sent/20240527-topic-sm8x50-upstream-retimer-broadcast-mode-76520768ac3f-v2
Neil Armstrong
@neil.armstrong
bf9ed271
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usb: typec-mux: broadcast typec state to next mux for ptn36502 & nb7vpq904m retimers
In the Type-C graph, a retimer is usually in between the USB-C
connector and the USB3/DP combo PHY, and this PHY also requires the
USB-C mode events to properly set-up the SuperSpeed Lanes functions
to setup USB3-only, USB3 + DP Altmode or DP Altmode only on the 4 lanes.
Update the nb7vpq904m & ptn36502 retimers to get an optional type-c mux
on the next endpoint, and broadcast the received mode to it.
This makes it possible to support 4-lanes DP altmode on Qualcomm platforms.
To: Heikki Krogerus <heikki.krogerus@linux.intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Luca Weiss <luca.weiss@fairphone.com>
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
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Changes in v2:
- Split out the typec_switch_put() fixes in separates fixes patches
- Link to v1: https://lore.kernel.org/r/20240527-topic-sm8x50-upstream-retimer-broadcast-mode-v1-0-79ec91381aba@linaro.org
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Neil Armstrong (4):
usb: typec-mux: ptn36502: unregister typec switch on probe error and remove
usb: typec-mux: nb7vpq904m: unregister typec switch on probe error and remove
usb: typec-mux: ptn36502: broadcast typec state to next mux
usb: typec-mux: nb7vpq904m: broadcast typec state to next mux
drivers/usb/typec/mux/nb7vpq904m.c | 29 +++++++++++++++++++++++++++--
drivers/usb/typec/mux/ptn36502.c | 33 ++++++++++++++++++++++++++++++---
2 files changed, 57 insertions(+), 5 deletions(-)
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base-commit: ee78a17615ad0cfdbbc27182b1047cd36c9d4d5f
change-id: 20240527-topic-sm8x50-upstream-retimer-broadcast-mode-76520768ac3f
Best regards,