USB1 is connected to the on-module USB 3.0 hub and power to the hub
(actually it's a reset signal, modeled as a fixed regulator, that will
be released) should be enabled only during the first probing of the
device to avoid the hub from entering its low-power mode (where it
tries to attach on a fixed interval, but we always miss the timeslot
when U-Boot has the controller listening).
This adds a 'tsd,usb-port-power' stringlist to enable the
infrastructure in the board-specific usb_hub_reset_devices to find and
control the fixed regulator associated with control of the USB hub.
Signed-off-by: Philipp Tomsich <philipp.toms...@theobroma-systems.com>
---
Changes in v2:
- changed the property name to 'tsd,usb-port-power' to make it a
vendor-specific property
arch/arm/dts/rk3399-puma.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/dts/rk3399-puma.dtsi b/arch/arm/dts/rk3399-puma.dtsi
index 96bd4fe..0f5e6ac 100644
--- a/arch/arm/dts/rk3399-puma.dtsi
+++ b/arch/arm/dts/rk3399-puma.dtsi
@@ -544,6 +544,7 @@
&dwc3_typec1 {
status = "okay";
+ tsd,usb-port-power = "usbhub_enable";
};
&vopb {
--
2.1.4
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