linux-kernel - [PATCH v3 1/9] dt-bindings: clock: add mtmips SoCs system controller

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Message-Id: <20230418090312.2818879-2-sergio.paracuellos@gmail.com>
Date:   Tue, 18 Apr 2023 11:03:04 +0200
From:   Sergio Paracuellos <sergio.paracuellos@...il.com>
To:     linux-clk@...r.kernel.org
Cc:     linux-mips@...r.kernel.org, tsbogend@...ha.franken.de,
        john@...ozen.org, linux-kernel@...r.kernel.org,
        p.zabel@...gutronix.de, mturquette@...libre.com, sboyd@...nel.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        matthias.bgg@...il.com, devicetree@...r.kernel.org,
        arinc.unal@...nc9.com
Subject: [PATCH v3 1/9] dt-bindings: clock: add mtmips SoCs system controller

Adds device tree binding documentation for system controller node present
in Mediatek MIPS and Ralink SOCs. This node is a clock and reset provider
for the rest of the world. This covers RT2880, RT3050, RT3052, RT3350,
RT3883, RT5350, MT7620, MT7628 and MT7688 SoCs.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@...il.com>
---
 .../bindings/clock/mediatek,mtmips-sysc.yaml  | 65 +++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/mediatek,mtmips-sysc.yaml

diff --git a/Documentation/devicetree/bindings/clock/mediatek,mtmips-sysc.yaml b/Documentation/devicetree/bindings/clock/mediatek,mtmips-sysc.yaml
new file mode 100644
index 000000000000..0b29dcacd686
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/mediatek,mtmips-sysc.yaml
@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/mediatek,mtmips-sysc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MTMIPS SoCs System Controller
+
+maintainers:
+  - Sergio Paracuellos <sergio.paracuellos@...il.com>
+
+description: |
+  MediaTek MIPS and Ralink SoCs provides a system controller to allow
+  to access to system control registers. These registers include clock
+  and reset related ones so this node is both clock and reset provider
+  for the rest of the world.
+
+  These SoCs have an XTAL from where the cpu clock is
+  provided as well as derived clocks for the bus and the peripherals.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - ralink,mt7620-sysc
+          - ralink,mt7628-sysc
+          - ralink,mt7688-sysc
+          - ralink,mt7620a-sysc
+          - ralink,rt2880-sysc
+          - ralink,rt3050-sysc
+          - ralink,rt3052-sysc
+          - ralink,rt3352-sysc
+          - ralink,rt3883-sysc
+          - ralink,rt5350-sysc
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+  '#clock-cells':
+    description:
+      The first cell indicates the clock number.
+    const: 1
+
+  '#reset-cells':
+    description:
+      The first cell indicates the reset bit within the register.
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+  - '#reset-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    syscon@0 {
+      compatible = "ralink,rt5350-sysc", "syscon";
+      reg = <0x0 0x100>;
+      #clock-cells = <1>;
+      #reset-cells = <1>;
+    };
-- 
2.25.1