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

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>

diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
index e595e10..20a59e8 100644 (file)
--- a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
@@ -1660,6 +1660,13 @@
                };
        };
 
+       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 4e74e55..89c0e1d 100644 (file)
--- a/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi
+++ b/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi
@@ -246,6 +246,30 @@
        /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>;
@@ -656,6 +680,12 @@
        phy-names = "usb2-phy";
        usb-role-switch;
        status = "okay";
+
+       port {
+               usbotg_hs_ep: endpoint {
+                       remote-endpoint = <&con_usbotg_hs_ep>;
+               };
+       };
 };
 
 &usbphyc {