[PATCH v2 2/2] arm64: dts: rockchip: Fix USB Type-C host mode for Radxa ROCK 5 ITX

[FUKAUMI Naoki]

The Radxa ROCK 5 ITX USB Type-C port supports Dual Role Data and
should also act as a host. However, currently, when acting as a host,
only self-powered devices work.

As a workaround, set the power-role property to "dual" and the
try-power-role property to "sink". (along with related properties)

This allows the port to act as a host, supply power to the port, and
allow bus-powered devices to work.

Note that there is a separate known issue where USB 3.0 SuperSpeed
devices do not work when oriented in reverse. This issue should be
addressed separately. (USB 2.0/1.1 devices work in both orientations)

Fixes: 31390eb8ffbf2 ("arm64: dts: rockchip: add ROCK 5 ITX board")
Signed-off-by: FUKAUMI Naoki <naoki at radxa.com>
---
Changes in v2:
- Refine commit message
---
 arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
index bc8140883de47..1664f85db4aaa 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
@@ -484,9 +484,14 @@ usb_con: connector {
 			compatible = "usb-c-connector";
 			data-role = "dual";
 			label = "USB-C";
-			power-role = "source";
+			op-sink-microwatt = <50000>;
+			/* fusb302 supports PD Rev 2.0 Ver 1.2 */
+			pd-revision = /bits/ 8 <0x2 0x0 0x1 0x2>;
+			power-role = "dual";
+			sink-pdos = <PDO_FIXED(5000, 10, PDO_FIXED_USB_COMM)>;
 			source-pdos =
 				<PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)>;
+			try-power-role = "sink";
 
 			ports {
 				#address-cells = <1>;
-- 
2.43.0