-power-chg-quirk;
+			snps,dis-tx-ipgap-linecheck-quirk;
+			snps,parkmode-disable-ss-quirk;
+			dr_mode = "host";
+			status = "disabled";
+		};
+
+		usb3d_u2phy: phy@81b00000 {
+			compatible = "spacemit,k3-usb2-phy";
+			reg = <0x0 0x81b00000 0x0 0x200>;
+			clocks = <&syscon_apmu CLK_APMU_USB2_BUS>;
+			#phy-cells = <0>;
+			status = "disabled";
+		};
+
+		combophy: phy@81d00000 {
+			compatible = "spacemit,k3-combo-phy";
+			reg = <0x0 0x81d00000 0x0 0x600000>;
+			#phy-cells = <2>;
+			spacemit,apb-spare = <&pll>;
+			status = "disabled";
+		};
+
 		usb2_host: usb@c0a00000 {
 			compatible = "spacemit,k3-dwc3";
 			reg = <0x0 0xc0a00000 0x0 0x10000>;
-- 
2.55.0


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[PATCH 2/2] riscv: dts: spacemit: k3: Add PCIe device node

[Inochi Amaoto]

Add all PCIe device node for Spacemit K3.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
---
 arch/riscv/boot/dts/spacemit/k3-pico-itx.dts |  38 ++++
 arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi |  33 ++++
 arch/riscv/boot/dts/spacemit/k3.dtsi         | 195 +++++++++++++++++++
 3 files changed, 266 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
index 2a6d35a64d5c..1eb5abbc61f9 100644
--- a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
+++ b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
@@ -205,6 +205,44 @@ phy0: phy@1 {
 	};
 };
 
+&pcie0_rc {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie0_0_cfg>;
+	num-lanes = <4>;
+	status = "okay";
+
+	pcie@0 {
+		vpcie3v3-supply = <&reg_aux_vcc3v3>;
+		phys = <&combophy 0 PHY_TYPE_PCIE>,
+		       <&combophy 1 PHY_TYPE_PCIE>;
+	};
+};
+
+&pcie2_rc {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie2_0_cfg>;
+	num-lanes = <2>;
+	status = "okay";
+
+	pcie@0 {
+		vpcie3v3-supply = <&reg_aux_vcc3v3>;
+		phys = <&combophy 2 PHY_TYPE_PCIE>,
+		       <&combophy 3 PHY_TYPE_PCIE>;
+	};
+};
+
+&pcie4_rc {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie4_0_cfg>;
+	num-lanes = <1>;
+	status = "okay";
+
+	pcie@0 {
+		vpcie3v3-supply = <&reg_aux_vcc3v3>;
+		phys = <&combophy 5 PHY_TYPE_PCIE>;
+	};
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_0_cfg>;
diff --git a/arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi
index 3ee1471f3798..68aa21a5279f 100644
--- a/arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi
@@ -689,4 +689,37 @@ uart0-0-pins {
 			drive-strength = <25>;
 		};
 	};
+
+	pcie0_0_cfg: pcie0-0-cfg {
+		pcie0-0-pins {
+			pinmux = <K3_PADCONF(79, 5)>,   /* pcie0 perst */
+				 <K3_PADCONF(81, 5)>;	/* pcie0 clkreq */
+
+			bias-pull-up = <1>;
+			drive-strength = <33>;
+			power-source = <1800>;
+		};
+	};
+
+	pcie2_0_cfg: pcie2-0-cfg {
+		pcie2-0-pins {
+			pinmux = <K3_PADCONF(25, 4)>,	/* pcie2 perst */
+				 <K3_PADCONF(27, 4)>;	/* pcie2 clkreq */
+
+			drive-strength = <38>;
+			power-source = <3300>;
+		};
+	};
+
+	pcie4_0_cfg: pcie4-0-cfg {
+		pcie4-0-pins {
+			pinmux = <K3_PADCONF(76, 5)>,	/* pcie4 perst */
+				 <K3_PADCONF(77, 5)>,	/* pcie4 wake */
+				 <K3_PADCONF(78, 5)>;	/* pcie4 clkreq */
+
+			bias-pull-up = <1>;
+			drive-strength = <33>;
+			power-source = <1800>;
+		};
+	};
 };
diff --git a/arch/riscv/boot/dts/spacemit/k3.dtsi b/arch/riscv/boot/dts/spacemit/k3.dtsi
index 82c9e2da82e9..53cfb2ad48cf 100644
--- a/arch/riscv/boot/dts/spacemit/k3.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k3.dtsi
@@ -439,6 +439,201 @@ soc: soc {
 		dma-noncoherent;
 		ranges;
 
