linux-kernel - [PATCH v2 1/7] dt-bindings: mfd: ti,j721e-system-controller.yaml: Document "syscon"

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Date:   Mon, 9 Nov 2020 22:34:03 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Tero Kristo <t-kristo@...com>, Nishanth Menon <nm@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Roger Quadros <rogerq@...com>, Lee Jones <lee.jones@...aro.org>
CC:     Kishon Vijay Abraham I <kishon@...com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
        <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 1/7] dt-bindings: mfd: ti,j721e-system-controller.yaml: Document "syscon"

Add binding documentation for "syscon" which should be a subnode of
the system controller (scm-conf).

Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
 .../mfd/ti,j721e-system-controller.yaml       | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/ti,j721e-system-controller.yaml b/Documentation/devicetree/bindings/mfd/ti,j721e-system-controller.yaml
index 19fcf59fd2fe..0b115b707ab2 100644
--- a/Documentation/devicetree/bindings/mfd/ti,j721e-system-controller.yaml
+++ b/Documentation/devicetree/bindings/mfd/ti,j721e-system-controller.yaml
@@ -50,6 +50,38 @@ patternProperties:
       specified in
       Documentation/devicetree/bindings/mux/reg-mux.txt
 
+  "^syscon@[0-9a-f]+$":
+    type: object
+    description: |
+      This is the system controller configuration required to configure PCIe
+      mode, lane width and speed.
+
+    properties:
+      compatible:
+        items:
+          - enum:
+              - ti,j721e-system-controller
+          - const: syscon
+          - const: simple-mfd
+
+      reg:
+        maxItems: 1
+
+      "#address-cells":
+        const: 1
+
+      "#size-cells":
+        const: 1
+
+      ranges: true
+
+    required:
+      - compatible
+      - reg
+      - "#address-cells"
+      - "#size-cells"
+      - ranges
+
 required:
   - compatible
   - reg
@@ -72,5 +104,13 @@ examples:
             compatible = "mmio-mux";
             reg = <0x00004080 0x50>;
         };
+
+        pcie1_ctrl: syscon@...4 {
+            compatible = "ti,j721e-system-controller", "syscon", "simple-mfd";
+            reg = <0x00004074 0x4>;
+            #address-cells = <1>;
+            #size-cells = <1>;
+            ranges = <0x4074 0x4074 0x4>;
+        };
     };
 ...
-- 
2.17.1