linux-kernel - [PATCH v1 04/11] arm64: dts: amlogic: Used onboard usb hub reset on odroid n2

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Date:   Wed, 28 Dec 2022 10:03:13 +0000
From:   Anand Moon <linux.amoon@...il.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc:     linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 04/11] arm64: dts: amlogic: Used onboard usb hub reset on odroid n2

On Odroid n2 previously use gpio-hog to reset the usb hub,
switch to used on-board usb hub reset to enable the usb hub
and enable power to hub.

Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
 .../dts/amlogic/meson-g12b-odroid-n2.dtsi     | 26 ++++++++++---------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
index 667d2b774924..e5ae885c4008 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
@@ -347,6 +347,20 @@ codec {
 			};
 		};
 	};
+
+	usb {
+		dr_mode = "host";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		hub: hub@1 {
+			/* Genesys Logic GL3523-QFN76 usb hub*/
+			compatible = "genesys,usb5e3,620";
+			reg = <1>;
+			vdd-supply = <&hub_5v>;
+			reset-gpios = <&gpio GPIOH_4 GPIO_ACTIVE_LOW>;
+		};
+	};
 };
 
 &acodec {
@@ -535,18 +549,6 @@ &gpio {
 		"PIN_3",  /* GPIOX_17 */
 		"PIN_5",  /* GPIOX_18 */
 		"PIN_36"; /* GPIOX_19 */
-	/*
-	 * WARNING: The USB Hub on the Odroid-N2 needs a reset signal
-	 * to be turned high in order to be detected by the USB Controller
-	 * This signal should be handled by a USB specific power sequence
-	 * in order to reset the Hub when USB bus is powered down.
-	 */
-	hog-0 {
-		gpio-hog;
-		gpios = <GPIOH_4 GPIO_ACTIVE_HIGH>;
-		output-high;
-		line-name = "usb-hub-reset";
-	};
 };
 
 &hdmi_tx {
-- 
2.38.1