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Message-Id: <20210701022405.10817-13-digetx@gmail.com>
Date: Thu, 1 Jul 2021 05:24:05 +0300
From: Dmitry Osipenko <digetx@...il.com>
To: Thierry Reding <treding@...dia.com>,
Jonathan Hunter <jonathanh@...dia.com>,
Mark Brown <broonie@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Sebastian Reichel <sre@...nel.org>,
Peter Chen <peter.chen@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Felipe Balbi <balbi@...nel.org>,
David Heidelberg <david@...t.cz>
Cc: devicetree@...r.kernel.org, linux-pm@...r.kernel.org,
linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-tegra@...r.kernel.org
Subject: [PATCH v1 12/12] ARM: tegra: nexus7: Enable USB OTG mode
Nexus 7 has OTG-cable microUSB port, enable OTG mode. USB peripheral
devices now can be connected to Nexus 7 using OTG adapter, switching
USB port into host mode.
Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
.../tegra30-asus-nexus7-grouper-common.dtsi | 25 +++++++++++++++++--
1 file changed, 23 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/tegra30-asus-nexus7-grouper-common.dtsi b/arch/arm/boot/dts/tegra30-asus-nexus7-grouper-common.dtsi
index 8bc552b09672..c341e8971b2f 100644
--- a/arch/arm/boot/dts/tegra30-asus-nexus7-grouper-common.dtsi
+++ b/arch/arm/boot/dts/tegra30-asus-nexus7-grouper-common.dtsi
@@ -941,9 +941,29 @@ power_supply: charger@6a {
interrupts = <TEGRA_GPIO(V, 1) IRQ_TYPE_EDGE_BOTH>;
summit,enable-charge-control = <SMB3XX_CHG_ENABLE_PIN_ACTIVE_LOW>;
+ summit,inok-polarity = <SMB3XX_SYSOK_INOK_ACTIVE_LOW>;
summit,enable-usb-charging;
monitored-battery = <&battery_cell>;
+
+ usb_vbus: usb-vbus {
+ regulator-name = "usb_vbus";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ regulator-min-microamp = <750000>;
+ regulator-max-microamp = <750000>;
+
+ /*
+ * SMB347 INOK input pin is connected to PMIC's
+ * ACOK output, which is fixed to ACTIVE_LOW as
+ * long as battery voltage is in a good range.
+ *
+ * Active INOK disables SMB347 output, so polarity
+ * needs to be toggled when we want to get the
+ * output.
+ */
+ summit,needs-inok-toggle;
+ };
};
};
@@ -1017,12 +1037,13 @@ sdmmc4: mmc@...00600 {
usb@...00000 {
compatible = "nvidia,tegra30-udc";
status = "okay";
- dr_mode = "peripheral";
+ dr_mode = "otg";
+ vbus-supply = <&usb_vbus>;
};
usb-phy@...00000 {
status = "okay";
- dr_mode = "peripheral";
+ dr_mode = "otg";
nvidia,hssync-start-delay = <0>;
nvidia,xcvr-lsfslew = <2>;
nvidia,xcvr-lsrslew = <2>;
--
2.30.2
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