On 03.11.2020 15:02, Marek Szyprowski wrote:
> MicroUSB port on OdroidU3+ boards can operate both as peripheral or as
> host port. Till now it was configured as pheriperal only port, but it
> turned out that the DWC2 driver code already handles everything needed to
> support USB role-switch, so switch it to dual-role (OTG) mode. This has
> no effect on OdroidU3 (with 'plus') and OdroidX2, which doesn't have USB
/s/with/without
> needed ID pin and VBUS wiring. Those will still operate correctly in
> pheriperal mode only.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
> arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 1 -
> arch/arm/boot/dts/exynos4412-odroidu3.dts | 14 ++++++++++++++
> arch/arm/boot/dts/exynos4412-odroidx.dts | 4 ++++
> 3 files changed, 18 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> index 2a6f5b1d7645..2b20d9095d9f 100644
> --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> @@ -255,7 +255,6 @@
> };
>
> &hsotg {
> - dr_mode = "peripheral";
> status = "okay";
> vusb_d-supply = <&ldo15_reg>;
> vusb_a-supply = <&ldo12_reg>;
> diff --git a/arch/arm/boot/dts/exynos4412-odroidu3.dts b/arch/arm/boot/dts/exynos4412-odroidu3.dts
> index b8549d846f86..746c2a99a83c 100644
> --- a/arch/arm/boot/dts/exynos4412-odroidu3.dts
> +++ b/arch/arm/boot/dts/exynos4412-odroidu3.dts
> @@ -21,6 +21,15 @@
> reg = <0x40000000 0x7FF00000>;
> };
>
> + vbus_otg_reg: voltage-regulator-1 {
> + compatible = "regulator-fixed";
> + regulator-name = "VBUS_VDD_5.0V";
> + regulator-min-microvolt = <5000000>;
> + regulator-max-microvolt = <5000000>;
> + gpio = <&gpl2 0 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + };
> +
> leds {
> compatible = "gpio-leds";
> led1 {
> @@ -105,6 +114,11 @@
> phy-names = "hsic0", "hsic1";
> };
>
> +&hsotg {
> + dr_mode = "otg";
> + vbus-supply = <&vbus_otg_reg>;
> +};
> +
> &sound {
> model = "Odroid-U3";
> samsung,audio-widgets =
> diff --git a/arch/arm/boot/dts/exynos4412-odroidx.dts b/arch/arm/boot/dts/exynos4412-odroidx.dts
> index 46381e9097f4..d6ee62bf336c 100644
> --- a/arch/arm/boot/dts/exynos4412-odroidx.dts
> +++ b/arch/arm/boot/dts/exynos4412-odroidx.dts
> @@ -76,6 +76,10 @@
> };
> };
>
> +&hsotg {
> + dr_mode = "peripheral";
> +};
> +
> &mshc_0 {
> vqmmc-supply = <&buck8_reg>;
> };
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
