linux-kernel - [PATCH v4 00/13] Add RSPI support for RZ/T2H and RZ/N2H

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Message-ID: <20251119161434.595677-1-cosmin-gabriel.tanislav.xa@renesas.com>
Date: Wed, 19 Nov 2025 18:14:21 +0200
From: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@...esas.com>
To: Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Mark Brown <broonie@...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>,
	Philipp Zabel <p.zabel@...gutronix.de>
Cc: linux-spi@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Cosmin Tanislav <cosmin-gabriel.tanislav.xa@...esas.com>
Subject: [PATCH v4 00/13] Add RSPI support for RZ/T2H and RZ/N2H

V4:
 * remove conditional minItems: 2 and maxItems: 3 for clocks property
   since it is already set to that
 * remove renesas,r9a09g087-rspi check since it implies
   renesas,r9a09g077-rspi
 * replace contains: enum: with contains: const: since there's only one
   compatible to be checked against

V3:
 * no changes

V2:
 * fix missing unwind goto quit_resets
 * add resets: false and reset-names: false

Cosmin Tanislav (13):
  spi: rzv2h-rspi: make resets optional
  spi: rzv2h-rspi: make FIFO size chip-specific
  spi: rzv2h-rspi: make clocks chip-specific
  spi: rzv2h-rspi: move register writes out of rzv2h_rspi_setup_clock()
  spi: rzv2h-rspi: avoid recomputing transfer frequency
  spi: rzv2h-rspi: make transfer clock rate finding chip-specific
  spi: rzv2h-rspi: add support for using PCLK for transfer clock
  spi: rzv2h-rspi: add support for variable transfer clock
  spi: rzv2h-rspi: add support for loopback mode
  dt-bindings: spi: renesas,rzv2h-rspi: document RZ/T2H and RZ/N2H
  spi: rzv2h-rspi: add support for RZ/T2H and RZ/N2H
  arm64: dts: renesas: r9a09g077: Add SPIs support
  arm64: dts: renesas: r9a09g087: Add SPIs support

 .../bindings/spi/renesas,rzv2h-rspi.yaml      |  62 +++-
 arch/arm64/boot/dts/renesas/r9a09g077.dtsi    |  72 ++++
 arch/arm64/boot/dts/renesas/r9a09g087.dtsi    |  72 ++++
 drivers/spi/spi-rzv2h-rspi.c                  | 339 +++++++++++++++---
 4 files changed, 476 insertions(+), 69 deletions(-)

-- 
2.52.0