Re: [PATCH 0/4] Add Microchip I3C controller

[Conor Dooley <conor@kernel.org>]

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On Tue, Sep 09, 2025 at 04:43:29PM +0530, Durai Manickam KR wrote:
> Add support for microchip SAMA7D65 I3C HCI master only IP. This
> hardware is an instance of the MIPI I3C HCI Controller implementing
> version 1.0 specification. This driver adds platform-specific
> support for SAMA7D65 SoC.
> 
> I3C in master mode supports up to 12.5MHz, SDR mode data transfer in
> mixed bus mode (I2C and I3C target devices on same i3c bus). It also
> supports IBI mechanism.
>     
> Features tested and supported :
> 	Standard CCC commands.
>        	I3C SDR mode private transfers in PIO mode.
>        	I2C transfers in PIO mode.
>        	Pure bus mode and mixed bus mode.
> 
> Testing done:
> With this patch we are able to fully configure the lsm6dso I3C slave
> device. Unlike I2C, I hope there is no linux utility to check the
> various transactions supported in the host controller. These features
> will be added later on this driver after testing (probably with I3C
> analyser KIT).
> 
> Durai Manickam KR (4):
>   clk: at91: sama7d65: add peripheral clock for I3C
>   i3c: master: add Microchip SAMA7D65 I3C HCI master driver
>   ARM: configs: at91: sama7: Add SAMA7D65 I3C HCI master
>   ARM: dts: microchip: add I3C controller
> 
>  arch/arm/boot/dts/microchip/sama7d65.dtsi    |   12 +
>  arch/arm/configs/sama7_defconfig             |    2 +
>  drivers/clk/at91/sama7d65.c                  |    5 +-
>  drivers/i3c/master/Kconfig                   |   14 +
>  drivers/i3c/master/Makefile                  |    1 +
>  drivers/i3c/master/sama7d65-i3c-hci-master.c | 2705 ++++++++++++++++++
>  6 files changed, 2737 insertions(+), 2 deletions(-)
>  create mode 100644 drivers/i3c/master/sama7d65-i3c-hci-master.c

Where is your dt-binding?

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