[PATCH 0/2] usb: gpio-sbu-mux: add FUSB340 and enable option for orientation

From: Fabrice Gasnier

Date: Tue Aug 25 2026 - 09:05:57 EST


Add a new compatible for FUSB340. Also mange the enable GPIO, when used as
orientation-switch only.
It is used on STM32MP25 DK boards, as orientation-switch only for
USB SuperSpeed lines on the Type-C connector, the enable GPIO being
connected to the SoC.

- - - - SoC - - - - - - - - - - board - - - - -
| USB-C
+------+ +----------+ | +-+
| |--| USB2PHY |<-----------------HS->|*|
| |--| HS |<-----------------HS->|*|
| | +----------+ | | |
| | | ________ | |
+ dwc3 | +----------+ | / |<-SS->|*|
| | | |<--->/ |<-SS->|*|
| |--| ComboPHY |<---> FUSB340 | | |
| | | SS | | \ __ |<-SS->|*|
+------+ +----------+ | \_en__sw_|<-SS->|*|
| ^ ^ | |
+----------+ | | | ...
[ GPIO ]--------+ |
[ GPIO ]------------+
+----------+ |
- - - - - - - - - - - - - - - - - - - - - - --

This is a subset of STM32MP25 Type-C support [1].

[1] https://lore.kernel.org/all/20260821-ucpd-host-fusb340-v7-2-rfc-v1-0-c5e27cbc0795@xxxxxxxxxxx/

---
Fabrice Gasnier (2):
dt-bindings: usb: gpio-sbu-mux: Add compatible for FUSB340
usb: typec: mux: gpio-sbu: enable when only used for orientation

Documentation/devicetree/bindings/usb/gpio-sbu-mux.yaml | 1 +
drivers/usb/typec/mux/gpio-sbu-mux.c | 7 +++++++
2 files changed, 8 insertions(+)
---
base-commit: 8d3ae59288f1e7d58d76558a6ee96d533bc5019f
change-id: 20260825-usb-fusb340-v1-f060a5f84d3c

Best regards,
--
Fabrice Gasnier <fabrice.gasnier@xxxxxxxxxxx>