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[v4,0/2] typec: add support for the ON Semiconductor nb7vpq904m Type-C Linear Redriver

Message ID 20230601-topic-sm8x50-upstream-redriver-v4-0-91d5820f3a03@linaro.org (mailing list archive)
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Series typec: add support for the ON Semiconductor nb7vpq904m Type-C Linear Redriver | expand

Message

Neil Armstrong June 15, 2023, 10:32 a.m. UTC 
Add support for the ON Semiconductor NB7VPQ904M Type-C USB SuperSpeed
and DisplayPort ALT Mode Linear Redriver chip found on some devices
with a Type-C port.

The redriver compensates ultra High-Speeed DisplayPort and USB
Super Speed signal integrity losses mainly due to PCB & transmission
cables.

The redriver doesn't support SuperSpeed lines swapping, but
can support Type-C SBU lines swapping.

Support is designed as a Type-C Switch and Retimer, and can propagate
orientation settings to the source endpoint, which is usually
a Super Speed PHY which does the data lanes swapping.

Bindings are added first and can handle the fact data lanes pairs
can be swapped on the PCB.

Compile-time dependencies:
- svid removal at [1]

[1] https://lore.kernel.org/all/20230526131434.46920-1-heikki.krogerus@linux.intel.com/

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
Changes in v4:
- Protect bridge setup with CONFIG_OF & CONFIG_DRM_PANEL_BRIDGE
- Link to v3: https://lore.kernel.org/r/20230601-topic-sm8x50-upstream-redriver-v3-0-988c560e2195@linaro.org

Changes in v3:
- Include bitfield.h
- Use correct -EOPNOTSUPP
- Correct nb7vpq904m_sw_set line wrapping
- Link to v2: https://lore.kernel.org/r/20230601-topic-sm8x50-upstream-redriver-v2-0-dda89b22b1c0@linaro.org

Changes in v2:
- Switch to "retimer" infrastructure
- Slight style fixups after switch to retimer
- Bindings updates (did not keep Reviewed-by tag for those reasons)
 - Update maintainer, was using Bjorn with invalid email
 - Fixed swapped lanes mapping
 - Switched to retimer-switch
 - Fixed i2c top node in example
- Link to v1: https://lore.kernel.org/r/20230601-topic-sm8x50-upstream-redriver-v1-0-6ad21094ff6f@linaro.org

---
Dmitry Baryshkov (1):
      usb: typec: add support for the nb7vpq904m Type-C Linear Redriver

Neil Armstrong (1):
      dt-bindings: usb: add ON Semiconductor nb7vpq904m Type-C Linear Redriver bindings

 .../devicetree/bindings/usb/onnn,nb7vpq904m.yaml   | 141 ++++++
 drivers/usb/typec/mux/Kconfig                      |   8 +
 drivers/usb/typec/mux/Makefile                     |   1 +
 drivers/usb/typec/mux/nb7vpq904m.c                 | 529 +++++++++++++++++++++
 4 files changed, 679 insertions(+)
---
base-commit: ac9a78681b921877518763ba0e89202254349d1b
change-id: 20230601-topic-sm8x50-upstream-redriver-6e261edd5cb4

Best regards,