linux-kernel - [PATCH] spi: dt-bindings: snps,dw-abp-ssi: Allow up to 16 chip-selects

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Message-ID: <20251215230323.3634112-1-robh@kernel.org>
Date: Mon, 15 Dec 2025 17:03:22 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Mark Brown <broonie@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: linux-spi@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] spi: dt-bindings: snps,dw-abp-ssi: Allow up to 16 chip-selects

At least the Microchip Sparx5 supports up to 16 chip-selects, so
increase the maximum. The pattern for the child unit-address was
unconstrained, so update it to match the maximum number of
chip-selects.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
index 5c87fc8a845d..81838577cf9c 100644
--- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
+++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
@@ -121,7 +121,7 @@ properties:
   num-cs:
     default: 4
     minimum: 1
-    maximum: 4
+    maximum: 16
 
   dmas:
     items:
@@ -153,14 +153,14 @@ properties:
       provides an interface to override the native DWC SSI CS control.
 
 patternProperties:
-  "@[0-9a-f]+$":
+  "@[0-9a-f]$":
     type: object
     additionalProperties: true
 
     properties:
       reg:
         minimum: 0
-        maximum: 3
+        maximum: 0xf
 
 unevaluatedProperties: false
 
-- 
2.51.0