[PATCH v2 0/5] Add HUSB311 Type-C controller
From: Alexey Charkov <hidden>
Date: 2026-03-17 18:08:10
Also in:
linux-devicetree, linux-rockchip, linux-usb, lkml
HUSB311 is a drop-in replacement for RT1711H, used in Rockchip RK3576 EVB1 board and some other boards closely following the reference schematic. The existing RT1711H driver seems to work fine with HUSB311, and publicly available documentation does not provide enough information for HUSB311 to identify any meaningful differences, so this series wires up the existing driver to treat HUSB311 in the same way it treats RT1711H, by the way of introducing fallback compatibles in the binding and removing unnecessary VID/PID/DID checks from the driver. Note that patches 2 and 4 are on top of commits by Yanshen Cao which are currently in next but not in master. Maybe they can be squashed in full or in part to reduce churn, if we agree on using fallback compatibles. From what I can tell, ET7304 can also be used with a fallback compatible alone and without driver changes once VID/PID/DID checks are removed (I don't see it used in any DTS in either mainline or next yet, though) This also enables a bare-bones DT node for HUSB311 on RK3576 EVB1, but currently misses the connections graph for the USB SS and SBU lines, as those might require the USBDP PHY ports schema to be updated first for proper DP AltMode support as indicated by Sebastian. Signed-off-by: Alexey Charkov <redacted> --- Changes in v2: - Changed the binding to use fallback compatibles (thanks Conor for the suggestion) - Rebased on top of recent next, thus also adjusted the binding for ET7304 to fall back to RT1715. There are no in-tree DT users yet - Removed the VID/PID/DID checks altogether instead of endlessly multiplying the list of matches for new clones (thanks Conor for the suggestion) - Link to v1: https://lore.kernel.org/r/20260311-husb311-v1-0-f25bcb58cff7@flipper.net (local) --- Alexey Charkov (5): dt-bindings: vendor-prefixes: Add Hynetek Semiconductor Co., Ltd. dt-bindings: usb: richtek,rt1711h: Switch ETEK ET7304 to use a fallback compatible dt-bindings: usb: richtek,rt1711h: Add Hynetek HUSB311 usb: typec: tcpci_rt1711h: Drop unnecessary VID/PID/DID checks arm64: dts: rockchip: Add HUSB311 Type-C controller on RK3576 EVB1 .../devicetree/bindings/usb/richtek,rt1711h.yaml | 16 ++++-- .../devicetree/bindings/vendor-prefixes.yaml | 2 + arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts | 20 ++++++++ drivers/usb/typec/tcpm/tcpci_rt1711h.c | 59 +--------------------- 4 files changed, 36 insertions(+), 61 deletions(-) --- base-commit: 95c541ddfb0815a0ea8477af778bb13bb075079a change-id: 20260115-husb311-291bbb1a7776 Best regards, -- Alexey Charkov [off-list ref]