linux-kernel - [PATCH 1/2] dt-bindings: Renesas versaclock7 device tree bindings

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Date:   Mon, 12 Sep 2022 11:36:12 -0700
From:   Alex Helms <alexander.helms.jy@...esas.com>
To:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-clk@...r.kernel.org
Cc:     robh+dt@...nel.org, sboyd@...nel.org, mturquette@...libre.com,
        alexander.helms.jy@...esas.com, michal.simek@...inx.com,
        saeed.nowshadi@....com, Rob Herring <robh@...nel.org>
Subject: [PATCH 1/2] dt-bindings: Renesas versaclock7 device tree bindings

Renesas Versaclock7 is a family of configurable clock generator ICs
with fractional and integer dividers. This driver has basic support
for the RC21008A device, a clock synthesizer with a crystal input and
8 outputs. The supports changing the FOD and IOD rates, and each
output can be gated.

Signed-off-by: Alex Helms <alexander.helms.jy@...esas.com>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../bindings/clock/renesas,versaclock7.yaml   | 64 +++++++++++++++++++
 MAINTAINERS                                   |  5 ++
 2 files changed, 69 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/renesas,versaclock7.yaml

diff --git a/Documentation/devicetree/bindings/clock/renesas,versaclock7.yaml b/Documentation/devicetree/bindings/clock/renesas,versaclock7.yaml
new file mode 100644
index 000000000..cc099d9e1
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/renesas,versaclock7.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/renesas,versaclock7.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas Versaclock7 Programmable Clock Device Tree Bindings
+
+maintainers:
+  - Alex Helms <alexander.helms.jy@...esas.com>
+
+description: |
+  Renesas Versaclock7 is a family of configurable clock generator and
+  jitter attenuator ICs with fractional and integer dividers.
+
+properties:
+  '#clock-cells':
+    const: 1
+
+  compatible:
+    enum:
+      - renesas,rc21008a
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: External crystal or oscillator
+
+  clock-names:
+    items:
+      - const: xin
+
+required:
+  - '#clock-cells'
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    vc7_xin: vc7_xin {
+        compatible = "fixed-clock";
+        #clock-cells = <0>;
+        clock-frequency = <49152000>;
+    };
+
+    i2c@0 {
+        reg = <0x0 0x100>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        vc7: vc7@9 {
+            compatible = "renesas,rc21008a";
+            reg = <0x9>;
+            #clock-cells = <1>;
+            clocks = <&vc7_xin>;
+            clock-names = "xin";
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index cd0f68d4a..8a23ea619 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -16536,6 +16536,11 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/mtd/renesas-nandc.yaml
 F:	drivers/mtd/nand/raw/renesas-nand-controller.c
 
+RENESAS VERSACLOCK 7 CLOCK DRIVER
+M:	Alex Helms <alexander.helms.jy@...esas.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/clock/renesas,versaclock7.yaml
+
 RESET CONTROLLER FRAMEWORK
 M:	Philipp Zabel <p.zabel@...gutronix.de>
 S:	Maintained
-- 
2.30.2