[PATCH] arm64: dts: rockchip: Enable USB host0 on Kobol Helios64

Igor Velkov via B4 Relay devnull+iav.iav.lv at kernel.org
Sat Oct 10 14:51:50 PDT 2026


From: Igor Velkov <iav at iav.lv>

USB host0 of the RK3399 (USB0_DP/DN) is wired to the USB 2.0 pins of
the M.2 Key-B slot J2. Enable the host port of u2phy0 and the EHCI and
OHCI controllers behind it.

Assisted-by: LLM
Signed-off-by: Igor Velkov <iav at iav.lv>
---
Schematic, sheet 33:
https://wiki.kobol.io/helios64/files/schematics/Helios64_Schematics_Rev1.2.pdf

Tested on mainline: the EHCI and OHCI root hubs come up. The M.2 slot
is empty here, so no device was attached.
---
 arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts b/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts
index 63ad79b4c8ac..ae887806f21d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts
@@ -639,6 +639,15 @@ &tsadc {
 	status = "okay";
 };
 
+&u2phy0 {
+	status = "okay";
+
+	host-port {
+		/* phy for &usb_host0_ehci and &usb_host0_ohci, M.2 slot */
+		status = "okay";
+	};
+};
+
 &u2phy1 {
 	status = "okay";
 
@@ -653,6 +662,14 @@ &uart2 {
 	status = "okay";
 };
 
+&usb_host0_ehci {
+	status = "okay";
+};
+
+&usb_host0_ohci {
+	status = "okay";
+};
+
 &usbdrd3_1 {
 	status = "okay";
 

---
base-commit: d2abcbb905b0e4b2e06b257fa1e5bcf4faa6dbda
change-id: 20261011-b4-helios64-usb-host0-40b3bcc85117

Best regards,
-- 
Igor Velkov <iav at iav.lv>





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