+		pcie0_rc: pcie@80000000 {
+			compatible = "spacemit,k3-pcie";
+			reg = <0x0 0x80000000 0x0 0x00001000>,
+			      <0x0 0x80300000 0x0 0x00003f20>,
+			      <0x11 0x00000000 0x0 0x00010000>,
+			      <0x0 0x82900000 0x0 0x00001000>,
+			      <0x0 0x80100000 0x0 0x00001000>;
+			reg-names = "dbi", "atu", "config", "link", "dbi2";
+			device_type = "pci";
+			#address-cells = <3>;
+			#size-cells = <2>;
+			clocks = <&syscon_apmu CLK_APMU_PCIE_PORTA_DBI>,
+				 <&syscon_apmu CLK_APMU_PCIE_PORTA_MSTE>,
+				 <&syscon_apmu CLK_APMU_PCIE_PORTA_SLV>;
+			clock-names = "dbi", "mstr", "slv";
+			msi-parent = <&simsic>;
+			ranges = <0x01000000 0x00 0x00010000 0x11 0x00010000 0x0 0x00100000>,
+				 <0x02000000 0x0 0x00110000 0x11 0x00110000 0x0 0x7fef0000>,
+				 <0x43000000 0x18 0x00000000 0x18 0x00000000 0x1 0x00000000>;
+			resets = <&syscon_apmu RESET_APMU_PCIE_A_DBI>,
+				 <&syscon_apmu RESET_APMU_PCIE_A_MASTER>,
+				 <&syscon_apmu RESET_APMU_PCIE_A_SLAVE>;
+			reset-names = "dbi", "mstr", "slv";
+			max-link-speed = <3>;
+			linux,pci-domain = <0>;
+			spacemit,apmu = <&syscon_apmu 0x1f0>;
+			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_rc: pcie@80400000 {
+			compatible = "spacemit,k3-pcie";
+			reg = <0x0 0x80400000 0x0 0x00001000>,
+			      <0x0 0x80700000 0x0 0x00003f20>,
+			      <0x11 0x80000000 0x0 0x00010000>,
+			      <0x0 0x82c00000 0x0 0x00001000>,
+			      <0x0 0x80500000 0x0 0x00001000>;
+			reg-names = "dbi", "atu", "config", "link", "dbi2";
+			device_type = "pci";
+			#address-cells = <3>;
+			#size-cells = <2>;
+			clocks = <&syscon_apmu CLK_APMU_PCIE_PORTB_DBI>,
+				 <&syscon_apmu CLK_APMU_PCIE_PORTB_MSTE>,
+				 <&syscon_apmu CLK_APMU_PCIE_PORTB_SLV>;
+			clock-names = "dbi", "mstr", "slv";
+			msi-parent = <&simsic>;
+			ranges = <0x01000000 0x0 0x00010000 0x11 0x80010000 0x0 0x00100000>,
+				 <0x02000000 0x0 0x80110000 0x11 0x80110000 0x0 0x7fef0000>,
+				 <0x43000000 0x16 0x00000000 0x16 0x00000000 0x1 0x00000000>;
+			resets = <&syscon_apmu RESET_APMU_PCIE_B_DBI>,
+				 <&syscon_apmu RESET_APMU_PCIE_B_MASTER>,
+				 <&syscon_apmu RESET_APMU_PCIE_B_SLAVE>;
+			reset-names = "dbi", "mstr", "slv";
+			max-link-speed = <3>;
+			linux,pci-domain = <1>;
+			spacemit,apmu = <&syscon_apmu 0x1d0>;
+			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_rc: pcie@80800000 {
+			compatible = "spacemit,k3-pcie";
+			reg = <0x0 0x80800000 0x0 0x00001000>,
+			      <0x0 0x80b00000 0x0 0x00003f20>,
+			      <0x12 0x00000000 0x0 0x00010000>,
+			      <0x0 0x82d00000 0x0 0x00001000>,
+			      <0x0 0x80900000 0x0 0x00001000>;
+			reg-names = "dbi", "atu", "config", "link", "dbi2";
+			device_type = "pci";
+			#address-cells = <3>;
+			#size-cells = <2>;
+			clocks = <&syscon_apmu CLK_APMU_PCIE_PORTC_DBI>,
+				 <&syscon_apmu CLK_APMU_PCIE_PORTC_MSTE>,
+				 <&syscon_apmu CLK_APMU_PCIE_PORTC_SLV>;
+			clock-names = "dbi", "mstr", "slv";
+			msi-parent = <&simsic>;
+			ranges = <0x01000000 0x00 0x00000000 0x12 0x00010000 0x0 0x00100000>,
+				 <0x02000000 0x0 0x00110000 0x12 0x00110000 0x0 0x7fef0000>,
