[PATCH 0/4] Add Microchip I3C controller
Conor Dooley
conor at kernel.org
Wed Sep 10 10:54:58 PDT 2025
On Wed, Sep 10, 2025 at 06:14:21AM +0000, Durai.ManickamKR at microchip.com wrote:
> On 10/09/25 01:16, Conor Dooley wrote:
> > 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
>
> Hi Conor,
>
> Was planning to sent along with the review comments received for the i3c
> driver. Will add this and send in patch v2 series.
>
> > Where is your dt-binding?
Weird quoting going on here. Why didn't you just send it with the v1,
like is normally done? There's no explanation provided about why you've
omitted it.
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