linux-kernel - [PATCH v4 1/6] dt-bindings: mfd: ti,j721e-system-controller.yaml: Add J721e system controller

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Message-ID: <20200629125254.28754-2-rogerq@ti.com>
Date:   Mon, 29 Jun 2020 15:52:49 +0300
From:   Roger Quadros <rogerq@...com>
To:     <t-kristo@...com>
CC:     <robh@...nel.org>, <kishon@...com>, <nm@...com>, <vigneshr@...com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Roger Quadros <rogerq@...com>
Subject: [PATCH v4 1/6] dt-bindings: mfd: ti,j721e-system-controller.yaml: Add J721e system controller

Add DT binding schema for J721e system controller.

Signed-off-by: Roger Quadros <rogerq@...com>
---
 .../mfd/ti,j721e-system-controller.yaml       | 74 +++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/ti,j721e-system-controller.yaml

diff --git a/Documentation/devicetree/bindings/mfd/ti,j721e-system-controller.yaml b/Documentation/devicetree/bindings/mfd/ti,j721e-system-controller.yaml
new file mode 100644
index 000000000000..03d0a232c75e
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/ti,j721e-system-controller.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/ti,j721e-system-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI J721e System Controller Registers R/W Device Tree Bindings
+
+description: |
+  This represents the Control Module registers (CTRL_MMR0) on the SoC.
+  System controller node represents a register region containing a set
+  of miscellaneous registers. The registers are not cohesive enough to
+  represent as any specific type of device. The typical use-case is
+  for some other node's driver, or platform-specific code, to acquire
+  a reference to the syscon node (e.g. by phandle, node path, or
+  search using a specific compatible value), interrogate the node (or
+  associated OS driver) to determine the location of the registers,
+  and access the registers directly.
+
+maintainers:
+  - Kishon Vijay Abraham I <kishon@...com>
+  - Roger Quadros <rogerq@...com
+
+properties:
+  compatible:
+    anyOf:
+      - items:
+        - enum:
+           - ti,j721e-system-controller
+        - const: syscon
+        - const: simple-mfd
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  ranges: true
+
+# Optional children
+
+  "^serdes-ln-ctrl@[0-9a-f]+$":
+    type: object
+    description: |
+      This is the SERDES lane control mux. It should follow the bindings
+      specified in
+      Documentation/devicetree/bindings/mux/reg-mux.txt
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+  - ranges
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    scm_conf: scm-conf@...000 {
+        compatible = "ti,j721e-system-controller", "syscon", "simple-mfd";
+        reg = <0x00100000 0x1c000>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        serdes_ln_ctrl: serdes-ln-ctrl@...0 {
+            compatible = "mmio-mux";
+            reg = <0x00004080 0x50>;
+        };
+    };
+...
-- 
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