Hi Marek, Do you have time to give a look at this series?
Thanks, Peng On Sun, Jun 21, 2026 at 10:06:36AM +0800, Peng Fan (OSS) wrote: >[V2] Just resend this patchset without >"usb: tcpm: fix inverted poll condition in tcpm_pd_transmit()" > >This series adds TCPCI (Type-C Port Controller Interface) driver support >to U-Boot's TCPM framework and enables runtime USB host/device mode >switching on platforms using DWC3 with Type-C connectors. > >The work is motivated by the NXP i.MX8MP EVK, which has a PTN5110 TCPCI >chip managing a USB Type-C data port. The goal is to support both >"usb start" (host mode, for USB storage) and "ums"/"fastboot" (device >mode, for flashing) on the same Type-C port, switchable at runtime. > >The series breaks down into three logical groups: > >TCPM bugfixes (patches 1-3): > Fix three issues discovered in the upstream TCPM state machine during > PD sink testing with various chargers: > - Inverted poll condition causing transmit to always time out > - Unnecessary hard resets on sink-only ports when source doesn't > respond to capabilities request > - Premature exit from poll loop after SNK_READY, missing source > follow-up messages (Get_Sink_Cap etc.) that trigger hard reset > >TCPCI driver and TCPM API extensions (patches 4-7): > - Lightweight PD negotiation tracing (RAM ring buffer, zero serial > overhead) for debugging charger interop issues > - TCPCI driver for NXP PTN5110 and compatible chips, ported from > the Linux kernel with adaptations for U-Boot's polled model > - New tcpm_setup_host_mode()/tcpm_setup_device_mode() APIs that > configure Type-C CC role and detect cable orientation without > running the full PD state machine -- appropriate for U-Boot's > synchronous, command-driven execution model > - pd-disable connector property support in tcpm_post_probe() to > skip the PD state machine for data-only ports while keeping the > TCPCI driver ops accessible > >DWC3 OTG and board support (patches 8-11): > - board_usb_init()/board_usb_cleanup() hooks in DWC3 generic glue, > called during child probe/remove to allow board-level Type-C > configuration before DWC3 core init > - OTG dual-bind: when dr_mode="otg", bind both dwc3-generic-host > and dwc3-generic-peripheral children; runtime mode switching via > dwc3_otg_deactivate_sibling() which removes the active sibling > before probing the new one > - i.MX8MP EVK board support wiring it all together: TCPCI DT nodes, > board_usb_init using TCPM APIs for CC role setup and SS mux > control, PD sink configuration for the power port > >Tested on NXP i.MX8MP EVK. > >Signed-off-by: Peng Fan <[email protected]> >--- >Changes in v2: >- Drop "usb: tcpm: fix inverted poll condition in tcpm_pd_transmit" > which was sent to list as a separate fix. >- Link to v1: >https://patch.msgid.link/[email protected] > >--- >Peng Fan (9): > usb: tcpm: avoid hard reset for sink-only ports on Source_Cap timeout > usb: tcpm: continue polling after PD negotiation to handle source > messages > usb: tcpm: add lightweight PD negotiation tracing > usb: tcpm: add TCPCI (Type-C Port Controller Interface) driver > usb: tcpm: add setup_host_mode/device_mode/disable_src_vbus APIs > usb: tcpm: skip state machine for pd-disable ports > usb: dwc3: generic: support OTG dual-bind for runtime host/device > switching > board: imx8mp_evk: enable USB PD sink via TCPCI > board: imx8mp_evk: add USB Type-C OTG support with TCPCI > >Ye Li (1): > usb: dwc3: generic: add board_usb_init/cleanup hooks > > arch/arm/dts/imx8mp-evk-u-boot.dtsi | 52 ++- > board/nxp/imx8mp_evk/imx8mp_evk.c | 78 ++++ > configs/imx8mp_evk_defconfig | 3 + > drivers/usb/dwc3/dwc3-generic.c | 73 +++- > drivers/usb/tcpm/Kconfig | 9 + > drivers/usb/tcpm/Makefile | 1 + > drivers/usb/tcpm/tcpci.c | 778 ++++++++++++++++++++++++++++++++++++ > drivers/usb/tcpm/tcpm-internal.h | 40 ++ > drivers/usb/tcpm/tcpm-uclass.c | 87 ++++ > drivers/usb/tcpm/tcpm.c | 46 ++- > include/usb/tcpci.h | 185 +++++++++ > include/usb/tcpm.h | 4 + > 12 files changed, 1350 insertions(+), 6 deletions(-) >--- >base-commit: debaadb75013a6d3706a2137d540bf4660475e3e >change-id: 20260617-tcpci-dwc3-653a5d9c8893 > >Best regards, >-- >Peng Fan <[email protected]> >
