linux-kernel - [PATCH v7 7/9] dt-bindings: mfd: Add bindings for Ampere Altra SMPro MFD driver

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Date:   Mon, 21 Mar 2022 15:13:53 +0700
From:   Quan Nguyen <quan@...amperecomputing.com>
To:     Lee Jones <lee.jones@...aro.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Jonathan Corbet <corbet@....net>,
        Derek Kiernan <derek.kiernan@...inx.com>,
        Dragan Cvetic <dragan.cvetic@...inx.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Quan Nguyen <quan@...amperecomputing.com>,
        Thu Nguyen <thu@...amperecomputing.com>,
        Gustavo Pimentel <Gustavo.Pimentel@...opsys.com>,
        linux-kernel@...r.kernel.org (open list),
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS),
        linux-hwmon@...r.kernel.org (open list:HARDWARE MONITORING),
        linux-doc@...r.kernel.org (open list:DOCUMENTATION),
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>
Cc:     Open Source Submission <patches@...erecomputing.com>,
        Phong Vo <phong@...amperecomputing.com>,
        "Thang Q . Nguyen" <thang@...amperecomputing.com>
Subject: [PATCH v7 7/9] dt-bindings: mfd: Add bindings for Ampere Altra SMPro MFD driver

Adds device tree bindings for SMPro MFD driver found on the Mt.Jade
hardware reference platform with Ampere's Altra Processor family.

The SMpro co-processor on Ampere Altra processor family is to monitor
and report various data included hwmon-related info, RAS errors, and
other miscellaneous information.

Signed-off-by: Quan Nguyen <quan@...amperecomputing.com>
Reviewed-by: Rob Herring <robh@...nel.org>
---
Changes in v7:
  + None

Changes in v6:
  + None

 .../devicetree/bindings/mfd/ampere,smpro.yaml | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/ampere,smpro.yaml

diff --git a/Documentation/devicetree/bindings/mfd/ampere,smpro.yaml b/Documentation/devicetree/bindings/mfd/ampere,smpro.yaml
new file mode 100644
index 000000000000..c29d975c1bc3
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/ampere,smpro.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/ampere,smpro.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ampere Altra SMPro firmware driver
+
+maintainers:
+  - Quan Nguyen <quan@...amperecomputing.com>
+
+description: |
+  Ampere Altra SMPro firmware may contain different blocks like hardware
+  monitoring, error monitoring and other miscellaneous features.
+
+properties:
+  compatible:
+    enum:
+      - ampere,smpro
+
+  reg:
+    description:
+      I2C device address.
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        smpro@4f {
+            compatible = "ampere,smpro";
+            reg = <0x4f>;
+        };
+    };
-- 
2.35.1