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Geert Uytterhoeven ee44d3fc9d
spi: sh-msiof: Remove unneeded compatible values
The Clock-Synchronized Serial Interfaces with FIFO (MSIOF) driver
matches against both SoC-specific and family-specific compatible values
to maintain backwards-compatibility with old DTBs predating the
introduction of the family-specific compatible values.

For RZ/G1, the SoC-specific compatible match entry can be removed from
the driver: their DT always had the family-specific compatible values,
and thus there was never a need to add the SoC-specific compatible
values to the driver.

For R-Car Gen2 and M3-W, the SoC-specific compatible match entries can
be removed, too, as there are a few points in time where DT
backwards-compatibility was broken for other reasons:
  - Legacy DT clock support is no longer supported since commit
    58256143cf ("clk: renesas: Remove R-Car Gen2 legacy DT clock
    support") in v5.5, and the addition of "renesas,rcar-gen2-msiof" to
    DTS in v4.11 predates the completion of the clock conversion in
    v4.15,
  - Legacy DT LVDS support is no longer supported since commit
    841281fe52 ("drm: rcar-du: Drop LVDS device tree backward
    compatibility") in v5.18, and the addition of
    "renesas,rcar-gen3-msiof" in commit 8b51f97138 ("arm64: dts:
    r8a7796: Use R-Car Gen 3 fallback binding for msiof nodes") in v4.11
    predates the LVDS conversion in commit 58e8ed2ee9 ("arm64:
    dts: renesas: Convert to new LVDS DT bindings") in v4.20.

For R-Car H3, the SoC-specific compatible match entry cannot be removed,
as its purpose is to handle an SoC-specific quirk.

Suggested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/d33393ac7536bc3f0f624b079f70d80dd19843db.1747401908.git.geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
History 2025-05-19 11:55:19 +01:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.