+				 <0x43000000 0x15 0x00000000 0x15 0x00000000 0x1 0x00000000>;
+			resets = <&syscon_apmu RESET_APMU_PCIE_C_DBI>,
+				 <&syscon_apmu RESET_APMU_PCIE_C_MASTER>,
+				 <&syscon_apmu RESET_APMU_PCIE_C_SLAVE>;
+			reset-names = "dbi", "mstr", "slv";
+			linux,pci-domain = <2>;
+			max-link-speed = <3>;
+			spacemit,apmu = <&syscon_apmu 0x1c8>;
+			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;
+			};
+		};
+
+		pcie3_rc: pcie@80c00000 {
+			compatible = "spacemit,k3-pcie";
+			reg = <0x0 0x80c00000 0x0 0x00001000>,
+			      <0x0 0x80f00000 0x0 0x00003f20>,
+			      <0x12 0x80000000 0x0 0x00010000>,
+			      <0x0 0x82a00000 0x0 0x00001000>,
+			      <0x0 0x80d00000 0x0 0x00001000>;
+			reg-names = "dbi", "atu", "config", "link", "dbi2";
+			device_type = "pci";
+			#address-cells = <3>;
+			#size-cells = <2>;
+			clocks = <&syscon_apmu CLK_APMU_PCIE_PORTD_DBI>,
+				 <&syscon_apmu CLK_APMU_PCIE_PORTD_MSTE>,
+				 <&syscon_apmu CLK_APMU_PCIE_PORTD_SLV>;
+			clock-names = "dbi", "mstr", "slv";
+			msi-parent = <&simsic>;
+			ranges = <0x01000000 0x0 0x00010000 0x12 0x80010000 0x0 0x100000>,
+				 <0x02000000 0x0 0x80110000 0x12 0x80110000 0x0 0x3fef0000>,
+				 <0x43000000 0x14 0x00000000 0x14 0x00000000 0x1 0x00000000>;
+			resets = <&syscon_apmu RESET_APMU_PCIE_D_DBI>,
+				 <&syscon_apmu RESET_APMU_PCIE_D_MASTER>,
+				 <&syscon_apmu RESET_APMU_PCIE_D_SLAVE>;
+			reset-names = "dbi", "mstr", "slv";
+			linux,pci-domain = <3>;
+			bus-range = <0x00 0xff>;
+			max-link-speed = <3>;
+			spacemit,apmu = <&syscon_apmu 0x1e0>;
+			status = "disabled";
+
+			pcie3_port: pcie@0 {
+				device_type = "pci";
+				compatible = "pciclass,0604";
+				reg = <0x0 0x0 0x0 0x0 0x0>;
+				#address-cells = <3>;
+				#size-cells = <2>;
+				ranges;
+			};
+		};
+
+		pcie4_rc: pcie@81000000 {
+			compatible = "spacemit,k3-pcie";
+			reg = <0x0 0x81000000 0x0 0x00001000>,
+			      <0x0 0x81300000 0x0 0x00003f20>,
+			      <0x12 0xc0000000 0x0 0x00010000>,
+			      <0x0 0x82b00000 0x0 0x00001000>,
+			      <0x0 0x81100000 0x0 0x00001000>;
+			reg-names = "dbi", "atu", "config", "link", "dbi2";
+			device_type = "pci";
+			#address-cells = <3>;
+			#size-cells = <2>;
+			clocks = <&syscon_apmu CLK_APMU_PCIE_PORTE_DBI>,
+				 <&syscon_apmu CLK_APMU_PCIE_PORTE_MSTE>,
+				 <&syscon_apmu CLK_APMU_PCIE_PORTE_SLV>;
+			clock-names = "dbi", "mstr", "slv";
+			msi-parent = <&simsic>;
+			ranges = <0x01000000 0x0 0x00000000 0x12 0xc0010000 0x0 0x100000>,
+				 <0x02000000 0x0 0xc0110000 0x12 0xc0110000 0x0 0x3fef0000>,
+				 <0x43000000 0x13 0x00000000 0x13 0x00000000 0x1 0x00000000>;
+			resets = <&syscon_apmu RESET_APMU_PCIE_E_DBI>,
+				 <&syscon_apmu RESET_APMU_PCIE_E_MASTER>,
+				 <&syscon_apmu RESET_APMU_PCIE_E_SLAVE>;
+			reset-names = "dbi", "mstr", "slv";
+			linux,pci-domain = <4>;
+			max-link-speed = <3>;
+			spacemit,apmu = <&syscon_apmu 0x1e8>;
+			status = "disabled";
+
+			pcie4_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;
+			};
+		};
+
 		usb3d: usb@81a00000 {
 			compatible = "spacemit,k3-dwc3";
 			reg = <0x0 0x81a00000 0x0 0x10000>;
-- 
2.55.0


