linux-kernel - [PATCH v1 03/11] arm64: dts: amlogic: Used onboard usb hub reset on odroid c2

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Message-Id: <20221228100321.15949-4-linux.amoon@gmail.com>
Date:   Wed, 28 Dec 2022 10:03:12 +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 03/11] arm64: dts: amlogic: Used onboard usb hub reset on odroid c2

On Odroid c2 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-gxbb-odroidc2.dts  | 29 +++++++++----------
 1 file changed, 14 insertions(+), 15 deletions(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
index 201596247fd9..3d3e61cf65a8 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
@@ -208,6 +208,20 @@ codec-0 {
 			};
 		};
 	};
+
+	usb {
+		dr_mode = "host";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		hub@1 {
+			/* Genesys Logic GL852G-OHG usb hub */
+			compatible = "genesys,usb5e3,610";
+			reg = <1>;
+			vdd-supply = <&usb_otg_pwr>;
+			reset-gpio = <&gpio_ao GPIOAO_4 GPIO_ACTIVE_LOW>;
+		};
+	};
 };
 
 &aiu {
@@ -250,21 +264,6 @@ eth_phy0: ethernet-phy@0 {
 	};
 };
 
-&gpio_ao {
-	/*
-	 * WARNING: The USB Hub on the Odroid-C2 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 = <GPIOAO_4 GPIO_ACTIVE_HIGH>;
-		output-high;
-		line-name = "usb-hub-reset";
-	};
-};
-
 &hdmi_tx {
 	status = "okay";
 	pinctrl-0 = <&hdmi_hpd_pins>, <&hdmi_i2c_pins>;
-- 
2.38.1