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[linux,dev-6.6,v1,1/2] dt-bindings: soc: nuvoton: Add NPCM BPC

Message ID 20240101184735.3048767-2-tmaimon77@gmail.com
State New
Headers show
Series soc: add NPCM BPC driver support | expand

Commit Message

Tomer Maimon Jan. 1, 2024, 6:47 p.m. UTC 
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@gmail.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
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Patch

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@gmail.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@f0007040 {
+        compatible = "nuvoton,npcm750-bpc", "nuvoton,npcm-bpc";
+        reg = <0xf0007040 0x20>;
+        interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
+        nuvoton,monitor-ports = <0x80>;
+    };
+...