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| author |   Amelie Delaunay <amelie.delaunay@st.com> | 2020-11-06 17:58:04 +0100 |
|---|---|---|
| committer |   Alexandre Torgue <alexandre.torgue@foss.st.com> | 2020-11-26 14:42:41 +0100 |
| commit | 83686162c0eb9d94dcab5d6a4e34fc545c331c63 (patch) | |
| tree | 0a3b72c21facd9ad350dc4438f61d92532cd3571 /arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | |
| parent | dt-bindings: usb: Add DT bindings for STUSB160x Type-C controller (diff) | |
| download | wireguard-linux-83686162c0eb9d94dcab5d6a4e34fc545c331c63.tar.xz wireguard-linux-83686162c0eb9d94dcab5d6a4e34fc545c331c63.zip | |
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>
Diffstat (limited to 'arch/arm/boot/dts/stm32mp15-pinctrl.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi index e595e103bcbd..20a59e8f7a33 100644 --- 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 */ |