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rockchip: dts: rk3399-puma: release reset of on-module USB3 hub via vbus-gpio

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On the RK3399-Q7, the on-module USB3 hub is held in reset at boot-up
to save power and needs to be woken up using GPIO4A3.

Note that this is not a negated reset-signal (due to a level shifter
being needed for this signal anyway), but a negated enable-signal:
to enable, we need to output LOW (i.e. 0)... so we mark this as an
ACTIVE_LOW signal.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Philipp Tomsich 2017-05-31 18:17:58 +02:00 committed by Simon Glass
parent 4411cd054b
commit 2dd2c011e8
1 changed files with 3 additions and 2 deletions

5
arch/arm/dts/rk3399-puma.dts
View File

@ -124,7 +124,7 @@
};
&dwc3_typec0 {
status = "okay";
status = "disabled";
};
&usb_host1_ehci {
@ -136,6 +136,7 @@
};
&dwc3_typec1 {
rockchip,vbus-gpio = <&gpio4 3 GPIO_ACTIVE_LOW>;
status = "okay";
};
@ -182,7 +183,7 @@
compatible = "spi-flash";
reg = <0>;
spi-max-frequency = <5000000>;
spi-max-frequency = <49500000>;
spi-cpol;
spi-cpha;
};