linux-kernel - [PATCH v3 1/2] dt-bingings:arm:sunplus:add sp7021 compatible string to sunplus,idle-state.yaml

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Message-Id: <317c55864546698b02c39b16b082812c2ac9400c.1641432983.git.edwinchiu0505tw@gmail.com>
Date:   Thu,  6 Jan 2022 10:00:07 +0800
From:   Edwin Chiu <edwinchiu0505tw@...il.com>
To:     robh+dt@...nel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, rafael@...nel.org,
        daniel.lezcano@...aro.org, linux-pm@...r.kernel.org
Cc:     Edwin Chiu <edwinchiu0505tw@...il.com>
Subject: [PATCH v3 1/2] dt-bingings:arm:sunplus:add sp7021 compatible string to sunplus,idle-state.yaml

Add the compatible string for cpuidle state on sp7021

Signed-off-by: Edwin Chiu <edwinchiu0505tw@...il.com>
---
Changes in v3
 - Align email address of sob and sender
 - Added sp7021 compatible string

 .../bindings/arm/sunplus/sunplus,idle-state.yaml   | 59 ++++++++++++++++++++++
 MAINTAINERS                                        |  5 ++
 2 files changed, 64 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/sunplus/sunplus,idle-state.yaml

diff --git a/Documentation/devicetree/bindings/arm/sunplus/sunplus,idle-state.yaml b/Documentation/devicetree/bindings/arm/sunplus/sunplus,idle-state.yaml
new file mode 100644
index 0000000..64281ba
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/sunplus/sunplus,idle-state.yaml
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/sunplus/sunplus,idle-state.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus SOC cpuidle state
+
+maintainers:
+  - Edwin Chiu<edwinchiu0505tw@...il.com>
+
+description: |
+  Sunplus SOC cpuidle state
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - sunplus,sp7021-idle-state
+
+  entry-latency-us:
+    description:
+      Worst case latency in microseconds required to enter the idle state.
+
+  exit-latency-us:
+    description:
+      Worst case latency in microseconds required to exit the idle state.
+      The exit-latency-us duration may be guaranteed only after
+      entry-latency-us has passed.
+
+  min-residency-us:
+    description:
+      Minimum residency duration in microseconds, inclusive of preparation
+      and entry, for this idle state to be considered worthwhile energy wise
+      (refer to section 2 of this document for a complete description).
+
+required:
+  - compatible
+  - entry-latency-us
+  - exit-latency-us
+  - min-residency-us
+
+additionalProperties: true
+
+examples:
+  - |
+
+    idle-state {
+      CPU_IDLE: cpu_idle {
+        compatible = "sunplus,sp7021-idle-state";
+        entry-latency-us = <8000>;
+        exit-latency-us = <700>;
+        min-residency-us = <9000>;
+      };
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index e0dca8f..22cfafe 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18252,6 +18252,11 @@ L:	netdev@...r.kernel.org
 S:	Maintained
 F:	drivers/net/ethernet/dlink/sundance.c
 
+SUNPLUS CPUIDLE DRIVER
+M:	Edwin Chiu <edwinchiu0505tw@...il.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/arm/sunplus/sunplus,idle-state.yaml
+
 SUPERH
 M:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
 M:	Rich Felker <dalias@...c.org>
-- 
2.7.4