[PATCH v2 3/9] arm64: dts: amlogic: Used onboard usb hub reset on odroid c2
Neil Armstrong
neil.armstrong at linaro.org
Wed Jan 18 00:27:01 PST 2023
On 18/01/2023 05:44, Anand Moon wrote:
> 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 at gmail.com>
> ---
> 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 | 26 ++++++++-----------
> 1 file changed, 11 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..01356437a077 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 at 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 +399,16 @@ &usb0 {
> };
>
> &usb1 {
> + dr_mode = "host";
> + #address-cells = <1>;
> + #size-cells = <0>;
> status = "okay";
> +
> + hub at 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>;
> + };
> };
Reviewed-by: Neil Armstrong <neil.armstrong at linaro.org>
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