From patchwork Fri Dec 16 21:21:57 2022
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From: Marek Vasut <marex@denx.de>
To: linux-clk@vger.kernel.org
Cc: Marek Vasut <marex@denx.de>,
        Michael Turquette <mturquette@baylibre.com>,
        Rob Herring <robh+dt@kernel.org>,
        Stephen Boyd <sboyd@kernel.org>, devicetree@vger.kernel.org
Subject: [PATCH 1/2] dt-bindings: clk: si521xx: Add Skyworks Si521xx I2C PCIe
 clock generators
Date: Fri, 16 Dec 2022 22:21:57 +0100
Message-Id: <20221216212158.600220-1-marex@denx.de>
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Add binding for Skyworks Si521xx PCIe clock generators. This binding
is designed to support Si52144/Si52146/Si52147 series I2C PCIe clock
generators, tested model is Si52144. It should be possible to add
Si5213x series as well.

Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: devicetree@vger.kernel.org
---
 .../bindings/clock/skyworks,si521xx.yaml      | 69 +++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/skyworks,si521xx.yaml

diff --git a/Documentation/devicetree/bindings/clock/skyworks,si521xx.yaml b/Documentation/devicetree/bindings/clock/skyworks,si521xx.yaml
new file mode 100644
index 0000000000000..c30114e3a7631
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/skyworks,si521xx.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/skyworks,si521xx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Binding for Skyworks Si521xx I2C PCIe clock generators
+
+description: |
+  The Skyworks Si521xx are I2C PCIe clock generators providing
+  from 4 to 9 output clocks.
+
+maintainers:
+  - Marek Vasut <marex@denx.de>
+
+properties:
+  compatible:
+    enum:
+      - skyworks,si52144
+      - skyworks,si52146
+      - skyworks,si52147
+
+  reg:
+    description: I2C device address
+    const: 0x6b
+
+  '#clock-cells':
+    const: 1
+
+  clocks:
+    items:
+      - description: XTal input clock
+
+  skyworks,out-amplitude-microvolt:
+    enum: [ 300000, 400000, 500000, 600000, 700000, 800000, 900000, 1000000 ]
+    description: Output clock signal amplitude
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    /* 25MHz reference crystal */
+    ref25: ref25m {
+        compatible = "fixed-clock";
+        #clock-cells = <0>;
+        clock-frequency = <25000000>;
+    };
+
+    i2c@0 {
+        reg = <0x0 0x100>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        clock-generator@6b {
+            compatible = "skyworks,si52144";
+            reg = <0x6b>;
+            #clock-cells = <1>;
+
+            clocks = <&ref25m>;
+        };
+    };
+
+...