linux-kernel - [PATCH 4/7] dt-bindings: spi: stm32: add bindings regarding stm32h7 spi slave

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Message-ID: <20230428121524.2125832-5-valentin.caron@foss.st.com>
Date:   Fri, 28 Apr 2023 14:15:21 +0200
From:   Valentin Caron <valentin.caron@...s.st.com>
To:     Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Alain Volmat <alain.volmat@...s.st.com>
CC:     <linux-spi@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Valentin Caron <valentin.caron@...s.st.com>
Subject: [PATCH 4/7] dt-bindings: spi: stm32: add bindings regarding stm32h7 spi slave

From: Alain Volmat <alain.volmat@...s.st.com>

Update the spi-stm32 binding yaml regarding to the SPI slave support.

Signed-off-by: Alain Volmat <alain.volmat@...s.st.com>
Signed-off-by: Valentin Caron <valentin.caron@...s.st.com>
---
 Documentation/devicetree/bindings/spi/st,stm32-spi.yaml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml b/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml
index c599eb359d56..1d26fa2658c5 100644
--- a/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml
+++ b/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml
@@ -27,6 +27,7 @@ allOf:
     then:
       properties:
         st,spi-midi-ns: false
+        spi-slave: false
 
 properties:
   "#address-cells": true
@@ -62,6 +63,13 @@ properties:
       - const: rx
       - const: tx
 
+  cs-gpios:
+    description:
+      In case of spi-slave not defined, cs-gpios behave as defined in
+      spi-controller.yaml.
+      In case of spi-slave defined, if <0>, indicate that SS should be
+      detected via the dedicated HW pin
+
 patternProperties:
   "^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-f]+$":
     type: object
-- 
2.25.1