linux-kernel - [PATCH v5 06/20] dt-bindings: power: mediatek: Add bindings for MediaTek SCPSYS

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Date:   Thu, 4 Aug 2022 10:15:39 +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>,
        Robin Murphy <robin.murphy@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Lee Jones <lee@...nel.org>,
        "Matthias Brugger" <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Tinghan Shen <tinghan.shen@...iatek.com>,
        MandyJH Liu <mandyjh.liu@...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 v5 06/20] 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>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../bindings/mfd/mediatek,mt8195-scpsys.yaml  | 67 +++++++++++++++++++
 .../power/mediatek,power-controller.yaml      |  2 +-
 2 files changed, 68 insertions(+), 1 deletion(-)
 create mode 100644
 Documentation/devicetree/bindings/mfd/mediatek,mt8195-scpsys.yaml

diff --git
 a/Documentation/devicetree/bindings/mfd/mediatek,mt8195-scpsys.yaml
 b/Documentation/devicetree/bindings/mfd/mediatek,mt8195-scpsys.yaml
new file mode 100644
index 0000000000000..3737207d85046
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/mediatek,mt8195-scpsys.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/mediatek,mt8195-scpsys.yaml#
+$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:
+      - enum:
+          - mediatek,mt8167-scpsys
+          - mediatek,mt8173-scpsys
+          - mediatek,mt8183-scpsys
+          - mediatek,mt8192-scpsys
+          - mediatek,mt8195-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,mt8195-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>;
+        };
+      };
+    };
diff --git
 a/Documentation/devicetree/bindings/power/mediatek,power-controller.yaml
 b/Documentation/devicetree/bindings/power/mediatek,power-controller.yaml
index 03b7f6aa591d4..605ec7ab5f633 100644
--- a/Documentation/devicetree/bindings/power/mediatek,power-controller.yaml
+++ b/Documentation/devicetree/bindings/power/mediatek,power-controller.yaml
@@ -135,7 +135,7 @@ examples:
         #size-cells = <2>;
 
         scpsys: syscon@...06000 {
-            compatible = "syscon", "simple-mfd";
+            compatible = "mediatek,mt8173-scpsys", "syscon", "simple-mfd";
             reg = <0 0x10006000 0 0x1000>;
 
             spm: power-controller {
-- 
2.18.0