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Message-ID: <20250904165909.281131-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Thu, 4 Sep 2025 17:59:07 +0100
From: Prabhakar <prabhakar.csengg@...il.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
Wolfram Sang <wsa+renesas@...g-engineering.com>,
Magnus Damm <magnus.damm@...il.com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-renesas-soc@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Prabhakar <prabhakar.csengg@...il.com>,
Biju Das <biju.das.jz@...renesas.com>,
Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH 0/2] Add I3C support to RZ/V2N and RZ/V2H(P) SoCs
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Hi All,
This series adds I3C node to RZ/V2N and RZ/V2H(P) SoC DTSI files.
I3C was tested on RZ/V2H(P) and RZ/V2N EVKs using P3T1085UK Arduino
Shield Evaluation Board [0].
Disable I2C2 on PMOD connector CN6 and enable I3C.
Connect EVK TO P3T1085UK Arduino Shield Evaluation Board
P3T1085UK <-> EVK PMOD CN6
- J13[1] to CN6[3] (I3C_SCL)
- J13[2] to CN6[4] (I3C_SDA)
- J13[4] to CN6[5] (GND)
- J9[7] to CN6[11] (GND)
- J9[9] to CN6[6] (3.3V)
On P3T1085UK,
- JP2 pin1 to pin2 (I3C_SDA)
- JP3 pin1 to pin2 (I3C_SCL)
- JP1 pin2 to pin3 (VDD 3V3)
[0] https://www.nxp.com/design/design-center/development-boards-and-designs/analog-toolbox/arduino-shields-solutions/p3t1085uk-arduino-shield-evaluation-board:P3T1085UK-ARD
Test Logs:
--- RZ/V2H(P) ---
root@...2h-evk:~# cat /sys/kernel/debug/clk/clk_summary | grep i3c
i3c_0_pclk 1 2 0 100000000 0 0 50000 Y 12400000.i3c pclk
i3c_0_pclkrw 1 2 0 100000000 0 0 50000 Y 12400000.i3c pclkrw
i3c_0_tclk 1 2 0 200000000 0 0 50000 Y 12400000.i3c tclk
root@...2h-evk:~#
root@...2h-evk:~# cat /sys/class/hwmon/*/temp1_input
26687
26812
root@...2h-evk:~# cat /proc/interrupts | grep i3c
150: 38 0 0 0 GICv3 709 Edge i3c-resp
151: 2 0 0 0 GICv3 712 Edge i3c-rx
152: 0 0 0 0 GICv3 713 Edge i3c-tx
153: 0 0 0 0 GICv3 721 Level i3c-start
154: 0 0 0 0 GICv3 722 Level i3c-stop
155: 0 0 0 0 GICv3 724 Level i3c-tend
156: 0 0 0 0 GICv3 725 Level i3c-nack
root@...2h-evk:~# cat /sys/class/hwmon/*/temp1_input
26687
26812
root@...2h-evk:~# cat /proc/interrupts | grep i3c
150: 42 0 0 0 GICv3 709 Edge i3c-resp
151: 2 0 0 0 GICv3 712 Edge i3c-rx
152: 0 0 0 0 GICv3 713 Edge i3c-tx
153: 0 0 0 0 GICv3 721 Level i3c-start
154: 0 0 0 0 GICv3 722 Level i3c-stop
155: 0 0 0 0 GICv3 724 Level i3c-tend
156: 0 0 0 0 GICv3 725 Level i3c-nack
root@...2h-evk:~#
--- RZ/V2N ---
root@...2n-evk:~# cat /sys/kernel/debug/clk/clk_summary | grep i3c
i3c_0_pclk 1 2 0 100000000 0 0 50000 Y 12400000.i3c pclk
i3c_0_pclkrw 1 2 0 100000000 0 0 50000 Y 12400000.i3c pclkrw
i3c_0_tclk 1 2 0 200000000 0 0 50000 Y 12400000.i3c tclk
root@...2n-evk:~# cat /proc/interrupts | grep i3c
65: 22 0 0 0 GICv3 709 Edge i3c-resp
66: 2 0 0 0 GICv3 712 Edge i3c-rx
67: 0 0 0 0 GICv3 713 Edge i3c-tx
68: 0 0 0 0 GICv3 721 Level i3c-start
69: 0 0 0 0 GICv3 722 Level i3c-stop
70: 0 0 0 0 GICv3 724 Level i3c-tend
71: 0 0 0 0 GICv3 725 Level i3c-nack
root@...2n-evk:~# cat /sys/class/hwmon/*/temp1_input
27000
27125
root@...2n-evk:~# cat /proc/interrupts | grep i3c
65: 26 0 0 0 GICv3 709 Edge i3c-resp
66: 2 0 0 0 GICv3 712 Edge i3c-rx
67: 0 0 0 0 GICv3 713 Edge i3c-tx
68: 0 0 0 0 GICv3 721 Level i3c-start
69: 0 0 0 0 GICv3 722 Level i3c-stop
70: 0 0 0 0 GICv3 724 Level i3c-tend
71: 0 0 0 0 GICv3 725 Level i3c-nack
root@...2n-evk:~#
Cheers,
Prabhakar
Lad Prabhakar (2):
arm64: dts: renesas: r9a09g057: Add I3C node
arm64: dts: renesas: r9a09g056: Add I3C node
arch/arm64/boot/dts/renesas/r9a09g056.dtsi | 33 ++++++++++++++++++++++
arch/arm64/boot/dts/renesas/r9a09g057.dtsi | 33 ++++++++++++++++++++++
2 files changed, 66 insertions(+)
--
2.51.0
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