[U-Boot] [PATCH v3 3/3] rockchip: dts: rk3399-puma: add a 'tsd, usb-port-power' stringlist for USB1

[Philipp Tomsich]

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.tomsich at theobroma-systems.com>
Tested-by: Jakob Unterwurzacher <jakob.unterwurzacher at theobroma-systems.com>

---

Changes in v3: None
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