linux-kernel - [PATCH v2 4/5] arm64: dts: rockchip: disable unrouted USB controllers and PHY on RK3399 Puma

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Message-Id: <20250425-onboard_usb_dev-v2-4-4a76a474a010@thaumatec.com>
Date: Fri, 25 Apr 2025 17:18:09 +0200
From: Lukasz Czechowski <lukasz.czechowski@...umatec.com>
To: Matthias Kaehlcke <mka@...omium.org>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Benjamin Bara <benjamin.bara@...data.com>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>, 
 Klaus Goger <klaus.goger@...obroma-systems.com>
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-rockchip@...ts.infradead.org, 
 Lukasz Czechowski <lukasz.czechowski@...umatec.com>, 
 Quentin Schulz <quentin.schulz@...rry.de>
Subject: [PATCH v2 4/5] arm64: dts: rockchip: disable unrouted USB
 controllers and PHY on RK3399 Puma

From: Quentin Schulz <quentin.schulz@...rry.de>

The u2phy1_host port is the part of the USB PHY1 (namely the
HOST1_DP/DM lanes) which routes directly to the USB2.0 HOST
controller[1]. The other lanes of the PHY are routed to the USB3.0 OTG
controller (dwc3), which we do use.

The HOST1_DP/DM lanes aren't routed on RK3399 Puma so let's simply
disable the USB2.0 controllers and associated part in USB2.0 PHY.

No intended functional change.

[1] https://rockchip.fr/Rockchip%20RK3399%20TRM%20V1.3%20Part2.pdf
    Chapter 2 USB2.0 PHY
Fixes: 2c66fc34e945 ("arm64: dts: rockchip: add RK3399-Q7 (Puma) SoM")
Signed-off-by: Quentin Schulz <quentin.schulz@...rry.de>
Signed-off-by: Lukasz Czechowski <lukasz.czechowski@...umatec.com>
---
 arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi
index dd5a9bca26d1d221607e73071685d5774330d760..5c1162e2f34f9c9786da1f774dffa71adda23dbc 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi
@@ -579,10 +579,6 @@ &u2phy1 {
 	u2phy1_otg: otg-port {
 		status = "okay";
 	};
-
-	u2phy1_host: host-port {
-		status = "okay";
-	};
 };
 
 &usbdrd3_1 {
@@ -616,11 +612,3 @@ hub_3_0: hub@2 {
 		vdd2-supply = <&vcc3v3_sys>;
 	};
 };
-
-&usb_host1_ehci {
-	status = "okay";
-};
-
-&usb_host1_ohci {
-	status = "okay";
-};

-- 
2.43.0