linux-kernel - [PATCH v3 1/3] dt-bindings: reset: Add Armada8K reset controller

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Message-ID: <20250227192536.2426490-2-dingwei@marvell.com>
Date: Thu, 27 Feb 2025 11:25:34 -0800
From: Wilson Ding <dingwei@...vell.com>
To: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC: <andrew@...n.ch>, <gregory.clement@...tlin.com>,
        <sebastian.hesselbarth@...il.com>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <p.zabel@...gutronix.de>,
        <salee@...vell.com>, <gakula@...vell.com>,
        Wilson Ding <dingwei@...vell.com>
Subject: [PATCH v3 1/3] dt-bindings: reset: Add Armada8K reset controller

Add device-tree binding documentation for the Armada8K reset driver and
create the new head file for the reset line index definitions.

Signed-off-by: Wilson Ding <dingwei@...vell.com>
---
 .../reset/marvell,armada8k-reset.yaml         | 48 +++++++++++++++++++
 .../reset/marvell,armada8k-reset.h            | 27 +++++++++++
 2 files changed, 75 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/marvell,armada8k-reset.yaml
 create mode 100644 include/dt-bindings/reset/marvell,armada8k-reset.h

diff --git a/Documentation/devicetree/bindings/reset/marvell,armada8k-reset.yaml b/Documentation/devicetree/bindings/reset/marvell,armada8k-reset.yaml
new file mode 100644
index 000000000000..9af352f528de
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/marvell,armada8k-reset.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2025 Wilson Ding <dingwei@...vell.com>
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/marvell,armada8k-reset.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell Armada8K reset controller
+
+maintainers:
+  - Wilson Ding <dingwei@...vell.com>
+
+description: The reset controller node must be a sub-node of the system
+  controller node on Armada7K/8K or CN913x SoCs.
+
+properties:
+  compatible:
+    const: marvell,armada8k-reset
+
+  reg:
+    description:
+      The register offset (to syscon register address) and size
+    maxItems: 1
+
+  "#reset-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    syscon0: system-controller@...000 {
+        compatible = "syscon", "simple-mfd";
+        reg = <0x440000 0x2000>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        swrst: reset-controller@268 {
+            compatible = "marvell,armada8k-reset";
+            reg = <0x268 0x4>;
+            #reset-cells = <1>;
+        };
+    };
diff --git a/include/dt-bindings/reset/marvell,armada8k-reset.h b/include/dt-bindings/reset/marvell,armada8k-reset.h
new file mode 100644
index 000000000000..18c6f4f761e2
--- /dev/null
+++ b/include/dt-bindings/reset/marvell,armada8k-reset.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (c) 2025, Marvell. All Rights Reserved.
+ */
+
+#ifndef _DT_BINDINGS_MARVELL_ARMADA8K_RESET_H_
+#define _DT_BINDINGS_MARVELL_ARMADA8K_RESET_H_
+
+#define CP110_RESET_AUDIO		0
+#define CP110_RESET_TDM			1
+#define CP110_RESET_ICU			2
+#define CP110_RESET_PP2			3
+#define CP110_RESET_SDIO		4
+#define CP110_RESET_XOR1		7
+#define CP110_RESET_XOR0		8
+#define CP110_RESET_PCIE0_X1		11
+#define CP110_RESET_PCIE1_X1		12
+#define CP110_RESET_PCIE_X4		13
+#define CP110_RESET_SATA		15
+#define CP110_RESET_USB3_HOST0		22
+#define CP110_RESET_USB3_HOST1		23
+#define CP110_RESET_USB3_DEV		24
+#define CP110_RESET_EIP150F		25
+#define CP110_RESET_EIP197		26
+#define CP110_RESET_MSS			29
+
+#endif /* _DT_BINDINGS_MARVELL_ARMADA8K_RESET_H_ */
-- 
2.43.0