Commit 83686162 authored Nov 06, 2020 by Amelie Delaunay Committed by Alexandre Torgue Nov 26, 2020

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>

parent 70966729

arch/arm/boot/dts/stm32mp15-pinctrl.dtsi

+7 −0

Original line number	Diff line number	Diff line
		@@ -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 */

arch/arm/boot/dts/stm32mp15xx-dkx.dtsi

+30 −0

Original line number	Diff line number	Diff line
		@@ -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 {