The Parade PS8830 is a Type-C multi-protocol retimer that is controlled via I2C. It provides altmode and orientation handling and usually sits between the Type-C port and the PHY. It is currently used alongside Qualcomm Snapdragon X Elite SoCs on quite a few laptops already. This new driver adds support for the following 3 modes: - DP 4lanes (pin assignments C and E) - DP 2lanes + USB3 (pin assignment D) - USB3 This retimer is a LTTPR (Link-Training Tunable PHY Repeater) which means it can support link training from source to itself. This means that the DP driver needs to be aware of the repeater presence and to handle the link training accordingly. This is currently missing from msm dp driver, but there is already effort going on to add it. Once done, full external DP will be working on all X1E laptops that make use of this retimer. Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx> --- Changes in v2: - Addressed all comments from Johan and Konrad. - Reworked the handling of the vregs so it would be more cleaner. Dropped the usage of bulk regulators API and handled them separately. Also discribed all regulators according to data sheet. - Added all delays according to data sheet. - Fixed coldplug (on boot) orientation detection. - Didn't pick Krzysztof's R-b tag because the bindings changed w.r.t supplies. - Link to v1: https://lore.kernel.org/r/20240829-x1e80100-ps8830-v1-0-bcc4790b1d45@xxxxxxxxxx --- Abel Vesa (2): dt-bindings: usb: Add Parade PS8830 Type-C retimer bindings usb: typec: Add support for Parade PS8830 Type-C Retimer .../devicetree/bindings/usb/parade,ps8830.yaml | 129 +++++++ drivers/usb/typec/mux/Kconfig | 10 + drivers/usb/typec/mux/Makefile | 1 + drivers/usb/typec/mux/ps8830.c | 424 +++++++++++++++++++++ 4 files changed, 564 insertions(+) --- base-commit: c02d24a5af66a9806922391493205a344749f2c4 change-id: 20240521-x1e80100-ps8830-d5ccca95b557 Best regards, -- Abel Vesa <abel.vesa@xxxxxxxxxx>
