[PATCH v13 0/1] Add USB2.0 VBUS mux driver for RZ/G3E

Dear All,

This patch adds a new mux driver for RZ/V2H USB VBENCTL VBUS_SEL.

All patches in the original series ([0]) have been merged except this one,
so this is just a follow-up patch to add the mux driver.

[0] https://patchwork.kernel.org/project/linux-renesas-soc/cover/[email protected]/

Thanks & Regards,
Tommaso

v12->v13
 - Rebased on top of next-20260807
 - Renamed CONFIG_MUX_RZV2H_USB_VBENCTL to CONFIG_MUX_RZV2H_VBENCTL and
   propagated the rename to the source file and module name.
 - Dropped the unneeded "depends on OF".
 - Added the missing "To compile the driver as a module" paragraph to the
   Kconfig help text.
 - Used the REG_FIELD() macro instead of open-coding struct reg_field, and
   made it const to keep checkpatch --strict without warning.
 - Used dev->parent instead of adev->dev.parent in dev_get_regmap().
 - Collected Reviewed-by tags from Alvin and Prabhakar (the changes above are
   cosmetic, please let me know if you want them dropped).

v11->v12
 - No changes, just rebased on top of next-20260714

v10->v11:
 - Rebased on top of next-20260424
 - PATCHES 2,3,4,5 of [0] have been merged except this one,
   so this is just a follow-up patch to add the mux driver.

v9->v10:
 - Rebased on top of next-20260331
 - PATCH 4/5: Use struct reg_sequence and regmap_multi_reg_write()
   to handle initialization, assert and deassert sequences and drop
   custom struct rzv2h_usb2phy_regval.

v8->v9
 - Rebased on top of next-20260326
 - PATCH 1/6: Fixed driver comment year (2025 -> 2026)
     - Switch from devm_regmap_init_mmio() to dev_get_regmap().
     - Drop unnecessasry include bitops.h, of.h, property.h and
       drivers/reset/reset-rzv2h-usb2phy.h headers, driver is now based on
       regmap.
     - Collected PZabel tag.
 - PATCH 4/6: Collected PZabel tag.
 - PATCH 5/6: New patch.
 - PATCH 6/6: Drop linux/reset/reset_rzv2h_usb2phy.h dependecy as the
              driver is now based on regmap and does not need the
              reset driver's private header, update driver accordingly.
     - Collected PZabel tag.
 - Update cover letter.

v7->v8:
 - Rebased on top of next-20260311
 - Updated series cover letter as part of the series was already merged.

v6->v7:
  - Rebased on top of next-20260128
  - Split 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: [email protected] in patch 03/21
 - Patch 03/21: Added missing Cc: [email protected].
   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 (1):
  mux: Add driver for Renesas RZ/V2H VBENCTL VBUS_SEL mux

 drivers/mux/Kconfig         | 13 ++++++
 drivers/mux/Makefile        |  2 +
 drivers/mux/rzv2h-vbenctl.c | 81 +++++++++++++++++++++++++++++++++++++
 3 files changed, 96 insertions(+)
 create mode 100644 drivers/mux/rzv2h-vbenctl.c

-- 
2.54.0