[v2,0/3] usb: ChipIdea: add Nuvoton NPCM UDC support

Message

Tomer Maimon Sept. 27, 2023, 9:55 a.m. UTC

This patch set add USB device controller for the NPCM Baseboard
Management Controllers (BMC).

NPCM UDC driver is a part of the USB ChipIdea driver.

Adding CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS flag to modify the vbus_active
parameter to active in case the ChipIdea USB IP role is device-only and
there is no otgsc register.

BMC NPCM7XX and BMC NPCM8XX has ten identical NPCM UDC modules,

The NPCM UDC were tested on NPCM845 evaluation board.

Addressed comments from:
 - Rob Herring : https://www.spinics.net/lists/linux-usb/msg246811.html
 - Krzysztof Kozlowski : https://www.spinics.net/lists/linux-usb/msg246773.html
 - kernel test robot : https://www.spinics.net/lists/devicetree/msg634160.html
 - Jonathan Neuschäfer : https://www.spinics.net/lists/linux-usb/msg246790.html

Changes since version 1:
 - Add SoC specific compatible.
 - Remove USB phy mux property from dt-binding, will be handled differently.
 - Add CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS commit to this patch set.

Tomer Maimon (3):
  usb: chipidea: add CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS flag
  dt-bindings: usb: ci-hdrc-usb2: add npcm750 and npcm845 compatible
  usb: chipidea: Add support for NPCM

 .../devicetree/bindings/usb/ci-hdrc-usb2.yaml |   4 +
 drivers/usb/chipidea/Kconfig                  |   4 +
 drivers/usb/chipidea/Makefile                 |   1 +
 drivers/usb/chipidea/ci_hdrc_npcm.c           | 117 ++++++++++++++++++
 drivers/usb/chipidea/otg.c                    |   5 +-
 include/linux/usb/chipidea.h                  |   1 +
 6 files changed, 131 insertions(+), 1 deletion(-)
 create mode 100644 drivers/usb/chipidea/ci_hdrc_npcm.c