linux-kernel - [PATCH 2/2] dt-bindings: i2c: brcm,kona-i2c: convert to YAML

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Date:   Sat, 22 Apr 2023 20:07:37 +0200
From:   Stanislav Jakubek <stano.jakubek@...il.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>
Cc:     bcm-kernel-feedback-list@...adcom.com, linux-i2c@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] dt-bindings: i2c: brcm,kona-i2c: convert to YAML

Convert Broadcom Kona family I2C bindings to DT schema.

Changes during conversion:
  - add used, but previously undocumented SoC-specific compatibles
  - drop references to SoCs that are not upstream
  - add supported clock frequencies according to the Linux driver [1]

[1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/drivers/i2c/busses/i2c-bcm-kona.c#n731

Signed-off-by: Stanislav Jakubek <stano.jakubek@...il.com>
---
 .../devicetree/bindings/i2c/brcm,kona-i2c.txt | 35 -----------
 .../bindings/i2c/brcm,kona-i2c.yaml           | 58 +++++++++++++++++++
 2 files changed, 58 insertions(+), 35 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/i2c/brcm,kona-i2c.txt
 create mode 100644 Documentation/devicetree/bindings/i2c/brcm,kona-i2c.yaml

diff --git a/Documentation/devicetree/bindings/i2c/brcm,kona-i2c.txt b/Documentation/devicetree/bindings/i2c/brcm,kona-i2c.txt
deleted file mode 100644
index 1b87b741fa8e..000000000000
--- a/Documentation/devicetree/bindings/i2c/brcm,kona-i2c.txt
+++ /dev/null
@@ -1,35 +0,0 @@
-Broadcom Kona Family I2C
-=========================
-
-This I2C controller is used in the following Broadcom SoCs:
-
-  BCM11130
-  BCM11140
-  BCM11351
-  BCM28145
-  BCM28155
-
-Required Properties
--------------------
-- compatible: "brcm,bcm11351-i2c", "brcm,kona-i2c"
-- reg: Physical base address and length of controller registers
-- interrupts: The interrupt number used by the controller
-- clocks: clock specifier for the kona i2c external clock
-- clock-frequency: The I2C bus frequency in Hz
-- #address-cells: Should be <1>
-- #size-cells: Should be <0>
-
-Refer to clocks/clock-bindings.txt for generic clock consumer
-properties.
-
-Example:
-
-i2c@...16000 {
-	compatible = "brcm,bcm11351-i2c","brcm,kona-i2c";
-	reg = <0x3e016000 0x80>;
-	interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
-	clocks = <&bsc1_clk>;
-	clock-frequency = <400000>;
-	#address-cells = <1>;
-	#size-cells = <0>;
-};
diff --git a/Documentation/devicetree/bindings/i2c/brcm,kona-i2c.yaml b/Documentation/devicetree/bindings/i2c/brcm,kona-i2c.yaml
new file mode 100644
index 000000000000..636912d8518d
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/brcm,kona-i2c.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/brcm,kona-i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom Kona family I2C controller
+
+maintainers:
+  - Florian Fainelli <f.fainelli@...il.com>
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+        - brcm,bcm11351-i2c
+        - brcm,bcm21664-i2c
+        - brcm,bcm23550-i2c
+      - const: brcm,kona-i2c
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-frequency:
+    enum: [ 100000, 400000, 1000000, 3400000 ]
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-frequency
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c@...16000 {
+      compatible = "brcm,bcm11351-i2c", "brcm,kona-i2c";
+      reg = <0x3e016000 0x80>;
+      interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
+      clocks = <&bsc1_clk>;
+      clock-frequency = <400000>;
+      #address-cells = <1>;
+      #size-cells = <0>;
+    };
+...
-- 
2.25.1