Hi!

This patch series adds SPI driver for the Renesas RPC-IF.
Alongside relevant changes for spi-mem have been also
backported. This enables accessing SPI flash chip connected
to RPC-IF on RZ/G2x boards.

We currently only aim to backport just the driver hence there
are no changes to dts/i files. The driver has been tested on
RZ/G2{EM} with all the required dts/i changes [1].

Okay, that was quick.

What is your plan, merge dts changes soon? Or is the driver useful
even without the dts changes?

Changes for v2:
* Patches {1, 3, 4}/7 unchanged
* Patch 2/7
* Fixed reference leak for OF node in rpcif_probe()
* Fixed overwriting return value in error path of rpcif_manual_xfer()
* Replaced C++ style comment with C style
* Replaced tab with a space between struct and struct name
* Fixed a typo in commit message (s/absract/abstract)
* Patch 5/7
* Fixed reference leak in spi_mem_access_start for PM
* Patch 6/7
* Return early in spi_mem_dirmap_dirmap_{read/write}
* Patch 7/7
* Replaced C++ style comment with C style
* Used __maybe_unused for rpcif_spi_{suspend,resume} and dropped
CONFIG_PM_SLEEP ifdef checks
* Elaborated the description for SPI_RPCIF config
* Dropped the label err_put_ctlr from rpc_spi_probe()

Thanks for the changes; they are probably good (I have yet to take
close look), but I wonder if we should wait until they hit next or
mainline? If upstream maintainer disagrees, we would get divergence...

Best regards,
Pavel
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