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arm64: dts: amlogic: Used onboard usb hub reset on odroid c4

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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: Anand Moon <linux.amoon@gmail.com>
Link: https://lore.kernel.org/r/20230118044418.875-8-linux.amoon@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Anand Moon 2023-01-18 04:44:15 +00:00 committed by Greg Kroah-Hartman
parent 31360c28df
commit 71593b2020
1 changed files with 23 additions and 13 deletions
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36
arch/arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts
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@ -26,20 +26,30 @@
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 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>;
};
/* 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>;
};
};
};