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

Marek Vasut marek.vasut+renesas at mailbox.org
Fri Mar 27 16:58:17 PDT 2026


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    |   8 +-
 arch/arm/boot/dts/renesas/r8a7740.dtsi        | 120 +++++++++++++++++-
 drivers/clk/renesas/clk-r8a7740.c             |   2 +
 include/dt-bindings/clock/r8a7740-clock.h     |   2 +
 4 files changed, 123 insertions(+), 9 deletions(-)

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

-- 
2.53.0




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