linux-kernel - [PATCH v2 2/3] dt-bindings: soc: add loongson-2 pm

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Message-Id: <20230522093156.7108-3-zhuyinbo@loongson.cn>
Date:   Mon, 22 May 2023 17:31:55 +0800
From:   Yinbo Zhu <zhuyinbo@...ngson.cn>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Huacai Chen <chenhuacai@...nel.org>,
        WANG Xuerui <kernel@...0n.name>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Pavel Machek <pavel@....cz>,
        Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Marc Zyngier <maz@...nel.org>,
        Youling Tang <tangyouling@...ngson.cn>,
        Baoqi Zhang <zhangbaoqi@...ngson.cn>,
        Arnd Bergmann <arnd@...db.de>, Yun Liu <liuyun@...ngson.cn>,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, loongarch@...ts.linux.dev
Cc:     Jianmin Lv <lvjianmin@...ngson.cn>, wanghongliang@...ngson.cn,
        Liu Peibao <liupeibao@...ngson.cn>,
        loongson-kernel@...ts.loongnix.cn, Yinbo Zhu <zhuyinbo@...ngson.cn>
Subject: [PATCH v2 2/3] dt-bindings: soc: add loongson-2 pm

Add the Loongson-2 SoC Power Management Controller binding with DT
schema format using json-schema.

Signed-off-by: Yinbo Zhu <zhuyinbo@...ngson.cn>
---
 .../soc/loongson/loongson,ls2k-pmc.yaml       | 51 +++++++++++++++++++
 MAINTAINERS                                   |  6 +++
 2 files changed, 57 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/loongson/loongson,ls2k-pmc.yaml

diff --git a/Documentation/devicetree/bindings/soc/loongson/loongson,ls2k-pmc.yaml b/Documentation/devicetree/bindings/soc/loongson/loongson,ls2k-pmc.yaml
new file mode 100644
index 000000000000..ddad62889c60
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/loongson/loongson,ls2k-pmc.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/loongson/loongson,ls2k-pmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Loongson-2 Power Manager controller
+
+maintainers:
+  - Yinbo Zhu <zhuyinbo@...ngson.cn>
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - loongson,ls2k-pmc
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  suspend-address:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      The "suspend-address" is a deep sleep state (Suspend To RAM)
+      firmware entry address which was jumped from kernel and it's
+      value was dependent on specific platform firmware code. In
+      addition, the PM need according to it to indicate that current
+      SoC whether support Suspend To RAM.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    pmc: pm@...27000 {
+        compatible = "loongson,ls2k-pmc", "syscon";
+        reg = <0x1fe27000 0x58>;
+        interrupt-parent = <&liointc1>;
+        interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
+        suspend-address = <0x1c000500>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 7a91f14cad2e..bcd05f1fa5c1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12190,6 +12190,12 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/hwinfo/loongson,ls2k-chipid.yaml
 F:	drivers/soc/loongson/loongson2_guts.c
 
+LOONGSON-2 SOC SERIES PM DRIVER
+M:	Yinbo Zhu <zhuyinbo@...ngson.cn>
+L:	linux-pm@...r.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/soc/loongson/loongson,ls2k-pmc.yaml
+
 LOONGSON-2 SOC SERIES PINCTRL DRIVER
 M:	zhanghongchen <zhanghongchen@...ngson.cn>
 M:	Yinbo Zhu <zhuyinbo@...ngson.cn>
-- 
2.20.1