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Message-ID: <20250924223201.2952988-1-robh@kernel.org>
Date: Wed, 24 Sep 2025 17:31:59 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Linus Walleij <linus.walleij@...aro.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Antoine Tenart <atenart@...nel.org>,
Jisheng Zhang <jszhang@...nel.org>
Cc: linux-gpio@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: pinctrl: Convert Marvell Berlin pinctrl to DT schema
Convert the Marvell/Synaptics Berlin pinctrl binding to DT schema
format. The "reg" property was not documented for the newer SoCs.
Otherwise, it's a straight-forward conversion.
Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
With this Berlin is warning free on arm64.
---
.../bindings/pinctrl/berlin,pinctrl.txt | 47 ----------
.../pinctrl/marvell,berlin2-soc-pinctrl.yaml | 86 +++++++++++++++++++
2 files changed, 86 insertions(+), 47 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/pinctrl/berlin,pinctrl.txt
create mode 100644 Documentation/devicetree/bindings/pinctrl/marvell,berlin2-soc-pinctrl.yaml
diff --git a/Documentation/devicetree/bindings/pinctrl/berlin,pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/berlin,pinctrl.txt
deleted file mode 100644
index 0a2d5516e1f3..000000000000
--- a/Documentation/devicetree/bindings/pinctrl/berlin,pinctrl.txt
+++ /dev/null
@@ -1,47 +0,0 @@
-* Pin-controller driver for the Marvell Berlin SoCs
-
-Pin control registers are part of both chip controller and system
-controller register sets. Pin controller nodes should be a sub-node of
-either the chip controller or system controller node. The pins
-controlled are organized in groups, so no actual pin information is
-needed.
-
-A pin-controller node should contain subnodes representing the pin group
-configurations, one per function. Each subnode has the group name and
-the muxing function used.
-
-Be aware the Marvell Berlin datasheets use the keyword 'mode' for what
-is called a 'function' in the pin-controller subsystem.
-
-Required properties:
-- compatible: should be one of:
- "marvell,berlin2-soc-pinctrl",
- "marvell,berlin2-system-pinctrl",
- "marvell,berlin2cd-soc-pinctrl",
- "marvell,berlin2cd-system-pinctrl",
- "marvell,berlin2q-soc-pinctrl",
- "marvell,berlin2q-system-pinctrl",
- "marvell,berlin4ct-avio-pinctrl",
- "marvell,berlin4ct-soc-pinctrl",
- "marvell,berlin4ct-system-pinctrl",
- "syna,as370-soc-pinctrl"
-
-Required subnode-properties:
-- groups: a list of strings describing the group names.
-- function: a string describing the function used to mux the groups.
-
-Example:
-
-sys_pinctrl: pin-controller {
- compatible = "marvell,berlin2q-system-pinctrl";
-
- uart0_pmux: uart0-pmux {
- groups = "GSM12";
- function = "uart0";
- };
-};
-
-&uart0 {
- pinctrl-0 = <&uart0_pmux>;
- pinctrl-names = "default";
-};
diff --git a/Documentation/devicetree/bindings/pinctrl/marvell,berlin2-soc-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/marvell,berlin2-soc-pinctrl.yaml
new file mode 100644
index 000000000000..6ace3bf5433b
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/marvell,berlin2-soc-pinctrl.yaml
@@ -0,0 +1,86 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/marvell,berlin2-soc-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell Berlin pin-controller driver
+
+maintainers:
+ - Antoine Tenart <atenart@...nel.org>
+ - Jisheng Zhang <jszhang@...nel.org>
+
+description: >
+ Pin control registers are part of both chip controller and system controller
+ register sets. Pin controller nodes should be a sub-node of either the chip
+ controller or system controller node. The pins controlled are organized in
+ groups, so no actual pin information is needed.
+
+ A pin-controller node should contain subnodes representing the pin group
+ configurations, one per function. Each subnode has the group name and the
+ muxing function used.
+
+ Be aware the Marvell Berlin datasheets use the keyword 'mode' for what is
+ called a 'function' in the pin-controller subsystem.
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - marvell,berlin2-soc-pinctrl
+ - marvell,berlin2-system-pinctrl
+ - marvell,berlin2cd-soc-pinctrl
+ - marvell,berlin2cd-system-pinctrl
+ - marvell,berlin2q-soc-pinctrl
+ - marvell,berlin2q-system-pinctrl
+ - marvell,berlin4ct-avio-pinctrl
+ - marvell,berlin4ct-soc-pinctrl
+ - marvell,berlin4ct-system-pinctrl
+ - syna,as370-soc-pinctrl
+
+ reg:
+ maxItems: 1
+
+additionalProperties:
+ description: Pin group configuration subnodes.
+ type: object
+ $ref: /schemas/pinctrl/pinmux-node.yaml#
+ additionalProperties: false
+
+ properties:
+ groups:
+ description: List of pin group names.
+ $ref: /schemas/types.yaml#/definitions/string-array
+
+ function:
+ description: Function used to mux the group.
+ $ref: /schemas/types.yaml#/definitions/string
+
+ required:
+ - groups
+ - function
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - marvell,berlin4ct-avio-pinctrl
+ - marvell,berlin4ct-soc-pinctrl
+ - marvell,berlin4ct-system-pinctrl
+ - syna,as370-soc-pinctrl
+ then:
+ required:
+ - reg
+
+examples:
+ - |
+ pinctrl {
+ compatible = "marvell,berlin2q-system-pinctrl";
+
+ uart0-pmux {
+ groups = "GSM12";
+ function = "uart0";
+ };
+ };
--
2.51.0
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