linux-kernel - [PATCH v7 0/2] Add USB2.0 support for RZ/G3E

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Message-ID: <cover.1769703480.git.tommaso.merciai.xr@bp.renesas.com>
Date: Thu, 29 Jan 2026 17:48:47 +0100
From: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
To: tomm.merciai@...il.com,
	p.zabel@...gutronix.de
Cc: linux-renesas-soc@...r.kernel.org,
	biju.das.jz@...renesas.com,
	Tommaso Merciai <tommaso.merciai.xr@...renesas.com>,
	Peter Rosin <peda@...ntia.se>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Sebastian Reichel <sebastian.reichel@...labora.com>,
	Andi Shyti <andi.shyti@...nel.org>,
	Uwe Kleine-König <ukleinek@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v7 0/2] Add USB2.0 support for RZ/G3E

Dear All,

This series adds support for the Renesas RZ/V2H USB VBENCTL VBUS_SEL mux,
which is required to properly manage the USB2.0 VBUS line.

Splitting the series [0] into per subsystem series for easy merging.

[0] https://patchwork.kernel.org/project/linux-renesas-soc/list/?series=1035721&archive=both

Thanks & Regards,
Tommaso

v6->v7:
 - Rebased on top of next-20260128
 - Splitted series into per subsystem series, no changes.

v5->v6:
 - Rebased on top of next-20251219
 - Re-arranged series order per subsystem patches.
 - Patch: 3/14: Collected tag.
 - Patch: 4/14: Fixed commit message.
 - Split from dts patches will send separate series.
 - Added merge strategy in cover letter.

v4->v5:
 - Rebased on top of next-20251127
 - Patch 01/22: Added Reviewed-by tag from Conor Dooley.
 - Patch 06/22: Changed file name to rzv2h-usb-vbenctl.c and Fixed
   Makefile, Kconfig, function names accordingly.
   Changed driver .name to "vbenctl" and fix auxiliary_device_id name.
   Updated commit msg.
 - Patch 07/22: Update mux_name to "vbenctl" to match the driver name.
   Updated commit message.
 - Patch 11/22: Fixed if statement for mux_state error check.

v3->v4:
 - Rebased on top of next-20251121
 - Added patch 01/22 to remove nodename pattern from mux-controller schema.
 - Switch back to v2 implementation for mux controller in patches
   5/22, 15/22, 16/22, 21/22.
 - Improved commit bodies for patches 5/22, 15/22, 16/22, 21/22.
 - Removed mux_chip->dev.of_node not needed in patch 06/22.
 - Collected CDooley tag in patch 09/22.
 - Added missing select MULTIPLEXER into Kconfig in patch 11/22.

v2->v3:
 - Rebased on top of next-20251110 + [1] + [2]
 - Add missing Cc: stable@...r.kernel.org in patch 03/21
 - Patch 03/21: Added missing Cc: stable@...r.kernel.org.
   Improved commit body describing the removal of rzv2h_usbphy_assert_helper()
   from rzv2h_usb2phy_reset_probe().
 - Patch 04/21: Manipulate mux-controller as an internal node.
   Improved commit body.
 - Patch 05/21: The main driver is using now __devm_auxiliary_device_create()
   then update the aux driver accordingly.
 - Patch 06/21: Use __devm_auxiliary_device_create() to create the aux device.
 - Patch 08/21: Improved commit body and mux-states description.
 - Patch 14/21: Manipulate the mux controller as an internal node,
   and update commit body accordingly.
 - Patch 15/21: Manipulate the mux controller as an internal node,
   and update commit body accordingly.
 - Patch 20/21: Manipulate the mux controller as an internal node.

v1->v2:
 - Rebased on top of next-20251103 + [1] + [2]
 - Reworked series to use mux-state for controlling VBUS_SEL
   as suggested by PZabel added also mux bindings documentation
   on phy and rst side.
 - Collected Conor Dooley tags
 - Dropped unnecessary rzv2h_usbphy_assert_helper() function from
   rzv2h_usb2phy_reset_probe()

Tommaso Merciai (2):
  dt-bindings: mux: Remove nodename pattern constraints
  mux: Add driver for Renesas RZ/V2H USB VBENCTL VBUS_SEL mux

 .../bindings/mux/mux-controller.yaml          |  6 --
 drivers/mux/Kconfig                           | 11 +++
 drivers/mux/Makefile                          |  2 +
 drivers/mux/rzv2h-usb-vbenctl.c               | 97 +++++++++++++++++++
 include/linux/reset/reset_rzv2h_usb2phy.h     | 11 +++
 5 files changed, 121 insertions(+), 6 deletions(-)
 create mode 100644 drivers/mux/rzv2h-usb-vbenctl.c
 create mode 100644 include/linux/reset/reset_rzv2h_usb2phy.h

-- 
2.43.0