This patch adds support for STUSB1600 USB Type-C port controller, used on
I2C4 on stm32mp15xx-dkx.
The default configuration on this board, on Type-C connector, is:
- Dual Power Role (DRP), so set power-role to "dual";
- Vbus limited to 500mA, so set typec-power-opmode to "default" (it means
500mA in USB 2.0).
typec-power-opmode is used to reconfigure the STUSB1600 advertising of
current capability when its NVM is not in line with the board layout.
On stm32mp15xx-dkx, Vbus power source of STUSB1600 is 5V_VIN. So power
operation mode depends on the power supply used. To avoid any power
issues, it is better to limit Vbus to 500mA on this board.
ALERT# is the interrupt pin of STUSB1600. It needs an external pull-up, and
signal is active low.
USB OTG controller ID and Vbus signals are not connected on stm32mp15xx-dkx
boards, so disconnection are not detected.
Without DWC2 usb-role-switch:
- if you unplug the USB cable from the Type-C port, you have to manually
disconnect the USB gadget:
echo disconnect > /sys/devices/platform/soc/49000000.usb-otg/udc/49000000.usb-otg/soft_connect
- Then you can plug the USB cable again in the Type-C port, and manually
reconnect the USB gadget:
echo connect > /sys/devices/platform/soc/49000000.usb-otg/udc/49000000.usb-otg/soft_connect
With DWC2 usb-role-switch, USB gadget is dynamically disconnected or connected.
Signed-off-by: Amelie Delaunay <[email protected]>
---
arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 7 ++++++
arch/arm/boot/dts/stm32mp15xx-dkx.dtsi | 30 ++++++++++++++++++++++++
2 files changed, 37 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
index d84686e00370..d2e9e7ac3336 100644
--- a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
@@ -1591,6 +1591,13 @@
};
};
+ stusb1600_pins_a: stusb1600-0 {
+ pins {
+ pinmux = <STM32_PINMUX('I', 11, ANALOG)>;
+ bias-pull-up;
+ };
+ };
+
uart4_pins_a: uart4-0 {
pins1 {
pinmux = <STM32_PINMUX('G', 11, AF6)>; /* UART4_TX */
diff --git a/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi b/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi
index 93398cfae97e..ff324b151609 100644
--- a/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi
+++ b/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi
@@ -238,6 +238,30 @@
/delete-property/dmas;
/delete-property/dma-names;
+ stusb1600@28 {
+ compatible = "st,stusb1600";
+ reg = <0x28>;
+ interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
+ interrupt-parent = <&gpioi>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&stusb1600_pins_a>;
+ status = "okay";
+ vdd-supply = <&vin>;
+
+ connector {
+ compatible = "usb-c-connector";
+ label = "USB-C";
+ power-role = "dual";
+ typec-power-opmode = "default";
+
+ port {
+ con_usbotg_hs_ep: endpoint {
+ remote-endpoint = <&usbotg_hs_ep>;
+ };
+ };
+ };
+ };
+
pmic: stpmic@33 {
compatible = "st,stpmic1";
reg = <0x33>;
@@ -648,6 +672,12 @@
phy-names = "usb2-phy";
usb-role-switch;
status = "okay";
+
+ port {
+ usbotg_hs_ep: endpoint {
+ remote-endpoint = <&con_usbotg_hs_ep>;
+ };
+ };
};
&usbphyc {
--
2.17.1