The USB VBUS supply for the type-A port is enabled via a GPIO regulator.
This is incorrectly modelled in Linux where only the PCIe dependency is
expressed. Add a U-Boot specific dtsi snippet so that this supply will
get enabled when initialising USB.

Signed-off-by: Caleb Connolly <caleb.conno...@linaro.org>
---
 arch/arm/dts/sdm845-db845c-u-boot.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/dts/sdm845-db845c-u-boot.dtsi 
b/arch/arm/dts/sdm845-db845c-u-boot.dtsi
new file mode 100644
index 000000000000..3c83e21251c4
--- /dev/null
+++ b/arch/arm/dts/sdm845-db845c-u-boot.dtsi
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/* This GPIO must be turned on to enable the 5v VBUS
+ * supply on the USB port.
+ */
+&usb_2_dwc3 {
+       vbus-supply = <&pcie0_3p3v_dual>;
+};

-- 
2.44.0

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