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Re: [PATCH 2/2] riscv: dts: spacemit: k3: Add PCIe device node

[Anirudh Srinivasan]

Hi Inochi,

On Thu, Jul 09, 2026 at 12:04:14PM +0800, Inochi Amaoto wrote:
> Add all PCIe device node for Spacemit K3.
> 
> Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
> ---
>  arch/riscv/boot/dts/spacemit/k3-pico-itx.dts |  38 ++++
>  arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi |  33 ++++
>  arch/riscv/boot/dts/spacemit/k3.dtsi         | 195 +++++++++++++++++++
>  3 files changed, 266 insertions(+)
> 

I see some warnings printed during probe

[   10.842955] r8169 0002:01:00.0: of_irq_parse_pci: failed with rc=-22

[   10.937754] rtw89_8852be 0004:01:00.0: of_irq_parse_pci: failed with rc=-22

I see that all the 3 rc nodes are missing an interrupts node and an
interrupt parent (saplic). The vendor DT seems to have this. Not sure if
this is related.

The 10G ethernet probes fine, but the wifi card fails to probe. Seems
like the card is trying to request 32 bit DMA addresses and we're
failing cause we have 64 bit memory only.
The vendor kernel seems to have a patch to enable 36 bit DMA in
the rtw89 driver. That'll probably fix this.

[   10.937754] rtw89_8852be 0004:01:00.0: of_irq_parse_pci: failed with rc=-22
[   10.987983] rtw89_8852be 0004:01:00.0: loaded firmware rtw89/rtw8852b_fw-2.bin
[   10.988151] rtw89_8852be 0004:01:00.0: enabling device (0000 -> 0003)
[   10.988215] (udev-worker): page allocation failure: order:2, mode:0xcc4(GFP_KERNEL|GFP_DMA32), nodemask=(null),cpuset=/,mems_allowed=0
[   10.988243] CPU: 5 UID: 0 PID: 503 Comm: (udev-worker) Not tainted 7.2.0-rc1-00034-gc57907b4459d #1 PREEMPT(lazy)
[   10.988249] Hardware name: SpacemiT K3 Pico-ITX (DT)
[   10.988252] Call Trace:
[   10.988255] [<ffffffff8001f2b8>] dump_backtrace+0x28/0x48
[   10.988265] [<ffffffff80002612>] show_stack+0x3a/0x58
[   10.988269] [<ffffffff80016432>] dump_stack_lvl+0x5a/0x88
[   10.988274] [<ffffffff80016478>] dump_stack+0x18/0x22
[   10.988277] [<ffffffff803984da>] warn_alloc+0x102/0x120
[   10.988283] [<ffffffff80398b7a>] __alloc_frozen_pages_noprof+0x682/0x1470 
[   10.988288] [<ffffffff80399980>] __alloc_pages_noprof+0x18/0x38
[   10.988292] [<ffffffff80113494>] __dma_direct_alloc_pages.isra.0+0x26c/0x428
[   10.988298] [<ffffffff801137a8>] dma_direct_alloc+0x78/0x3d0
[   10.988301] [<ffffffff8011282c>] dma_alloc_attrs+0x74/0x240
[   10.988309] [<ffffffff031a6bb6>] rtw89_pci_probe+0x20e/0xc90 [rtw89_pci]
[   10.988375] [<ffffffff8087cd1c>] local_pci_probe+0x3c/0x90
[   10.988381] [<ffffffff8087def6>] pci_device_probe+0xde/0x298
[   10.988385] [<ffffffff80a80f3e>] really_probe+0x9e/0x3e0
[   10.988390] [<ffffffff80a81308>] __driver_probe_device+0x88/0x190
[   10.988393] [<ffffffff80a814f8>] driver_probe_device+0x38/0xc0
[   10.988396] [<ffffffff80a81796>] __driver_attach+0xbe/0x208
[   10.988399] [<ffffffff80a7e22c>] bus_for_each_dev+0x6c/0xd0
[   10.988404] [<ffffffff80a806ce>] driver_attach+0x26/0x40
[   10.988407] [<ffffffff80a7fcac>] bus_add_driver+0x15c/0x298
[   10.988410] [<ffffffff80a82a82>] driver_register+0x52/0x118
[   10.988413] [<ffffffff8087c44c>] __pci_register_driver+0x4c/0x70
[   10.988417] [<ffffffff02fbc038>] rtw89_8852be_driver_init+0x30/0xff8 [rtw89_8852be]
[   10.988422] [<ffffffff80017b2a>] do_one_initcall+0x5a/0x2d0
[   10.988427] [<ffffffff8011d7b6>] do_init_module+0x96/0x2c0
[   10.988430] [<ffffffff8011f6c6>] load_module+0x19a6/0x2078
[   10.988434] [<ffffffff80120046>] init_module_from_file+0xce/0x138
[   10.988437] [<ffffffff801202d0>] __riscv_sys_finit_module+0x220/0x398
[   10.988441] [<ffffffff81010c40>] do_trap_ecall_u+0x108/0x588
[   10.988446] [<ffffffff81022a14>] handle_exception+0x16c/0x178
[   10.988455] Mem-Info:
[   10.988483] active_anon:5773 inactive_anon:0 isolated_anon:0
                active_file:0 inactive_file:30149 isolated_file:0
                unevictable:0 dirty:222 writeback:0
                slab_reclaimable:3461 slab_unreclaimable:8595
                mapped:5588 shmem:115 pagetables:949
                sec_pagetables:0 bounce:0
                kernel_misc_reclaimable:0
                free:4028911 free_pcp:0 free_cma:0
[   10.988493] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[   10.988497] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=64kB
[   10.988501] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 
[   10.988505] 30300 total pagecache pages
[   10.988508] 0 pages in swap cache
[   10.988511] Free swap  = 0kB
[   10.988514] Total swap = 0kB
[   10.988516] 4186368 pages RAM
[   10.988519] 0 pages HighMem/MovableOnly
[   10.988522] 86381 pages reserved
[   10.988525] 0 pages cma reserved
[   10.988528] Memory cgroup min protection 0kB -- low protection 0kB
[   10.988532] rtw89_8852be 0004:01:00.0: failed to alloc dma tx rings
[   10.994421] rtw89_8852be 0004:01:00.0: failed to alloc pci trx rings
[   11.000734] rtw89_8852be 0004:01:00.0: failed to setup pci resource
[   11.007088] rtw89_8852be 0004:01:00.0: probe with driver rtw89_8852be failed with error -12

