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Add DMA support for RZ/T2H RSPI
authorMark Brown <broonie@kernel.org>
Mon, 15 Dec 2025 01:09:58 +0000 (10:09 +0900)
committerMark Brown <broonie@kernel.org>
Mon, 15 Dec 2025 01:09:58 +0000 (10:09 +0900)
Merge series from Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>:

The DMA controller can be used to transfer data to and from the SPI
controller without involving the CPU for each word of a SPI transfer.

Add support for DMA mode, and do some other cleanups while touching the
same code.


Trivial merge
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