linux-kernel - [PATCH v3 3/9] arm64: dts: amlogic: Used onboard usb hub reset on odroid c2

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Message-Id: <20230121175639.12818-4-linux.amoon@gmail.com>
Date:   Sat, 21 Jan 2023 17:56:31 +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,
        Matthias Kaehlcke <mka@...omium.org>,
        Alexander Stein <alexander.stein@...tq-group.com>,
        Johan Hovold <johan@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 3/9] 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.

Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>
Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
v3 - Add rev by Neil.
     droped dr_mode
v2 - drop the vendor name from compatible string.
   - move the hub node to USB controller node.
   - drop the usb_otg_pwr since it only liked to OTG port
         and link p5v0 to the vdd-supply.
---
 .../boot/dts/amlogic/meson-gxbb-odroidc2.dts  | 25 ++++++++-----------
 1 file changed, 10 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..70b10934a811 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
@@ -250,21 +250,6 @@ 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>;
@@ -414,5 +399,15 @@ &usb0 {
 };
 
 &usb1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
 	status = "okay";
+
+	hub@1 {
+		/* Genesys Logic GL852G USB 2.0 hub */
+		compatible = "usb5e3,610";
+		reg = <1>;
+		vdd-supply = <&p5v0>;
+		reset-gpio = <&gpio_ao GPIOAO_4 GPIO_ACTIVE_LOW>;
+	};
 };
-- 
2.38.1