RE: [PATCH 00/14] Add RSPI support for RZ/T2H and RZ/N2H

[Cosmin-Gabriel Tanislav]

> -----Original Message-----
> From: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@xxxxxxxxxxx>
> Sent: Wednesday, November 5, 2025 11:14 AM
> Cc: Fabrizio Castro <fabrizio.castro.jz@xxxxxxxxxxx>; Mark Brown <broonie@xxxxxxxxxx>; Rob Herring
> <robh@xxxxxxxxxx>; Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>; Conor Dooley <conor+dt@xxxxxxxxxx>; Geert
> Uytterhoeven <geert+renesas@xxxxxxxxx>; magnus.damm <magnus.damm@xxxxxxxxx>; Michael Turquette
> <mturquette@xxxxxxxxxxxx>; Stephen Boyd <sboyd@xxxxxxxxxx>; Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>;
> linux-spi@xxxxxxxxxxxxxxx; linux-renesas-soc@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; linux-clk@xxxxxxxxxxxxxxx; Cosmin-Gabriel Tanislav <cosmin-
> gabriel.tanislav.xa@xxxxxxxxxxx>
> Subject: [PATCH 00/14] Add RSPI support for RZ/T2H and RZ/N2H
> 
> Compared to the previously supported RZ/V2H, the Renesas RZ/T2H
> (R9A09G077) and RZ/N2H (R9A09G087) SoCs have a smaller FIFO, no resets,
> and only two clocks: PCLKSPIn and PCLK. PCLKSPIn, being the clock from
> which the SPI transfer clock is generated, is the equivalent of the TCLK
> from V2H. They also support generating the SPI transfer clock from PCLK.
> 
> V2:
>  * fix missing unwind goto quit_resets
>  * add resets: false and reset-names: false
> 

I missed bumping the patch version... I'll resend.

> Cosmin Tanislav (14):
>   clk: renesas: r9a09g077: add SPI module clocks
>   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      |  65 +++-
>  arch/arm64/boot/dts/renesas/r9a09g077.dtsi    |  72 ++++
>  arch/arm64/boot/dts/renesas/r9a09g087.dtsi    |  72 ++++
>  drivers/clk/renesas/r9a09g077-cpg.c           |  22 ++
>  drivers/spi/spi-rzv2h-rspi.c                  | 339 +++++++++++++++---
>  5 files changed, 501 insertions(+), 69 deletions(-)
> 
> --
> 2.51.2