Regards
Anirudh Srinivasan

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Re: [PATCH 2/2] riscv: dts: spacemit: k3: Add PCIe device node

[Inochi Amaoto]

On Sun, Jul 12, 2026 at 11:13:07PM -0500, Anirudh Srinivasan wrote:
> Hi Inochi,
> 
> On Thu, Jul 09, 2026 at 12:04:14PM +0800, Inochi Amaoto wrote:
> > Add all PCIe device node for Spacemit K3.
> > 
> > Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
> > ---
> >  arch/riscv/boot/dts/spacemit/k3-pico-itx.dts |  38 ++++
> >  arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi |  33 ++++
> >  arch/riscv/boot/dts/spacemit/k3.dtsi         | 195 +++++++++++++++++++
> >  3 files changed, 266 insertions(+)
> > 
> 
> I see some warnings printed during probe
> 
> [   10.842955] r8169 0002:01:00.0: of_irq_parse_pci: failed with rc=-22
> 
> [   10.937754] rtw89_8852be 0004:01:00.0: of_irq_parse_pci: failed with rc=-22
> 

This is an expected error because the driver does not support INTx
but the hardware claims it supports. Since the vendor does not want
to support it, so there is no way for the upstreamer to add this.

> I see that all the 3 rc nodes are missing an interrupts node and an
> interrupt parent (saplic). The vendor DT seems to have this. Not sure if
> this is related.
> 
> The 10G ethernet probes fine, but the wifi card fails to probe. Seems
> like the card is trying to request 32 bit DMA addresses and we're
> failing cause we have 64 bit memory only.
> The vendor kernel seems to have a patch to enable 36 bit DMA in
> the rtw89 driver. That'll probably fix this.
> 

This warning is also found on my test, it is not related to
the PCIe driver, but a lack of the RTL phy driver. :(

You may also noticed a bad performance on this 10G ethernet,
it is caused by the single queue used by the RTL driver.
IIRC, even 9800 X3D can not achieve the max speed.

