linux-kernel - [PATCH 5/6] dt-bindings: fsi: Convert fsi-master-gpio to DT schema

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Message-Id: <20250731-dt-fsi-cleanups-v1-5-e7b695a29fc3@kernel.org>
Date: Thu, 31 Jul 2025 17:12:22 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Joel Stanley <joel@....id.au>, 
 Andrew Jeffery <andrew@...econstruct.com.au>, 
 Benjamin Herrenschmidt <benh@...nel.crashing.org>, 
 Eddie James <eajames@...ux.ibm.com>, Ninad Palsule <ninad@...ux.ibm.com>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org, 
 linux-fsi@...ts.ozlabs.org
Subject: [PATCH 5/6] dt-bindings: fsi: Convert fsi-master-gpio to DT schema

Convert the GPIO-based FSI master binding to DT schema format.

Drop the "fsi-master" compatible as it has not be used consistently and
doesn't represent anything.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 .../devicetree/bindings/fsi/fsi-master-gpio.txt    | 28 ----------
 .../devicetree/bindings/fsi/fsi-master-gpio.yaml   | 63 ++++++++++++++++++++++
 2 files changed, 63 insertions(+), 28 deletions(-)

diff --git a/Documentation/devicetree/bindings/fsi/fsi-master-gpio.txt b/Documentation/devicetree/bindings/fsi/fsi-master-gpio.txt
deleted file mode 100644
index 1e442450747f..000000000000
--- a/Documentation/devicetree/bindings/fsi/fsi-master-gpio.txt
+++ /dev/null
@@ -1,28 +0,0 @@
-Device-tree bindings for gpio-based FSI master driver
------------------------------------------------------
-
-Required properties:
- - compatible = "fsi-master-gpio";
- - clock-gpios = <gpio-descriptor>;	: GPIO for FSI clock
- - data-gpios = <gpio-descriptor>;	: GPIO for FSI data signal
-
-Optional properties:
- - enable-gpios = <gpio-descriptor>;	: GPIO for enable signal
- - trans-gpios = <gpio-descriptor>;	: GPIO for voltage translator enable
- - mux-gpios = <gpio-descriptor>;	: GPIO for pin multiplexing with other
-                                          functions (eg, external FSI masters)
- - no-gpio-delays;			: Don't add extra delays between GPIO
-                                          accesses. This is useful when the HW
-					  GPIO block is running at a low enough
-					  frequency.
-
-Examples:
-
-    fsi-master {
-        compatible = "fsi-master-gpio", "fsi-master";
-        clock-gpios = <&gpio 0>;
-        data-gpios = <&gpio 1>;
-        enable-gpios = <&gpio 2>;
-        trans-gpios = <&gpio 3>;
-        mux-gpios = <&gpio 4>;
-    }
diff --git a/Documentation/devicetree/bindings/fsi/fsi-master-gpio.yaml b/Documentation/devicetree/bindings/fsi/fsi-master-gpio.yaml
new file mode 100644
index 000000000000..21bfbad595b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/fsi/fsi-master-gpio.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/fsi/fsi-master-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: fsi-master-gpio
+
+maintainers:
+  - Eddie James <eajames@...ux.ibm.com>
+
+allOf:
+  - $ref: /schemas/fsi/fsi-controller.yaml
+
+properties:
+  compatible:
+    items:
+      - const: fsi-master-gpio
+
+  clock-gpios:
+    description: GPIO for FSI clock
+    maxItems: 1
+
+  data-gpios:
+    description: GPIO for FSI data signal
+    maxItems: 1
+
+  enable-gpios:
+    description: GPIO for enable signal
+    maxItems: 1
+
+  trans-gpios:
+    description: GPIO for voltage translator enable
+    maxItems: 1
+
+  mux-gpios:
+    description: GPIO for pin multiplexing with other functions (eg, external
+      FSI masters)
+    maxItems: 1
+
+  no-gpio-delays:
+    description:
+      Don't add extra delays between GPIO accesses. This is useful when the HW
+      GPIO block is running at a low enough frequency.
+    type: boolean
+
+required:
+  - compatible
+  - clock-gpios
+  - data-gpios
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    fsi-master {
+        compatible = "fsi-master-gpio";
+        clock-gpios = <&gpio 0>;
+        data-gpios = <&gpio 1>;
+        enable-gpios = <&gpio 2>;
+        trans-gpios = <&gpio 3>;
+        mux-gpios = <&gpio 4>;
+    };

-- 
2.47.2