linux-kernel - [PATCH] spi: dt-bindings: Move 'rx-sample-delay-ns' to spi-peripheral-props.yaml

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Date:   Wed, 25 May 2022 16:00:53 -0500
From:   Rob Herring <robh@...nel.org>
To:     Serge Semin <fancer.lancer@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Pratyush Yadav <p.yadav@...com>
Cc:     linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] spi: dt-bindings: Move 'rx-sample-delay-ns' to spi-peripheral-props.yaml

SPI bus per device properties must be defined in spi-peripheral-props.yaml
for unevaluatedProperties checks to work correctly on device nodes.

This has the side effect of promoting 'rx-sample-delay-ns' to be a
common property, but functionally it's no different if it was defined in
a Synopsys specific schema file.

Signed-off-by: Rob Herring <robh@...nel.org>
---
 .../bindings/spi/snps,dw-apb-ssi.yaml          | 18 +++++++++---------
 .../bindings/spi/spi-peripheral-props.yaml     |  5 +++++
 2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
index d7e08b03e204..e25d44c218f2 100644
--- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
+++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
@@ -124,9 +124,16 @@ properties:
 
   rx-sample-delay-ns:
     default: 0
-    description: Default value of the rx-sample-delay-ns property.
+    description: |
+      Default value of the rx-sample-delay-ns property.
       This value will be used if the property is not explicitly defined
-      for a SPI slave device. See below.
+      for a SPI slave device.
+
+      SPI Rx sample delay offset, unit is nanoseconds.
+      The delay from the default sample time before the actual sample of the
+      rxd input signal occurs. The "rx_sample_delay" is an optional feature
+      of the designware controller, and the upper limit is also subject to
+      controller configuration.
 
 patternProperties:
   "^.*@[0-9a-f]+$":
@@ -142,13 +149,6 @@ patternProperties:
       spi-tx-bus-width:
         const: 1
 
-      rx-sample-delay-ns:
-        description: SPI Rx sample delay offset, unit is nanoseconds.
-          The delay from the default sample time before the actual
-          sample of the rxd input signal occurs. The "rx_sample_delay"
-          is an optional feature of the designware controller, and the
-          upper limit is also subject to controller configuration.
-
 unevaluatedProperties: false
 
 required:
diff --git a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
index 5e32928c4fc3..6ffb74352bef 100644
--- a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
+++ b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
@@ -71,6 +71,11 @@ properties:
     description:
       Delay, in microseconds, after a read transfer.
 
+  rx-sample-delay-ns:
+    description: SPI Rx sample delay offset, unit is nanoseconds.
+      The delay from the default sample time before the actual
+      sample of the rxd input signal occurs.
+
   spi-tx-bus-width:
     description:
       Bus width to the SPI bus used for write transfers.
-- 
2.34.1