Regards,
Inochi

> [   10.937754] rtw89_8852be 0004:01:00.0: of_irq_parse_pci: failed with rc=-22
> [   10.987983] rtw89_8852be 0004:01:00.0: loaded firmware rtw89/rtw8852b_fw-2.bin
> [   10.988151] rtw89_8852be 0004:01:00.0: enabling device (0000 -> 0003)
> [   10.988215] (udev-worker): page allocation failure: order:2, mode:0xcc4(GFP_KERNEL|GFP_DMA32), nodemask=(null),cpuset=/,mems_allowed=0
> [   10.988243] CPU: 5 UID: 0 PID: 503 Comm: (udev-worker) Not tainted 7.2.0-rc1-00034-gc57907b4459d #1 PREEMPT(lazy)
> [   10.988249] Hardware name: SpacemiT K3 Pico-ITX (DT)
> [   10.988252] Call Trace:
> [   10.988255] [<ffffffff8001f2b8>] dump_backtrace+0x28/0x48
> [   10.988265] [<ffffffff80002612>] show_stack+0x3a/0x58
> [   10.988269] [<ffffffff80016432>] dump_stack_lvl+0x5a/0x88
> [   10.988274] [<ffffffff80016478>] dump_stack+0x18/0x22
> [   10.988277] [<ffffffff803984da>] warn_alloc+0x102/0x120
> [   10.988283] [<ffffffff80398b7a>] __alloc_frozen_pages_noprof+0x682/0x1470 
> [   10.988288] [<ffffffff80399980>] __alloc_pages_noprof+0x18/0x38
> [   10.988292] [<ffffffff80113494>] __dma_direct_alloc_pages.isra.0+0x26c/0x428
> [   10.988298] [<ffffffff801137a8>] dma_direct_alloc+0x78/0x3d0
> [   10.988301] [<ffffffff8011282c>] dma_alloc_attrs+0x74/0x240
> [   10.988309] [<ffffffff031a6bb6>] rtw89_pci_probe+0x20e/0xc90 [rtw89_pci]
> [   10.988375] [<ffffffff8087cd1c>] local_pci_probe+0x3c/0x90
> [   10.988381] [<ffffffff8087def6>] pci_device_probe+0xde/0x298
> [   10.988385] [<ffffffff80a80f3e>] really_probe+0x9e/0x3e0
> [   10.988390] [<ffffffff80a81308>] __driver_probe_device+0x88/0x190
> [   10.988393] [<ffffffff80a814f8>] driver_probe_device+0x38/0xc0
> [   10.988396] [<ffffffff80a81796>] __driver_attach+0xbe/0x208
> [   10.988399] [<ffffffff80a7e22c>] bus_for_each_dev+0x6c/0xd0
> [   10.988404] [<ffffffff80a806ce>] driver_attach+0x26/0x40
> [   10.988407] [<ffffffff80a7fcac>] bus_add_driver+0x15c/0x298
> [   10.988410] [<ffffffff80a82a82>] driver_register+0x52/0x118
> [   10.988413] [<ffffffff8087c44c>] __pci_register_driver+0x4c/0x70
> [   10.988417] [<ffffffff02fbc038>] rtw89_8852be_driver_init+0x30/0xff8 [rtw89_8852be]
> [   10.988422] [<ffffffff80017b2a>] do_one_initcall+0x5a/0x2d0
> [   10.988427] [<ffffffff8011d7b6>] do_init_module+0x96/0x2c0
> [   10.988430] [<ffffffff8011f6c6>] load_module+0x19a6/0x2078
> [   10.988434] [<ffffffff80120046>] init_module_from_file+0xce/0x138
> [   10.988437] [<ffffffff801202d0>] __riscv_sys_finit_module+0x220/0x398
> [   10.988441] [<ffffffff81010c40>] do_trap_ecall_u+0x108/0x588
> [   10.988446] [<ffffffff81022a14>] handle_exception+0x16c/0x178
> [   10.988455] Mem-Info:
> [   10.988483] active_anon:5773 inactive_anon:0 isolated_anon:0
>                 active_file:0 inactive_file:30149 isolated_file:0
>                 unevictable:0 dirty:222 writeback:0
>                 slab_reclaimable:3461 slab_unreclaimable:8595
>                 mapped:5588 shmem:115 pagetables:949
>                 sec_pagetables:0 bounce:0
>                 kernel_misc_reclaimable:0
>                 free:4028911 free_pcp:0 free_cma:0
> [   10.988493] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
> [   10.988497] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=64kB
> [   10.988501] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 
> [   10.988505] 30300 total pagecache pages
> [   10.988508] 0 pages in swap cache
> [   10.988511] Free swap  = 0kB
> [   10.988514] Total swap = 0kB
> [   10.988516] 4186368 pages RAM
> [   10.988519] 0 pages HighMem/MovableOnly
> [   10.988522] 86381 pages reserved
> [   10.988525] 0 pages cma reserved
> [   10.988528] Memory cgroup min protection 0kB -- low protection 0kB
> [   10.988532] rtw89_8852be 0004:01:00.0: failed to alloc dma tx rings
> [   10.994421] rtw89_8852be 0004:01:00.0: failed to alloc pci trx rings
> [   11.000734] rtw89_8852be 0004:01:00.0: failed to setup pci resource
> [   11.007088] rtw89_8852be 0004:01:00.0: probe with driver rtw89_8852be failed with error -12
> 
> Regards
> Anirudh Srinivasan

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Re: [PATCH 2/2] riscv: dts: spacemit: k3: Add PCIe device node

[Anirudh Srinivasan]

