[PATCH V4 00/12] i3c: mipi-i3c-hci-pci: Add LTR support for Intel controllers

[Adrian Hunter]

On 18/11/2025 18:44, Adrian Hunter wrote:
> Hi
> 
> Here are V4 patches primarily to add support for Latency Tolerance
> Reporting (LTR) for Intel controllers.  Most patches are small tidy-ups or
> preparation for the main change.

All patches now have been Rev'd-by Frank.

Are they OK to be applied?

> 
> 
> Changes in V4:
> 
>       i3c: mipi-i3c-hci-pci: Set 64-bit DMA mask for Intel controllers
>       i3c: mipi-i3c-hci-pci: Move all Intel-related definitions together
>       i3c: mipi-i3c-hci-pci: Change callback parameter
>       i3c: mipi-i3c-hci-pci: Add exit callback
> 	Add Frank's Rev'd-by
> 
>       i3c: mipi-i3c-hci-pci: Add LTR support for Intel controllers
> 	Drop intel_actualize_debugfs_root() that created 'intel-i3c'
> 	debugfs directory.
> 
> 
> Changes in V3:
>       i3c: mipi-i3c-hci-pci: Set 64-bit DMA mask for Intel controllers
> 	Omit mention of IOMMU in commit message.
> 
>       i3c: mipi-i3c-hci-pci: Rename some Intel-related identifiers
> 	Add Frank's Rev'd-by
> 
>       i3c: mipi-i3c-hci-pci: Use readl_poll_timeout()
> 	Add Frank's Rev'd-by
> 
>       i3c: mipi-i3c-hci-pci: Factor out intel_reset()
> 	Add Frank's Rev'd-by
> 
>       i3c: mipi-i3c-hci-pci: Change callback parameter
> 	Improve commit message.
> 
>       i3c: mipi-i3c-hci-pci: Add exit callback
> 	Improve commit message.
> 
>       i3c: mipi-i3c-hci-pci: Allocate a structure for Intel controller information
> 	Squash into "Add LTR support for Intel controllers" patch
> 
>       i3c: mipi-i3c-hci-pci: Add LTR support for Intel controllers
> 	Squash "Allocate a structure for Intel controller information" patch
> 	into this patch
> 
>       i3c: mipi-i3c-hci-pci: Set d3cold_delay to 0 for Intel controllers
> 	Add Frank's Rev'd-by
> 
> 
> Changes in V2:
>       i3c: mipi-i3c-hci-pci: Set 64-bit DMA mask for Intel controllers
> 	No need to check error from dma_set_mask_and_coherent() with a
> 	64-bit mask
> 
>       i3c: mipi-i3c-hci-pci: Rename some Intel-related identifiers
> 	Rename 'intel_init' to 'intel_i3c_init'
> 	More explanation in commit message
> 
>       i3c: mipi-i3c-hci-pci: Use readl_poll_timeout()
> 	Change 10000 to (10 * USEC_PER_MSEC)
> 
>       i3c: mipi-i3c-hci-pci: Constify driver data
> 	Add Frank's Rev'd-by
> 
>       i3c: mipi-i3c-hci-pci: Factor out intel_reset()
> 	Move location of intel_reset() to get a prettier diff
> 
>       i3c: mipi-i3c-hci-pci: Allocate a structure for mipi_i3c_hci_pci device information
> 	Add Frank's Rev'd-by
> 
>       i3c: mipi-i3c-hci-pci: Add LTR support for Intel controllers
> 	Make use of FIELD_PREP()
> 	Improve handling of values that exceed the maximum
> 
> 
> Adrian Hunter (12):
>       i3c: mipi-i3c-hci-pci: Set 64-bit DMA mask for Intel controllers
>       i3c: mipi-i3c-hci-pci: Move all Intel-related definitions together
>       i3c: mipi-i3c-hci-pci: Rename some Intel-related identifiers
>       i3c: mipi-i3c-hci-pci: Use readl_poll_timeout()
>       i3c: mipi-i3c-hci-pci: Constify driver data
>       i3c: mipi-i3c-hci-pci: Factor out private registers ioremapping
>       i3c: mipi-i3c-hci-pci: Factor out intel_reset()
>       i3c: mipi-i3c-hci-pci: Allocate a structure for mipi_i3c_hci_pci device information
>       i3c: mipi-i3c-hci-pci: Change callback parameter
>       i3c: mipi-i3c-hci-pci: Add exit callback
>       i3c: mipi-i3c-hci-pci: Add LTR support for Intel controllers
>       i3c: mipi-i3c-hci-pci: Set d3cold_delay to 0 for Intel controllers
> 
>  drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c | 215 +++++++++++++++++----
>  1 file changed, 177 insertions(+), 38 deletions(-)
> 
> 
> Regards
> Adrian