arch/riscv/boot/dts/spacemit/k3-pico-itx.dts | 24 +++++++++++++++++++++ arch/riscv/boot/dts/spacemit/k3.dtsi | 31 ++++++++++++++++++++++++++++ 2 files changed, 55 insertions(+)
There is one USB2.0 host in K3 SoC which use DWC3 IP but only provide
USB2.0 functionality, and with only one USB2 PHY connected.
The USB2.0 controller on Pico-ITX board connects to a Terminus FE1.1 Hub
which fully USB2.0 protocol compliant and provides 4 ports.
Signed-off-by: Yixun Lan <dlan@kernel.org>
---
This series adds devicetree support to enable USB2.0 in Pico-ITX board,
There is a run-time dependency on USB phy[1], Hub[2] and reset[3] patches,
but each series should be quite independent.
For people who interested, I've collected all patches and put a complete
branch here[4].
Currently, the USB phy[1] patch is still waiting for maintainer to
merge.
Link: https://lore.kernel.org/r/20260305-11-k3-usb2-phy-v4-0-15554fb933bc@kernel.org [1]
Link: https://lore.kernel.org/r/20260317-03-usb-hub-fe1-v1-0-71ec3989f5be@kernel.org [2]
Link: https://lore.kernel.org/r/20260314-01-k3-reset-usb-pci-v2-1-9dc0976d524e@kernel.org [3]
Link: https://github.com/spacemit-com/linux/tree/WIP/k3/usb2 [4]
---
Changes in v2:
- separate DT patch out, no code changes
- Link to v1: https://lore.kernel.org/r/20260317-02-k3-usb20-support-v1-0-d89f59062ad4@kernel.org
---
arch/riscv/boot/dts/spacemit/k3-pico-itx.dts | 24 +++++++++++++++++++++
arch/riscv/boot/dts/spacemit/k3.dtsi | 31 ++++++++++++++++++++++++++++
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 4486dc1fe114..b89c1521e664 100644
--- a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
+++ b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
@@ -26,6 +26,14 @@ memory@100000000 {
reg = <0x1 0x00000000 0x4 0x00000000>;
};
+ reg_aux_vcc3v3: regulator-aux-vcc3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "AUX_VCC3V3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
+
reg_aux_vcc5v: regulator-aux-vcc5v {
compatible = "regulator-fixed";
regulator-name = "AUX_VCC5V";
@@ -197,3 +205,19 @@ &uart0 {
pinctrl-0 = <&uart0_0_cfg>;
status = "okay";
};
+
+&usb2_host {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ hub@1 {
+ compatible = "usb1a40,0101";
+ reg = <1>;
+ vdd-supply = <®_aux_vcc3v3>;
+ };
+};
+
+&usb2_phy {
+ status = "okay";
+};
diff --git a/arch/riscv/boot/dts/spacemit/k3.dtsi b/arch/riscv/boot/dts/spacemit/k3.dtsi
index 815debd16409..9eb2ff07218a 100644
--- a/arch/riscv/boot/dts/spacemit/k3.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k3.dtsi
@@ -438,6 +438,37 @@ soc: soc {
dma-noncoherent;
ranges;
+ usb2_host: usb@c0a00000 {
+ compatible = "spacemit,k3-dwc3";
+ reg = <0x0 0xc0a00000 0x0 0x10000>;
+ clocks = <&syscon_apmu CLK_APMU_USB2_BUS>;
+ clock-names = "usbdrd30";
+ resets = <&syscon_apmu RESET_APMU_USB2_AHB>,
+ <&syscon_apmu RESET_APMU_USB2_VCC>,
+ <&syscon_apmu RESET_APMU_USB2_PHY>;
+ reset-names = "ahb", "vcc", "phy";
+ interrupts = <105 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-parent = <&saplic>;
+ phys = <&usb2_phy>;
+ phy-names = "usb2-phy";
+ phy_type = "utmi";
+ snps,dis_enblslpm_quirk;
+ snps,dis_u2_susphy_quirk;
+ snps,dis-del-phy-power-chg-quirk;
+ snps,dis-tx-ipgap-linecheck-quirk;
+ dr_mode = "host";
+ maximum-speed = "high-speed";
+ status = "disabled";
+ };
+
+ usb2_phy: phy@c0a20000 {
+ compatible = "spacemit,k3-usb2-phy";
+ reg = <0x0 0xc0a20000 0x0 0x200>;
+ clocks = <&syscon_apmu CLK_APMU_USB2_BUS>;
+ #phy-cells = <0>;
+ status = "disabled";
+ };
+
eth0: ethernet@cac80000 {
compatible = "spacemit,k3-dwmac", "snps,dwmac-5.40a";
reg = <0x0 0xcac80000 0x0 0x2000>;
---
base-commit: af62a095eb0c3359d477b55ef72d2afd94c83c8f
change-id: 20260330-02-k3-usb20-dts-670aeb20e2d3
Best regards,
--
Yixun Lan <dlan@kernel.org>Hi Yixun, kernel test robot noticed the following build errors: [auto build test ERROR on af62a095eb0c3359d477b55ef72d2afd94c83c8f] url: https://github.com/intel-lab-lkp/linux/commits/Yixun-Lan/riscv-dts-spacemit-k3-Add-USB2-0-support/20260331-231732 base: af62a095eb0c3359d477b55ef72d2afd94c83c8f patch link: https://lore.kernel.org/r/20260330-02-k3-usb20-dts-v2-1-46af262fb4a9%40kernel.org patch subject: [PATCH v2] riscv: dts: spacemit: k3: Add USB2.0 support config: riscv-randconfig-002-20260401 (https://download.01.org/0day-ci/archive/20260401/202604010550.sTNDXe0k-lkp@intel.com/config) compiler: riscv32-linux-gcc (GCC) 11.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260401/202604010550.sTNDXe0k-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202604010550.sTNDXe0k-lkp@intel.com/ All errors (new ones prefixed by >>): Lexical error: arch/riscv/boot/dts/spacemit/k3.dtsi:446.27-46 Unexpected 'RESET_APMU_USB2_AHB' Lexical error: arch/riscv/boot/dts/spacemit/k3.dtsi:447.20-39 Unexpected 'RESET_APMU_USB2_VCC' Lexical error: arch/riscv/boot/dts/spacemit/k3.dtsi:448.20-39 Unexpected 'RESET_APMU_USB2_PHY' >> FATAL ERROR: Syntax error parsing input tree -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
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