linux-kernel - [PATCH 3/3] arm64: dts: rockchip: enable usb hub on the radxa rock3 model a

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Date:   Mon, 25 Apr 2022 15:35:02 +0200
From:   Michael Riesch <michael.riesch@...fvision.net>
To:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Michael Riesch <michael.riesch@...fvision.net>,
        Liang Chen <cl@...k-chips.com>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Frattaroli <frattaroli.nicolas@...il.com>,
        Frank Wunderlich <frank-w@...lic-files.de>
Subject: [PATCH 3/3] arm64: dts: rockchip: enable usb hub on the radxa rock3 model a

One USB 2.0 host port on the Radxa ROCK3 Model A is connected to the
SoC via a hub. Introduce a voltage regulator to enable this USB hub.

Signed-off-by: Michael Riesch <michael.riesch@...fvision.net>
---
 arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
index d7e2bc96fde7..75bc2824764f 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
@@ -97,6 +97,17 @@ vcc5v0_usb_host: vcc5v0-usb-host {
 		vin-supply = <&vcc5v0_usb>;
 	};
 
+	vcc5v0_usb_hub: vcc5v0-usb-hub {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio0 RK_PD5 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&vcc5v0_usb_hub_en>;
+		regulator-name = "vcc5v0_usb_hub";
+		regulator-always-on;
+		vin-supply = <&vcc5v0_usb>;
+	};
+
 	vcc5v0_usb_otg: vcc5v0-usb-otg {
 		compatible = "regulator-fixed";
 		enable-active-high;
@@ -436,6 +447,9 @@ usb {
 		vcc5v0_usb_host_en: vcc5v0_usb_host_en {
 			rockchip,pins = <0 RK_PA6 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
+		vcc5v0_usb_hub_en: vcc5v0_usb_hub_en {
+			rockchip,pins = <0 RK_PD5 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
 		vcc5v0_usb_otg_en: vcc5v0_usb_otg_en {
 			rockchip,pins = <0 RK_PA5 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
-- 
2.30.2