linux-kernel - [PATCH v14 1/3] dt-bindings: i2c: npcm7xx: add NPCM I2C controller

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Message-Id: <20200527200820.47359-2-tali.perry1@gmail.com>
Date:   Wed, 27 May 2020 23:08:18 +0300
From:   Tali Perry <tali.perry1@...il.com>
To:     ofery@...gle.com, brendanhiggins@...gle.com,
        avifishman70@...il.com, tmaimon77@...il.com, kfting@...oton.com,
        venture@...gle.com, yuenn@...gle.com, benjaminfair@...gle.com,
        robh+dt@...nel.org, wsa@...-dreams.de,
        andriy.shevchenko@...ux.intel.com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-i2c@...r.kernel.org,
        openbmc@...ts.ozlabs.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Tali Perry <tali.perry1@...il.com>
Subject: [PATCH v14 1/3] dt-bindings: i2c: npcm7xx: add NPCM I2C controller

Added device tree binding documentation for Nuvoton BMC
NPCM I2C controller.

Signed-off-by: Tali Perry <tali.perry1@...il.com>
---
 .../bindings/i2c/nuvoton,npcm7xx-i2c.yaml     | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/nuvoton,npcm7xx-i2c.yaml

diff --git a/Documentation/devicetree/bindings/i2c/nuvoton,npcm7xx-i2c.yaml b/Documentation/devicetree/bindings/i2c/nuvoton,npcm7xx-i2c.yaml
new file mode 100644
index 000000000000..e3ef2d36f372
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/nuvoton,npcm7xx-i2c.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/nuvoton,npcm7xx-i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: nuvoton NPCM7XX I2C Controller Device Tree Bindings
+
+description: |
+  The NPCM750x includes sixteen I2C bus controllers. All Controllers support
+  both master and slave mode. Each controller can switch between master and slave
+  at run time (i.e. IPMB mode). Each controller has two 16 byte HW FIFO for TX and
+  RX.
+
+maintainers:
+  - Tali Perry <tali.perry1@...il.com>
+
+properties:
+  compatible:
+    const: nuvoton,npcm7xx-i2c
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+    description: Reference clock for the I2C bus
+
+  clock-frequency:
+    description: Desired I2C bus clock frequency in Hz. If not specified,
+                 the default 100 kHz frequency will be used.
+                 possible values are 100000, 400000 and 1000000.
+    default: 100000
+    enum: [100000, 400000, 1000000]
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/nuvoton,npcm7xx-clock.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    i2c0: i2c@...00 {
+        reg = <0x80000 0x1000>;
+        clocks = <&clk NPCM7XX_CLK_APB2>;
+        clock-frequency = <100000>;
+        interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
+        compatible = "nuvoton,npcm750-i2c";
+    };
+
+...
-- 
2.22.0