linux-kernel - [PATCH v3 1/3] dt-bindings: soc: nuvoton: Add NPCM BPC

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Message-ID: <20231213182845.3744685-2-tmaimon77@gmail.com>
Date:   Wed, 13 Dec 2023 20:28:43 +0200
From:   Tomer Maimon <tmaimon77@...il.com>
To:     <arnd@...db.de>, <pmenzel@...gen.mpg.de>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <avifishman70@...il.com>, <tali.perry1@...il.com>,
        <joel@....id.au>, <venture@...gle.com>, <yuenn@...gle.com>,
        <benjaminfair@...gle.com>, <j.neuschaefer@....net>
CC:     <openbmc@...ts.ozlabs.org>, <linux-gpio@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Tomer Maimon <tmaimon77@...il.com>
Subject: [PATCH v3 1/3] dt-bindings: soc: nuvoton: Add NPCM BPC

Added device tree binding documentation for Nuvoton BMC NPCM BIOS Post
Code (BPC).

The NPCM BPC monitoring two configurable I/O addresses written by the
host on the bus.

Signed-off-by: Tomer Maimon <tmaimon77@...il.com>
---
 .../soc/nuvoton/nuvoton,npcm-bpc.yaml         | 65 +++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/nuvoton/nuvoton,npcm-bpc.yaml

diff --git a/Documentation/devicetree/bindings/soc/nuvoton/nuvoton,npcm-bpc.yaml b/Documentation/devicetree/bindings/soc/nuvoton/nuvoton,npcm-bpc.yaml
new file mode 100644
index 000000000000..c04302a1d52b
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/nuvoton/nuvoton,npcm-bpc.yaml
@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/nuvoton/nuvoton,npcm-bpc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nuvoton BMC NPCM BIOS Post Code (BPC) controller
+
+maintainers:
+  - Tomer Maimon <tmaimon77@...il.com>
+
+description:
+  Nuvoton BMC NPCM BIOS Post Code (BPC) monitoring two configurable I/O
+  addresses written by the host on the bus, the capture data stored in
+  128-word FIFO.
+
+  NPCM BPC supports capture double words, when using capture
+  double word only I/O address 1 is monitored.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - nuvoton,npcm845-bpc
+          - nuvoton,npcm750-bpc
+      - const: nuvoton,npcm-bpc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  nuvoton,monitor-ports:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description:
+      Contain monitor I/O addresses on the bus, at least one monitor I/O
+      address required.
+
+  nuvoton,bpc-en-dwcapture:
+    description:
+      Set DWCAPTURE bit in BPCFEN register that enable double words capture
+      according to the first address setting.
+    type: boolean
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - nuvoton,monitor-ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    bpc: bpc@...07040 {
+        compatible = "nuvoton,npcm750-bpc", "nuvoton,npcm-bpc";
+        reg = <0xf0007040 0x20>;
+        interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
+        nuvoton,monitor-ports = <0x80>;
+    };
+...
-- 
2.34.1