linux-kernel - [PATCH v2 0/6] Add DMA support for RZ/T2H and RZ/N2H

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Message-ID: <20251201124911.572395-1-cosmin-gabriel.tanislav.xa@renesas.com>
Date: Mon,  1 Dec 2025 14:49:05 +0200
From: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@...esas.com>
To: Vinod Koul <vkoul@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Cosmin Tanislav <cosmin-gabriel.tanislav.xa@...esas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
	Johan Hovold <johan@...nel.org>,
	Biju Das <biju.das.jz@...renesas.com>
Cc: dmaengine@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org
Subject: [PATCH v2 0/6] Add DMA support for RZ/T2H and RZ/N2H

The Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs have three
DMAC instances. Compared to the previously supported RZ/V2H, these SoCs
are missing the error interrupt line and the reset lines, and they use
a different ICU IP.

This series depends on the ICU series [1].

[1]: https://lore.kernel.org/lkml/20251201112933.488801-1-cosmin-gabriel.tanislav.xa@renesas.com/

V2:
 * remove notes

Cosmin Tanislav (6):
  dmaengine: sh: rz_dmac: make error interrupt optional
  dmaengine: sh: rz_dmac: make register_dma_req() chip-specific
  dt-bindings: dma: renesas,rz-dmac: document RZ/{T2H,N2H}
  dmaengine: sh: rz_dmac: add RZ/{T2H,N2H} support
  arm64: dts: renesas: r9a09g077: add DMAC support
  arm64: dts: renesas: r9a09g087: add DMAC support

 .../bindings/dma/renesas,rz-dmac.yaml         | 100 ++++++++++++++----
 arch/arm64/boot/dts/renesas/r9a09g077.dtsi    |  90 ++++++++++++++++
 arch/arm64/boot/dts/renesas/r9a09g087.dtsi    |  90 ++++++++++++++++
 drivers/dma/sh/rz-dmac.c                      |  94 +++++++++-------
 4 files changed, 317 insertions(+), 57 deletions(-)

-- 
2.52.0