From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../devicetree/bindings/i2c/apple,i2c.yaml         | 66 ++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/apple,i2c.yaml

(limited to 'Documentation/devicetree/bindings/i2c/apple,i2c.yaml')

diff --git a/Documentation/devicetree/bindings/i2c/apple,i2c.yaml b/Documentation/devicetree/bindings/i2c/apple,i2c.yaml
new file mode 100644
index 000000000..4ac61fec9
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/apple,i2c.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/i2c/apple,i2c.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Apple/PASemi I2C controller
+
+maintainers:
+  - Sven Peter <sven@svenpeter.dev>
+
+description: |
+  Apple SoCs such as the M1 come with a I2C controller based on the one found
+  in machines with P. A. Semi's PWRficient processors.
+  The bus is used to communicate with e.g. USB PD chips or the speaker
+  amp.
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - apple,t8103-i2c
+          - apple,t6000-i2c
+      - const: apple,i2c
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: I2C bus reference clock
+
+  interrupts:
+    maxItems: 1
+
+  clock-frequency:
+    description: |
+      Desired I2C bus clock frequency in Hz. If not specified, 100 kHz will be
+      used. This frequency is generated by dividing the reference clock.
+      Allowed values are between ref_clk/(16*4) and ref_clk/(16*255).
+
+  power-domains:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c@35010000 {
+      compatible = "apple,t8103-i2c", "apple,i2c";
+      reg = <0x35010000 0x4000>;
+      interrupt-parent = <&aic>;
+      interrupts = <0 627 4>;
+      clocks = <&ref_clk>;
+      #address-cells = <1>;
+      #size-cells = <0>;
+    };
-- 
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