linux-kernel - [PATCH v2 03/19] dt-bindings: power: mediatek: Add bindings for MediaTek SCPSYS

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Message-ID: <20220714122837.20094-4-tinghan.shen@mediatek.com>
Date:   Thu, 14 Jul 2022 20:28:21 +0800
From:   Tinghan Shen <tinghan.shen@...iatek.com>
To:     Yong Wu <yong.wu@...iatek.com>, Joerg Roedel <joro@...tes.org>,
        "Will Deacon" <will@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        Lee Jones <lee.jones@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        "Tinghan Shen" <tinghan.shen@...iatek.com>,
        Chun-Jie Chen <chun-jie.chen@...iatek.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        "MandyJH Liu" <mandyjh.liu@...iatek.com>,
        Weiyi Lu <weiyi.lu@...iatek.com>
CC:     <iommu@...ts.linux.dev>, <linux-mediatek@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH v2 03/19] dt-bindings: power: mediatek: Add bindings for MediaTek SCPSYS

The System Control Processor System (SCPSYS) has several power
management related tasks in the system. Add the bindings for it.

Signed-off-by: Tinghan Shen <tinghan.shen@...iatek.com>
---
 .../bindings/mfd/mediatek,scpsys.yaml         | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/mediatek,scpsys.yaml

diff --git a/Documentation/devicetree/bindings/mfd/mediatek,scpsys.yaml b/Documentation/devicetree/bindings/mfd/mediatek,scpsys.yaml
new file mode 100644
index 000000000000..a8b9220f2f27
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/mediatek,scpsys.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/mediatek,scpsys.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek System Control Processor System
+
+maintainers:
+  - MandyJH Liu <mandyjh.liu@...iatek.com>
+
+description:
+  MediaTek System Control Processor System (SCPSYS) has several
+  power management tasks. The tasks include MTCMOS power
+  domain control, thermal measurement, DVFS, etc.
+
+properties:
+  compatible:
+    items:
+      - const: mediatek,scpsys
+      - const: syscon
+      - const: simple-mfd
+
+  reg:
+    maxItems: 1
+
+  power-controller:
+    $ref: /schemas/power/mediatek,power-controller.yaml#
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt8195-clk.h>
+    #include <dt-bindings/power/mt8195-power.h>
+
+    syscon@...06000 {
+        compatible = "mediatek,scpsys", "syscon", "simple-mfd";
+        reg = <0x10006000 0x100>;
+
+        spm: power-controller {
+            compatible = "mediatek,mt8195-power-controller";
+            #address-cells = <1>;
+            #size-cells = <0>;
+            #power-domain-cells = <1>;
+
+            /* sample of power domain nodes */
+            power-domain@...195_POWER_DOMAIN_PCIE_PHY {
+                    reg = <MT8195_POWER_DOMAIN_PCIE_PHY>;
+                    #power-domain-cells = <0>;
+            };
+
+            power-domain@...195_POWER_DOMAIN_SSUSB_PCIE_PHY {
+                    reg = <MT8195_POWER_DOMAIN_SSUSB_PCIE_PHY>;
+                    #power-domain-cells = <0>;
+            };
+        };
+    };
-- 
2.18.0