linux-kernel - [PATCH v4 4/7] dt-bindings: soc: microchip: sparx5-cpu-syscon: Move to dedicated schema

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Message-Id: <20240627-dt-bindings-mfd-syscon-split-v4-4-dc6699a9f3e4@linaro.org>
Date: Thu, 27 Jun 2024 12:32:20 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Orson Zhai <orsonzhai@...il.com>, 
 Baolin Wang <baolin.wang@...ux.alibaba.com>, 
 Chunyan Zhang <zhang.lyra@...il.com>, Jacky Huang <ychuang3@...oton.com>, 
 Shan-Chun Hung <schung@...oton.com>, 
 Khuong Dinh <khuong@...amperecomputing.com>, Lee Jones <lee@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Chuanhua Lei <lchuanhua@...linear.com>, 
 Rahul Tanwar <rtanwar@...linear.com>, 
 Lars Povlsen <lars.povlsen@...rochip.com>, 
 Steen Hegelund <Steen.Hegelund@...rochip.com>, 
 Daniel Machon <daniel.machon@...rochip.com>, UNGLinuxDriver@...rochip.com, 
 Nishanth Menon <nm@...com>, Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Jiaxun Yang <jiaxun.yang@...goat.com>, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v4 4/7] dt-bindings: soc: microchip: sparx5-cpu-syscon:
 Move to dedicated schema

microchip,sparx5-cpu-syscon is not a simple syscon device - it has
children and implements simple-mfd compatible - thus it should be fully
documented in its own binding.

Reviewed-by: Rob Herring (Arm) <robh@...nel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---

Context might depend on patch in Lee's MFD tree:
https://lore.kernel.org/all/171828959006.2643902.8308227314531523435.b4-ty@kernel.org/
and also further patches here depend on this one.
---
 Documentation/devicetree/bindings/mfd/syscon.yaml  |  1 -
 .../soc/microchip/microchip,sparx5-cpu-syscon.yaml | 49 ++++++++++++++++++++++
 2 files changed, 49 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mfd/syscon.yaml b/Documentation/devicetree/bindings/mfd/syscon.yaml
index 0e19eb0772f1..49bf85e8f220 100644
--- a/Documentation/devicetree/bindings/mfd/syscon.yaml
+++ b/Documentation/devicetree/bindings/mfd/syscon.yaml
@@ -95,7 +95,6 @@ properties:
               - microchip,lan966x-cpu-syscon
               - microchip,sam9x60-sfr
               - microchip,sama7g5-ddr3phy
-              - microchip,sparx5-cpu-syscon
               - mscc,ocelot-cpu-syscon
               - mstar,msc313-pmsleep
               - nuvoton,ma35d1-sys
diff --git a/Documentation/devicetree/bindings/soc/microchip/microchip,sparx5-cpu-syscon.yaml b/Documentation/devicetree/bindings/soc/microchip/microchip,sparx5-cpu-syscon.yaml
new file mode 100644
index 000000000000..1f0b542d2296
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/microchip/microchip,sparx5-cpu-syscon.yaml
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/microchip/microchip,sparx5-cpu-syscon.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip Sparx5 CPU Syscon
+
+maintainers:
+  - Lars Povlsen <lars.povlsen@...rochip.com>
+
+properties:
+  compatible:
+    items:
+      - const: microchip,sparx5-cpu-syscon
+      - const: syscon
+      - const: simple-mfd
+
+  reg:
+    maxItems: 1
+
+  mux-controller:
+    $ref: /schemas/mux/reg-mux.yaml#
+
+required:
+  - compatible
+  - reg
+  - mux-controller
+
+additionalProperties: false
+
+examples:
+  - |
+    soc {
+        #address-cells = <2>;
+        #size-cells = <1>;
+
+        syscon@...000000 {
+            compatible = "microchip,sparx5-cpu-syscon", "syscon",
+                         "simple-mfd";
+            reg = <0x6 0x00000000 0xd0>;
+
+            mux: mux-controller {
+                compatible = "mmio-mux";
+                #mux-control-cells = <1>;
+                mux-reg-masks = <0x88 0xf0>;
+            };
+        };
+    };

-- 
2.43.0