linux-kernel - [PATCH v1 09/11] arm64: dts: meson-sm1-odroid-c4: Used onboard usb hub reset on odroid c4

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Date:   Wed, 28 Dec 2022 10:03:18 +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 09/11] arm64: dts: meson-sm1-odroid-c4: Used onboard usb hub reset on odroid c4

On Odroid c4 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>
---
 .../boot/dts/amlogic/meson-sm1-odroid-c4.dts  | 25 +++++++++----------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts
index 8c30ce63686e..9b8230d6a9da 100644
--- a/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts
@@ -26,20 +26,19 @@ led-blue {
 	sound {
 		model = "ODROID-C4";
 	};
-};
 
-&gpio {
-	/*
-	 * WARNING: The USB Hub on the Odroid-C4 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";
+	usb {
+		dr_mode = "host";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		hub: hub@1 {
+			/* Via lab VL817-Q7 usb hub */
+			compatible = "vialab,usb2109";
+			reg = <1>;
+			vdd-supply = <&usb_pwr_en>;
+			reset-gpios = <&gpio GPIOH_4 GPIO_ACTIVE_LOW>;
+		};
 	};
 };
 
-- 
2.38.1