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

Anand Moon
2023-01-21T17:57:23Z

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@linaro.org>
Signed-off-by: Anand Moon <linux.amoon@gmail.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