[PATCH V4 00/11] i3c: mipi-i3c-hci-pci: Define Multi-Bus Instances for Intel controllers

[Adrian Hunter]

On 06/01/2026 18:44, Adrian Hunter wrote:
> Hi
> 
> All patches now have Frank's Rev'd-by

Can these be applied?

> 
> 
> Changes in V4:
> 	Add Frank's Rev'd-by for patches 5 - 8, 10 - 11
> 
> 
> Changes in V3:
> 
>   A notable change in V3 is the introduction of patch 6 "Assign unique
>   device names and IDs for Intel LPSS I3C" which does away with dynamic
>   devid allocaion.
> 
>     i3c: mipi-i3c-hci: Quieten initialization messages
> 	Minor white space tweaks to fix alignment
> 
>     i3c: mipi-i3c-hci-pci: Enable MSI support
> 	Enhance commit message
> 
>     i3c: mipi-i3c-hci-pci: Assign unique device names and IDs for Intel LPSS I3C
> 	New patch
> 
>     i3c: mipi-i3c-hci: Allow for Multi-Bus Instances
> 	Enhance commit message
> 
>     i3c: mipi-i3c-hci-pci: Pass base regs as platform data to i3c core device
> 	Enhance commit message
> 
>     i3c: mipi-i3c-hci-pci: Convert to MFD driver
> 	Add Frank's Rev'd-by
> 	Adjust for doing away with dynamic devid allocation
> 
>     i3c: mipi-i3c-hci-pci: Add support for Multi-Bus Instances
> 	Make hci a parameter of mipi_i3c_hci_pci_alloc()
> 	Adjust for doing away with dynamic devid allocation
> 	Enhance commit message
> 
>     i3c: mipi-i3c-hci-pci: Define Multi-Bus instances for supported controllers
> 	Adjust for doing away with dynamic devid allocation
> 
> 
> Changes in V2:
> 	Add Frank's Rev'd-by for patches 1 - 3
> 	Drop default driver data
> 	New patches split from "i3c: mipi-i3c-hci-pci: Add support for
> 	Multi-Bus Instances"
> 	Conversion to MFD split into separate patch
> 	Simplify ID allocation / free
> 	Correct use of __free()
> 	Also define instance 0 in driver_data
> 
> 
> Add support for MIPI I3C Host Controllers with the Multi-Bus Instance
> capability.  These controllers can host multiple I3C buses (up to 15)
> within a single hardware function (e.g., PCIe B/D/F), providing one
> indepedent HCI register set and corresponding I3C bus controller logic
> per bus.
> 
> Add support for that to mipi-i3c-hci-pci and mipi-i3c-hci and define
> Multi-Bus Instances for Intel controllers.
> 
> There are also some tidy-up patches to start with.
> 
> 
> Adrian Hunter (11):
>       i3c: mipi-i3c-hci: Remove duplicate blank lines
>       i3c: mipi-i3c-hci: Stop reading Extended Capabilities if capability ID is 0
>       i3c: mipi-i3c-hci: Quieten initialization messages
>       i3c: mipi-i3c-hci-pci: Do not repeatedly check for NULL driver_data
>       i3c: mipi-i3c-hci-pci: Enable MSI support
>       i3c: mipi-i3c-hci-pci: Assign unique device names and IDs for Intel LPSS I3C
>       i3c: mipi-i3c-hci: Allow for Multi-Bus Instances
>       i3c: mipi-i3c-hci-pci: Pass base regs as platform data to i3c core device
>       i3c: mipi-i3c-hci-pci: Convert to MFD driver
>       i3c: mipi-i3c-hci-pci: Add support for Multi-Bus Instances
>       i3c: mipi-i3c-hci-pci: Define Multi-Bus instances for supported controllers
> 
>  drivers/i3c/master/Kconfig                         |   1 +
>  drivers/i3c/master/mipi-i3c-hci/cmd_v1.c           |   2 -
>  drivers/i3c/master/mipi-i3c-hci/cmd_v2.c           |   2 -
>  drivers/i3c/master/mipi-i3c-hci/core.c             |  48 +++++--
>  drivers/i3c/master/mipi-i3c-hci/dat_v1.c           |   1 -
>  drivers/i3c/master/mipi-i3c-hci/dma.c              |   6 +-
>  drivers/i3c/master/mipi-i3c-hci/ext_caps.c         |  58 ++++----
>  drivers/i3c/master/mipi-i3c-hci/ext_caps.h         |   1 -
>  drivers/i3c/master/mipi-i3c-hci/hci.h              |   5 -
>  drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c | 160 +++++++++++++--------
>  drivers/i3c/master/mipi-i3c-hci/pio.c              |  17 ++-
>  include/linux/platform_data/mipi-i3c-hci.h         |  15 ++
>  12 files changed, 185 insertions(+), 131 deletions(-)
>  create mode 100644 include/linux/platform_data/mipi-i3c-hci.h
> 
> 
> Regards
> Adrian