[PATCH v7 0/9] Add RZ/G3L USB2.0 host support

* [PATCH v7 0/9] Add RZ/G3L USB2.0 host support
@ 2026-08-12 14:19 ` Biju
  0 siblings, 0 replies; 14+ messages in thread
From: Biju @ 2026-08-12 14:19 UTC (permalink / raw)
  To: Philipp Zabel, Vinod Koul, Rob Herring, Krzysztof Kozlowski,
	Conor Dooley, Geert Uytterhoeven, Michael Turquette, Stephen Boyd,
	Liam Girdwood, Bartosz Golaszewski, Mark Brown, Magnus Damm
  Cc: Biju Das, Neil Armstrong, Yoshihiro Shimoda, linux-phy,
	devicetree, linux-kernel, linux-clk, linux-renesas-soc,
	Prabhakar Mahadev Lad, Biju Das

From: Biju Das <biju.das.jz@bp.renesas.com>

Hi All,

This patch series aims to add USB2.0 host support for the RZ/G3L SMARC
EVK. The RZ/G3L USB PHY block is similar to RZ/G3S, but each port
has an OTG controller, unlike RZ/G3S, which has an OTG controller only on
port 1. This series migrates regulator driver to use id-table so there
is hard dependency between reset driver and regulator driver.

Merge strategy:
  An Ack/Rb tag from Regulator Maintainer for patch#1 and #5.
  Patch #1,#2,#3,#4,#5 - Reset subsystem
  Patch #6,#7,#8,#9 - Renesas SoC

This patch series has functional dependency on [1]
[1] https://lore.kernel.org/all/20260812115010.108322-1-biju.das.jz@bp.renesas.com/

v6->v7:
 * Dropped PHY subsystem patches as it is accepted.
 * Merged patch series [2] to here
 * Collected the tags.
 * Added additionalProperties: false in regulators node.
 * Updated commit header of patch#6
 * Moved the host enable patch.
 * dr_mode changed to 'host' as function is not enabled yet.
 * Updated commit description for patch#9
 * Updated dr_mode = "host" to "otg" in {e,o}hci0 device nodes.
 [2] https://lore.kernel.org/all/20260707145135.247565-1-biju.das.jz@bp.renesas.com/#t
v5->v6:
 * To avoid breaking bisectability, prepared a single patch that
   does the "rzg2l-usb-vbus-regulator" -> "rzg2l-vbus-regulator"
   rename in both regulator and reset drivers and that could be
   merged into both trees.
 * Replaced dev_err->dev_err_probe() in error path of
   rzg3l_usb_vbus_regulator_probe().
 * Retained the tag as the change is trivial.
v4->v5:
 * Collected Ack tag for regulator driver changes.
 * Dropped renesas,sysc-pwrrdy for RZ/G3L as pwrrdy signal is modelled as
   power sequence.
 * Dropped the tag from Conor due to above change .
 * Replaced the variable regulator_driver_name->regulator_name in struct
   rzg2l_usbphy_ctrl_info
 * Switched to power sequence consumer for controlling pwrrdy signal.
 * Updated commit description for patch#3.
v3->v4:
 * Updated cover letter with merge strategy
 * Reorder the phy binding patch for easy merging.
 * Updated the commit description for patch #2,#3, #4.
 * Moved the handling of regulator_driver_name to patch #3
   in preparation for id_table match.
 * Migrated to id_table match using driver_name and reduced the length
   < 24.
 * Dropped rzg3l specific platform driver.
 * Dropped the tag for regulator driver,
 * Added id_table handling by introducing a common probe().
 * Dropped renesas,sysc-pwrrdy property for usbphy-ctrl node.
v2->v3:
 * Replaced items->enum in reset controller bindings.
 * Collected the tag for reset binding patch.
 * Dropped clock patch as it is accepted.
v1->v2:
 * Dropped patch#6(Introduce helper for regulator registration)
 * Passing pointer to an array of regulators to make it scalable.
 * Dropped regulator1-vbus and added a regulators group node.
 * Updated commit description for patch#1,#4,#6,#7,#8,#9 and #10.
 * Added enum instead of const in the compatible section.
 * Updated schema check.
 * Collected tag for PHY binding patch.
   in the regulator driver.
 * Added regulators group node and its children in SoC dtsi.

Biju Das (9):
  regulator: renesas-usb-vbus-regulator: Rename platform device to
    rzg2l-vbus-regulator
  dt-bindings: reset: renesas,rzg2l-usbphy-ctrl: Document RZ/G3L support
  reset: rzg2l-usbphy-ctrl: Introduce info struct for match data
  reset: rzg2l-usbphy-ctrl: Add RZ/G3L support
  regulator: renesas-usb-vbus-regulator: Add RZ/G3L VBUS regulator
    support
  arm64: dts: renesas: r9a08g046: Add USB2.0 host/phy device nodes
  arm64: dts: renesas: r9a08g046: Add USB2.0 function device nodes
  arm64: dts: renesas: r9a08g046l48-smarc: Add USB2.0 Host support
  arm64: dts: renesas: r9a08g046l48-smarc: Enable USB2.0 function
    support

 .../reset/renesas,rzg2l-usbphy-ctrl.yaml      |  41 ++++-
 arch/arm64/boot/dts/renesas/r9a08g046.dtsi    | 142 ++++++++++++++++++
 .../boot/dts/renesas/r9a08g046l48-smarc.dts   |  54 +++++++
 .../regulator/renesas-usb-vbus-regulator.c    |  75 ++++++++-
 drivers/reset/reset-rzg2l-usbphy-ctrl.c       | 109 +++++++++++---
 5 files changed, 399 insertions(+), 22 deletions(-)

-- 
2.43.0

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