From: Lukasz Luba <lukasz.luba@arm.com>
To: linux-kernel@vger.kernel.org
Cc: lukasz.luba@arm.com, dietmar.eggemann@arm.com,
viresh.kumar@linaro.org, rafael@kernel.org,
daniel.lezcano@linaro.org, nm@ti.com, sboyd@kernel.org,
mka@chromium.org, dianders@chromium.org, robh+dt@kernel.org,
devicetree@vger.kernel.org, linux-pm@vger.kernel.org
Subject: [RFC][PATCH 1/2] dt-bindings: power: add Energy Model bindings
Date: Mon, 21 Feb 2022 22:51:30 +0000 [thread overview]
Message-ID: <20220221225131.15836-2-lukasz.luba@arm.com> (raw)
In-Reply-To: <20220221225131.15836-1-lukasz.luba@arm.com>
Add DT bindings for the Energy Model information.
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
---
.../bindings/power/energy-model.yaml | 51 +++++++++++++++++++
1 file changed, 51 insertions(+)
create mode 100644 Documentation/devicetree/bindings/power/energy-model.yaml
diff --git a/Documentation/devicetree/bindings/power/energy-model.yaml b/Documentation/devicetree/bindings/power/energy-model.yaml
new file mode 100644
index 000000000000..804a9b324925
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/energy-model.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/energy-model.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Energy Model Bindings
+
+maintainers:
+ - Lukasz Luba <lukasz.luba@arm.com>
+
+description: |+
+ Devices work at specific performance states (frequencies). The power which
+ is used at a given performance state is an important information. A framework
+ which maintains this information is Energy Model. This document defines
+ bindings for these Energy Model performance states applicable across wide
+ range of devices. For illustration purpose, this document uses GPU as a device.
+
+ This binding only supports frequency-power pairs.
+
+select: true
+
+properties:
+ operating-points:
+ $ref: /schemas/types.yaml#/definitions/uint32-matrix
+ items:
+ items:
+ - description: Frequency in kHz
+ - description: Power in uW
+
+
+additionalProperties: true
+examples:
+ {
+ gpu_energy_model: energy-model {
+ compatible = "energy-model";
+ energy-model-entries = <
+ 200000 300000
+ 297000 500000
+ 400000 800000
+ 500000 1400000
+ 600000 2000000
+ 800000 2800000
+ >;
+ };
+ };
+
+ &gpu {
+ energy-model = <&gpu_energy_model>;
+ };
+...
--
2.17.1
next prev parent reply other threads:[~2022-02-21 22:51 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-21 22:51 [RFC][PATCH 0/2] Introduce 'advanced' Energy Model in DT Lukasz Luba
2022-02-21 22:51 ` Lukasz Luba [this message]
2022-02-22 3:03 ` [RFC][PATCH 1/2] dt-bindings: power: add Energy Model bindings Viresh Kumar
2022-02-22 8:06 ` Lukasz Luba
2022-02-22 9:45 ` Viresh Kumar
2022-02-22 10:03 ` Lukasz Luba
2022-02-22 10:12 ` Viresh Kumar
2022-02-22 11:03 ` Lukasz Luba
2022-02-22 11:15 ` Viresh Kumar
2022-02-22 11:23 ` Lukasz Luba
2022-02-22 14:22 ` Rob Herring
2022-02-22 14:30 ` Lukasz Luba
2022-02-21 22:51 ` [RFC][PATCH 2/2] opp: Add support for 'advanced' Energy Model in DT Lukasz Luba
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