[PATCH v2 0/4] Describe coresight on R-Mobile A1

Marek Vasut
2026-04-15T23:33:18Z

Implement support for ZT trace bus and ZTR trace clock on R-Mobile A1.
Describe coresight topology on R-Mobile A1. Extend the current PTM node
with connection funnel, TPIU, ETB and replicator. The coresight on this
hardware is clocked from the ZT/ZTR trace clock.

Please note that this is written according to R-Mobile A1 User's Manual:
Hardware , Rev.2.00 Sep. 2013 . I currently do not have access to this
hardware, therefore I am sending this as an RFC patchset.

Marek Vasut (4):
dt-bindings: clock: renesas,cpg-clocks: Document ZT/ZTR trace clock on
R-Mobile A1
clk: renesas: r8a7740: Implement ZT/ZTR trace clock on R-Mobile A1
ARM: dts: renesas: r8a7740: Add ZT/ZTR trace clock on R-Mobile A1
ARM: dts: renesas: r8a7740: Describe coresight on R-Mobile A1

.../bindings/clock/renesas,cpg-clocks.yaml | 6 +-
arch/arm/boot/dts/renesas/r8a7740.dtsi | 116 +++++++++++++++++-
drivers/clk/renesas/clk-r8a7740.c | 2 +
include/dt-bindings/clock/r8a7740-clock.h | 2 +
4 files changed, 120 insertions(+), 6 deletions(-)

---
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-clk@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org

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2.53.0