Commit 71593b20 authored by Anand Moon's avatar Anand Moon Committed by Greg Kroah-Hartman
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arm64: dts: amlogic: 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.

USB hub is combination of USB 2.0 and USB 3.0 root hub so
use peer-hub node to link then.

Signed-off-by: default avatarAnand Moon <linux.amoon@gmail.com>
Link: https://lore.kernel.org/r/20230118044418.875-8-linux.amoon@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 31360c28

arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts

+23 −13
Original line number Diff line number Diff line
@@ -26,20 +26,30 @@ 
	sound {

		model = "ODROID-C4";

	};



	/* USB hub supports both USB 2.0 and USB 3.0 root hub */

	usb-hub {

		dr_mode = "host";

		#address-cells = <1>;

		#size-cells = <0>;



		/* 2.0 hub on port 1 */

		hub_2_0: hub@1 {

			compatible = "usb2109,2817";

			reg = <1>;

			peer-hub = <&hub_3_0>;

			reset-gpios = <&gpio GPIOH_4 GPIO_ACTIVE_LOW>;

			vdd-supply = <&vcc_5v>;

		};



&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";

		/* 3.1 hub on port 4 */

		hub_3_0: hub@2 {

			compatible = "usb2109,817";

			reg = <2>;

			peer-hub = <&hub_2_0>;

			reset-gpios = <&gpio GPIOH_4 GPIO_ACTIVE_LOW>;

			vdd-supply = <&vcc_5v>;

		};

	};

};