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Message-Id: <20210422090843.4614-2-quan@os.amperecomputing.com>
Date: Thu, 22 Apr 2021 16:08:40 +0700
From: Quan Nguyen <quan@...amperecomputing.com>
To: Joel Stanley <joel@....id.au>, Andrew Jeffery <andrew@...id.au>,
Jean Delvare <jdelvare@...e.com>,
Guenter Roeck <linux@...ck-us.net>,
Rob Herring <robh+dt@...nel.org>,
Lee Jones <lee.jones@...aro.org>,
Jonathan Corbet <corbet@....net>, linux-hwmon@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-doc@...r.kernel.org, linux-aspeed@...ts.ozlabs.org,
openbmc@...ts.ozlabs.org
Cc: Open Source Submission <patches@...erecomputing.com>,
Phong Vo <phong@...amperecomputing.com>,
"Thang Q . Nguyen" <thang@...amperecomputing.com>
Subject: [PATCH v4 1/4] dt-bindings: mfd: Add bindings for Ampere Altra SMPro drivers
Adds device tree bindings for SMPro 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. This parent SMPro MFD driver creates
a single simple register map to be shared by all sub-devices and leave
all the specific to be handled by the child drivers.
Signed-off-by: Quan Nguyen <quan@...amperecomputing.com>
---
Changes in v4:
+ Revised the commit message to clarify how the specific info will
be handled commented by Rob.
Changes in v3:
+ Supported list of compatible string [Rob]
+ Introduced reg property in DT to specify reg offset [Rob]
+ Updated description and other minor changes in yaml file [Rob]
Changes in v2:
+ Changed "ampere,ac01-smpro" to "ampere,smpro" [Quan]
.../bindings/hwmon/ampere,ac01-hwmon.yaml | 28 +++++
.../devicetree/bindings/mfd/ampere,smpro.yaml | 105 ++++++++++++++++++
2 files changed, 133 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/ampere,ac01-hwmon.yaml
create mode 100644 Documentation/devicetree/bindings/mfd/ampere,smpro.yaml
diff --git a/Documentation/devicetree/bindings/hwmon/ampere,ac01-hwmon.yaml b/Documentation/devicetree/bindings/hwmon/ampere,ac01-hwmon.yaml
new file mode 100644
index 000000000000..fbf7ec754160
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/ampere,ac01-hwmon.yaml
@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/ampere,ac01-hwmon.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Hardware monitoring driver for the Ampere Altra SMPro
+
+maintainers:
+ - Quan Nguyen <quan@...amperecomputing.com>
+
+description: |
+ This module is part of the Ampere Altra SMPro multi-function device. For more
+ details see ../mfd/ampere,smpro.yaml.
+
+properties:
+ compatible:
+ enum:
+ - ampere,ac01-hwmon
+
+ reg:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
diff --git a/Documentation/devicetree/bindings/mfd/ampere,smpro.yaml b/Documentation/devicetree/bindings/mfd/ampere,smpro.yaml
new file mode 100644
index 000000000000..5613c420869e
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/ampere,smpro.yaml
@@ -0,0 +1,105 @@
+# 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
+
+patternProperties:
+ "^hwmon(@[0-9a-f]+)?$":
+ $ref: ../hwmon/ampere,ac01-hwmon.yaml
+
+ "^misc(@[0-9a-f]+)?$":
+ type: object
+ description: |
+ This module is part of the Ampere Altra SMPro multi-function device
+ to support miscellaneous features
+ properties:
+ compatible:
+ enum:
+ - ampere,ac01-misc
+ reg:
+ maxItems: 1
+
+ required:
+ - compatible
+ - reg
+
+ "^errmon(@[0-9a-f]+)?$":
+ type: object
+ description: |
+ This module is part of the Ampere Altra SMPro multi-function device
+ that supports error monitoring feature.
+
+ properties:
+ compatible:
+ enum:
+ - ampere,ac01-errmon
+ reg:
+ maxItems: 1
+
+ required:
+ - compatible
+ - reg
+
+required:
+ - "#address-cells"
+ - "#size-cells"
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ smpro@4f {
+ compatible = "ampere,smpro";
+ reg = <0x4f>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ hwmon@10 {
+ compatible = "ampere,ac01-hwmon";
+ reg = <0x10>;
+ };
+
+ misc@b0 {
+ compatible = "ampere,ac01-misc";
+ reg = <0xb0>;
+ };
+
+ errmon@80 {
+ compatible = "ampere,ac01-errmon";
+ reg = <0x80>;
+ };
+
+ };
+ };
--
2.28.0
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