Hi Inochi,

On Sun, Jul 12, 2026 at 11:19 PM Inochi Amaoto <inochiama@gmail.com> wrote:
>
> On Sun, Jul 12, 2026 at 11:13:07PM -0500, Anirudh Srinivasan wrote:
> > Hi Inochi,
> >
> > On Thu, Jul 09, 2026 at 12:04:14PM +0800, Inochi Amaoto wrote:
> > > Add all PCIe device node for Spacemit K3.
> > >
> > > Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
> > > ---
> > >  arch/riscv/boot/dts/spacemit/k3-pico-itx.dts |  38 ++++
> > >  arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi |  33 ++++
> > >  arch/riscv/boot/dts/spacemit/k3.dtsi         | 195 +++++++++++++++++++
> > >  3 files changed, 266 insertions(+)
> > >
> >
> > I see some warnings printed during probe
> >
> > [   10.842955] r8169 0002:01:00.0: of_irq_parse_pci: failed with rc=-22
> >
> > [   10.937754] rtw89_8852be 0004:01:00.0: of_irq_parse_pci: failed with rc=-22
> >
>
> This is an expected error because the driver does not support INTx
> but the hardware claims it supports. Since the vendor does not want
> to support it, so there is no way for the upstreamer to add this.

Are you saying that the hardware advertises support for INTx, but
spacemit hasn't provided a driver that uses it?

Is there a way to let the driver know to not try setting up legacy
interrupts then? It seems like it's trying to do that now, and failing
to find interrupts node in the DT.

>
> > I see that all the 3 rc nodes are missing an interrupts node and an
> > interrupt parent (saplic). The vendor DT seems to have this. Not sure if
> > this is related.
> >
> > The 10G ethernet probes fine, but the wifi card fails to probe. Seems
> > like the card is trying to request 32 bit DMA addresses and we're
> > failing cause we have 64 bit memory only.
> > The vendor kernel seems to have a patch to enable 36 bit DMA in
> > the rtw89 driver. That'll probably fix this.
> >
>
> This warning is also found on my test, it is not related to
> the PCIe driver, but a lack of the RTL phy driver. :(
>
> You may also noticed a bad performance on this 10G ethernet,
> it is caused by the single queue used by the RTL driver.
> IIRC, even 9800 X3D can not achieve the max speed.

I don't have the ability to test the 10G NIC unfortunately :(

Regards
Anirudh Srinivasan

>
> Regards,
> Inochi
>

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Re: [PATCH 1/2] riscv: dts: spacemit: k3: add USB controller and USB phy support

[Aurelien Jarno]

On 2026-07-09 12:04, Inochi Amaoto wrote:
> Add all USB device node to the Spacemit K3.
> 
> Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
> ---
>  arch/riscv/boot/dts/spacemit/k3-pico-itx.dts | 13 ++++++
>  arch/riscv/boot/dts/spacemit/k3.dtsi         | 42 ++++++++++++++++++++
>  2 files changed, 55 insertions(+)
> 
> diff --git a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
> index b89c1521e664..2a6d35a64d5c 100644
> --- a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
> +++ b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
> @@ -182,6 +182,11 @@ dldo7: dldo7 {
>  	};
>  };
>  
> +&combophy {
> +	spacemit,apmu = <&syscon_apmu 0x11>;
> +	status = "okay";
> +};
> +
>  &eth0 {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&gmac0_rgmii_0_cfg>, <&gmac0_phy_0_cfg>;
> @@ -221,3 +226,11 @@ hub@1 {
>  &usb2_phy {
>  	status = "okay";
>  };
> +
> +&usb3d_u2phy {
> +	status = "okay";
> +};
> +
> +&usb3d {
> +	status = "okay";
> +};
> diff --git a/arch/riscv/boot/dts/spacemit/k3.dtsi b/arch/riscv/boot/dts/spacemit/k3.dtsi
> index 19fc9b49668e..82c9e2da82e9 100644
> --- a/arch/riscv/boot/dts/spacemit/k3.dtsi
> +++ b/arch/riscv/boot/dts/spacemit/k3.dtsi
> @@ -7,6 +7,7 @@
>  #include <dt-bindings/clock/spacemit,k3-clocks.h>
>  #include <dt-bindings/reset/spacemit,k3-resets.h>
>  #include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/phy/phy.h>
>  
>  /dts-v1/;
>  
> @@ -438,6 +439,47 @@ soc: soc {
>  		dma-noncoherent;
>  		ranges;
>  
> +		usb3d: usb@81a00000 {
> +			compatible = "spacemit,k3-dwc3";
> +			reg = <0x0 0x81a00000 0x0 0x10000>;
> +			interrupts = <149 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-parent = <&saplic>;
> +			clocks = <&syscon_apmu CLK_APMU_USB3_PORTD_BUS>;
> +			clock-names = "usbdrd30";
> +			resets = <&syscon_apmu RESET_APMU_USB3_D_AHB>,
> +				 <&syscon_apmu RESET_APMU_USB3_D_VCC>,
> +				 <&syscon_apmu RESET_APMU_USB3_D_PHY>;
> +			reset-names = "ahb", "vcc", "phy";
> +			phys = <&usb3d_u2phy>,
> +			       <&combophy 4 PHY_TYPE_USB3>;
> +			phy-names = "usb2-phy", "usb3-phy";
> +			phy_type = "utmi";
> +			snps,dis_enblslpm_quirk;
> +			snps,dis_u2_susphy_quirk;
> +			snps,dis_u3_susphy_quirk;
> +			snps,dis-del-phy-power-chg-quirk;
> +			snps,dis-tx-ipgap-linecheck-quirk;
> +			snps,parkmode-disable-ss-quirk;
> +			dr_mode = "host";
> +			status = "disabled";
> +		};
> +
> +		usb3d_u2phy: phy@81b00000 {
> +			compatible = "spacemit,k3-usb2-phy";
> +			reg = <0x0 0x81b00000 0x0 0x200>;
> +			clocks = <&syscon_apmu CLK_APMU_USB2_BUS>;

