linux-kernel - [PATCH 11/13] dt-bindings: lpspi: Update maximum num-cs value

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Message-Id: <20250814-james-nxp-lpspi-v1-11-9586d7815d14@linaro.org>
Date: Thu, 14 Aug 2025 17:06:51 +0100
From: James Clark <james.clark@...aro.org>
To: Frank Li <Frank.Li@....com>, Mark Brown <broonie@...nel.org>, 
 Clark Wang <xiaoning.wang@....com>, Fugang Duan <B38611@...escale.com>, 
 Gao Pan <pandy.gao@....com>, Fugang Duan <fugang.duan@....com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, Fabio Estevam <festevam@...il.com>, 
 Larisa Grigore <larisa.grigore@....nxp.com>, 
 Larisa Grigore <larisa.grigore@....com>, 
 Ghennadi Procopciuc <ghennadi.procopciuc@....com>, 
 Ciprianmarian Costea <ciprianmarian.costea@....com>, s32@....com
Cc: James Clark <james.clark@...aro.org>, linux-spi@...r.kernel.org, 
 imx@...ts.linux.dev, linux-kernel@...r.kernel.org, 
 devicetree@...r.kernel.org
Subject: [PATCH 11/13] dt-bindings: lpspi: Update maximum num-cs value

As mentioned in commit f46b06e62c86 ("spi: spi-fsl-lpspi: Read
chip-select amount from hardware for i.MX93"), some devices support up
to 3 chip selects so update the max value.

This isn't a fix or functional change because the devices with 3 chip
selects support reading the number of chip selects from hardware, so the
value wouldn't have needed to be set here. However the commit states
that the DT could be used to overwrite any HW value, so the full range
should be supported. This also avoids confusion for any readers about
how many chip selects there are.

Signed-off-by: James Clark <james.clark@...aro.org>
---
 Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
index a65a42ccaafe..ce7bd44ee17e 100644
--- a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
+++ b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
@@ -64,7 +64,7 @@ properties:
     description:
       number of chip selects.
     minimum: 1
-    maximum: 2
+    maximum: 3
     default: 1
 
   power-domains:

-- 
2.34.1