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spi: cs42l43: Don't support sidecar properties on device tree systems

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On some systems the cs42l43 has amplifiers attached to its
SPI controller that are not properly defined in ACPI. However,
this exists to provide compatibility with existing Windows ACPI.

On device tree systems this functionality should never be used,
there is no reason not to specify the amplifiers properly through
device tree.  Make this more clear by only allowing the "sidecar"
functionality to be used on non-DT systems.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20260223100717.4011114-1-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax 2026-02-23 10:07:17 +00:00 committed by Mark Brown
parent ffef412304
commit 20a88c156f
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1 changed files with 2 additions and 2 deletions
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drivers/spi/spi-cs42l43.c
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@ -367,10 +367,10 @@ static int cs42l43_spi_probe(struct platform_device *pdev)
ret = devm_add_action_or_reset(priv->dev, cs42l43_release_of_node, fwnode);
if (ret)
return ret;
} else {
fwnode_property_read_u32(xu_fwnode, "01fa-sidecar-instances", &nsidecars);
}
fwnode_property_read_u32(xu_fwnode, "01fa-sidecar-instances", &nsidecars);
/*
* Depending on the value of nsidecars we either create a software node
* or assign an fwnode. We don't want software node to be attached to