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ARM: dts: stm32: add STUSB1600 Type-C using I2C4 on stm32mp15xx-dkx

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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 <amelie.delaunay@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
This commit is contained in:
Amelie Delaunay 2020-11-06 17:58:04 +01:00 committed by Alexandre Torgue
parent 70966729b5
commit 83686162c0
2 changed files with 37 additions and 0 deletions
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7
arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
View file

@ -1660,6 +1660,13 @@ pins2 {
};
};
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 */

30
arch/arm/boot/dts/stm32mp15xx-dkx.dtsi
View file

@ -246,6 +246,30 @@ &i2c4 {
/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>;
@ -656,6 +680,12 @@ &usbotg_hs {
phy-names = "usb2-phy";
usb-role-switch;
status = "okay";
port {
usbotg_hs_ep: endpoint {
remote-endpoint = <&con_usbotg_hs_ep>;
};
};
};
&usbphyc {