This should be CLK_APMU_USB3_PORTD_BUS.

I am also not sure you want to declare the USB3 PHY in k3.dtsi. I think
it should be defined at the board level, as other boards than the k3 
Pico ITX might decide to keep this controller as USB 2 only and use the 
combo PHY for PCIe.

-- 
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
aurelien@aurel32.net                     http://aurel32.net

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Re: [PATCH 2/2] riscv: dts: spacemit: k3: Add PCIe device node

[Inochi Amaoto]

On Mon, Jul 13, 2026 at 10:04:09AM -0500, Anirudh Srinivasan wrote:
> Hi Inochi,
> 
> On Sun, Jul 12, 2026 at 11:19 PM Inochi Amaoto <inochiama@gmail.com> wrote:
> >
> > On Sun, Jul 12, 2026 at 11:13:07PM -0500, Anirudh Srinivasan wrote:
> > > Hi Inochi,
> > >
> > > On Thu, Jul 09, 2026 at 12:04:14PM +0800, Inochi Amaoto wrote:
> > > > Add all PCIe device node for Spacemit K3.
> > > >
> > > > Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
> > > > ---
> > > >  arch/riscv/boot/dts/spacemit/k3-pico-itx.dts |  38 ++++
> > > >  arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi |  33 ++++
> > > >  arch/riscv/boot/dts/spacemit/k3.dtsi         | 195 +++++++++++++++++++
> > > >  3 files changed, 266 insertions(+)
> > > >
> > >
> > > I see some warnings printed during probe
> > >
> > > [   10.842955] r8169 0002:01:00.0: of_irq_parse_pci: failed with rc=-22
> > >
> > > [   10.937754] rtw89_8852be 0004:01:00.0: of_irq_parse_pci: failed with rc=-22
> > >
> >
> > This is an expected error because the driver does not support INTx
> > but the hardware claims it supports. Since the vendor does not want
> > to support it, so there is no way for the upstreamer to add this.
> 
> Are you saying that the hardware advertises support for INTx, but
> spacemit hasn't provided a driver that uses it?
> 
> Is there a way to let the driver know to not try setting up legacy
> interrupts then? It seems like it's trying to do that now, and failing
> to find interrupts node in the DT.
> 

IIRC it is hard to do this, this is more like a quirk for the spacemit
PCIe controllers.

Regards,
Inochi

> >
> > > I see that all the 3 rc nodes are missing an interrupts node and an
> > > interrupt parent (saplic). The vendor DT seems to have this. Not sure if
> > > this is related.
> > >
> > > The 10G ethernet probes fine, but the wifi card fails to probe. Seems
> > > like the card is trying to request 32 bit DMA addresses and we're
> > > failing cause we have 64 bit memory only.
> > > The vendor kernel seems to have a patch to enable 36 bit DMA in
> > > the rtw89 driver. That'll probably fix this.
> > >
> >
> > This warning is also found on my test, it is not related to
> > the PCIe driver, but a lack of the RTL phy driver. :(
> >
> > You may also noticed a bad performance on this 10G ethernet,
> > it is caused by the single queue used by the RTL driver.
> > IIRC, even 9800 X3D can not achieve the max speed.
> 
> I don't have the ability to test the 10G NIC unfortunately :(
> 
> Regards
> Anirudh Srinivasan
> 
> >
> > Regards,
> > Inochi
> >

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