Hi Wolfram, Thanks for your series! On Tue, Jul 22, 2025 at 09:07:42PM +0200, Wolfram Sang wrote: > Detailed changes since v3 are described in the individual patches. A > branch with enablement patches for RZ/G3S+G3E can be found here: > > git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git renesas/g3s/i3c > > Old coverletter: > > Here is a basic driver for the I3C IP found in various Renesas SoCs like > RZ/G3S and G3E. Missing features to be added incrementally are IBI, > HotJoin and maybe target support. Other than that, this driver has been > tested with I3C pure busses (2 targets) and mixed busses (2 I3C + > various I2C targets). DAA and reading/writing to the temperature sensors > worked reliably at different speeds. Scoping the bus, the output from > the protocol analyzer seems reasonable, too. It was created by merging > two versions of it from two different BSPs. Then, improved according to > code analyzers, cleaned up with regard to coding style, and then > refactored to hopefully match I3C subsystem standards. > > Looking forward to comments, > > Wolfram > > > Tommaso Merciai (1): > dt-bindings: i3c: Add Renesas I3C controller > > Wolfram Sang (3): > i3c: Standardize defines for specification parameters > i3c: Add more parameters for controllers to the header > i3c: master: Add basic driver for the Renesas I3C controller Tested this series on top of [1], using RZ/G3E SMARC EVK board + SMARC BREAKOUT board connected to P3T1085UK-ARD, using i3c pure bus and I'm able to read the i3c temperature sensor: root@smarc-rzg3e:~# cat /sys/class/hwmon/*/temp1_input 25875 For all the series: Tested-by: Tommaso Merciai <tommaso.merciai.xr@xxxxxxxxxxxxxx> [1] https://lkml.org/lkml/2025/6/24/581 Thanks & Regards, Tommaso > > .../devicetree/bindings/i3c/renesas,i3c.yaml | 179 +++ > MAINTAINERS | 7 + > drivers/i3c/master.c | 12 +- > drivers/i3c/master/Kconfig | 10 + > drivers/i3c/master/Makefile | 1 + > drivers/i3c/master/dw-i3c-master.c | 4 +- > drivers/i3c/master/renesas-i3c.c | 1404 +++++++++++++++++ > include/linux/i3c/master.h | 16 +- > 8 files changed, 1621 insertions(+), 12 deletions(-) > create mode 100644 Documentation/devicetree/bindings/i3c/renesas,i3c.yaml > create mode 100644 drivers/i3c/master/renesas-i3c.c > > -- > 2.47.2 >
