[PATCH v2 5/5] roc-pc-plus-rk3399: Enable USB Mass Storage support

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <festevam@nabladev.com>

Configure the USB0 DWC3 controller for peripheral mode and enable the
required USB gadget options to support the U-Boot 'ums' command on the
ROC-RK3399-PC Plus.

The 'ums' command provides a convenient way to expose the on-board eMMC
as a USB Mass Storage device to a host computer, simplifying development,
image installation and recovery without requiring removable media or
network access.

Limit the controller to High-Speed operation by using the USB2 OTG PHY.

Signed-off-by: Fabio Estevam <festevam@nabladev.com>
---
Changes since v1:
- None.

 arch/arm/dts/rk3399-roc-pc-plus-u-boot.dtsi | 7 +++++++
 configs/roc-pc-plus-rk3399_defconfig        | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/arch/arm/dts/rk3399-roc-pc-plus-u-boot.dtsi b/arch/arm/dts/rk3399-roc-pc-plus-u-boot.dtsi
index 7d5af3e234da..f613d75646c3 100644
--- a/arch/arm/dts/rk3399-roc-pc-plus-u-boot.dtsi
+++ b/arch/arm/dts/rk3399-roc-pc-plus-u-boot.dtsi
@@ -7,3 +7,10 @@
 &dc_12v {
 	/delete-property/ vin-supply;
 };
+
+&usbdrd_dwc3_0 {
+	dr_mode = "peripheral";
+	maximum-speed = "high-speed";
+	phys = <&u2phy0_otg>;
+	phy-names = "usb2-phy";
+};
diff --git a/configs/roc-pc-plus-rk3399_defconfig b/configs/roc-pc-plus-rk3399_defconfig
index 4ec2f7d44b5f..f3d78c53e672 100644
--- a/configs/roc-pc-plus-rk3399_defconfig
+++ b/configs/roc-pc-plus-rk3399_defconfig
@@ -2,3 +2,6 @@
 CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3399-roc-pc-plus"
 CONFIG_DEFAULT_FDT_FILE="rockchip/rk3399-roc-pc-plus.dtb"
 CONFIG_SPI_FLASH_XMC=y
+CONFIG_CMD_USB_MASS_STORAGE=y
+# CONFIG_USB_FUNCTION_FASTBOOT is not set
+CONFIG_USB_GADGET_DOWNLOAD=y
-- 
2.43.0