linux-kernel - [PATCH 5.5 144/170] ARM: dts: sun8i-a83t-tbs-a711: Fix USB OTG mode detection

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Date:   Tue, 31 Mar 2020 10:59:18 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ondrej Jirman <megous@...ous.com>,
        Maxime Ripard <maxime@...no.tech>
Subject: [PATCH 5.5 144/170] ARM: dts: sun8i-a83t-tbs-a711: Fix USB OTG mode detection

From: Ondrej Jirman <megous@...ous.com>

commit b642d4825441bf30c72b72deb739bd2d5f53af08 upstream.

USB-ID signal has a pullup on the schematic, but in reality it's not
pulled up, so add a GPIO pullup. And we also need a usb0_vbus_power-supply
for VBUS detection.

This fixes OTG mode detection and charging issues on TBS A711 tablet.
The issues came from ID pin reading 0, causing host mode to be enabled,
when it should not be, leading to DRVVBUS being enabled, which disabled
the charger.

Fixes: f2f221c7810b824e ("ARM: dts: sun8i: a711: Enable USB OTG")
Signed-off-by: Ondrej Jirman <megous@...ous.com>
Signed-off-by: Maxime Ripard <maxime@...no.tech>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
+++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
@@ -498,7 +498,8 @@
 };
 
 &usbphy {
-	usb0_id_det-gpios = <&pio 7 11 GPIO_ACTIVE_HIGH>; /* PH11 */
+	usb0_id_det-gpios = <&pio 7 11 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>; /* PH11 */
+	usb0_vbus_power-supply = <&usb_power_supply>;
 	usb0_vbus-supply = <&reg_drivevbus>;
 	usb1_vbus-supply = <&reg_vmain>;
 	usb2_vbus-supply = <&reg_vmain>;