[PATCH v2 3/3] riscv: dts: starfive: jh7110-pine64-star64: force no USB overcurrent

[Icenowy Zheng]

The Star64 board has no GPIOs to indicate USB overcurrent, however the
USB controller would stop to work if the overcurrent_n signal it gets is
low (which means overcurrent situations happening because of the _n).

Use the pin controller to force the overcurrent_n signal to be high in
order to ensure stable behavior of the USB controller.

Signed-off-by: Icenowy Zheng <uwu@xxxxxxxxxx>
---
This patch depends on [1] for including the necessary header file.

[1] https://lore.kernel.org/linux-riscv/20250424060605.638678-1-uwu@xxxxxxxxxx/T/#u

 arch/riscv/boot/dts/starfive/jh7110-pine64-star64.dts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7110-pine64-star64.dts b/arch/riscv/boot/dts/starfive/jh7110-pine64-star64.dts
index 31e825be2065a..4fb522d127e21 100644
--- a/arch/riscv/boot/dts/starfive/jh7110-pine64-star64.dts
+++ b/arch/riscv/boot/dts/starfive/jh7110-pine64-star64.dts
@@ -91,6 +91,13 @@ GPOEN_ENABLE,
 			input-schmitt-disable;
 			slew-rate = <0>;
 		};
+
+		overcurrent-pins {
+			pinmux = <GPIOMUX(PAD_INTERNAL_HIGH,
+					  GPOUT_LOW,
+					  GPOEN_DISABLE,
+					  GPI_SYS_USB_OVERCURRENT)>;
+		};
 	};
 };
 
-- 
2.49.0