ARM: dts: exynos: Enable DWC2 dual-role support on OdroidU3+ boards

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 (without 'plus') and OdroidX2, which doesn't have
USB needed ID pin and VBUS wiring. Those will still operate correctly in
pheriperal mode only.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Link: https://lore.kernel.org/r/20201103140214.21690-1-m.szyprowski@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
index 1ca9d8b5f868b87dafe2566e5aeba03ddd8c4cbb..4a67390426b6b4f9a0990a1e1089cf09882d8719 100644 (file)
--- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
+++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
@@ -256,7 +256,6 @@
 };
 
 &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 b8549d846f86ec4fdc874ca5e07a0a6c2677beb0..3bc83d63de6bd45ef1930bc9a9175e4a233cee63 100644 (file)
--- 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: 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 46381e9097f4319940fd0e10106aebfaaa297827..d6ee62bf336c059891e5b4a40d09543b481725c3 100644 (file)
--- 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>;
 };