[RFC,v2,0/4] Add USB VBUS regulator for RZ/G2L

Message

Biju Das June 7, 2024, 11:37 a.m. UTC

As per RZ/G2L HW manual, VBUSEN can be controlled by the VBOUT bit of the
VBUS Control Register(VBENCTL) register in the USBPHY Control. But this IP
is in the Reset block.

Reset driver exposes this register as regmap and instantiate the USB VBUS
regulator device. Consumers(phy device) can use regulator driver's regmap
to control VBUS as controlling is done in the atomic context.

Please provide your valuable inputs.

v1->v2:
 * Introduced a regulator driver to control VBUS

Biju Das (4):
  reset: renesas: Instantiate USB VBUS regulator device
  regulator: Add Renesas RZ/G2L USB VBUS regulator driver
  phy: renesas: phy-rcar-gen3-usb2: Control VBUSEN selection
  arm64: dts: renesas: rz-smarc: Replace fixed regulator for USB VBUS

 .../boot/dts/renesas/rz-smarc-common.dtsi     | 15 ++---
 drivers/phy/renesas/phy-rcar-gen3-usb2.c      | 17 ++++-
 drivers/regulator/Kconfig                     |  9 +++
 drivers/regulator/Makefile                    |  1 +
 .../regulator/renesas-usb-vbus-regulator.c    | 65 +++++++++++++++++++
 drivers/reset/reset-rzg2l-usbphy-ctrl.c       | 29 +++++++++
 6 files changed, 126 insertions(+), 10 deletions(-)
 create mode 100644 drivers/regulator/renesas-usb-vbus-regulator.c