linux-kernel - [PATCH v1 1/3] dt-binding: aspeed: Add LPC PCC controller

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Message-ID: <20250217114831.3225970-2-kevin_chen@aspeedtech.com>
Date: Mon, 17 Feb 2025 19:48:29 +0800
From: Kevin Chen <kevin_chen@...eedtech.com>
To: <lee@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
	<conor+dt@...nel.org>, <joel@....id.au>, <andrew@...econstruct.com.au>,
	<chiawei_wang@...eedtech.com>, <linux-aspeed@...ts.ozlabs.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
CC: Kevin Chen <kevin_chen@...eedtech.com>
Subject: [PATCH v1 1/3] dt-binding: aspeed: Add LPC PCC controller

Add dt-bindings for Aspeed for Aspeed LPC POST code capture controller.

Signed-off-by: Kevin Chen <kevin_chen@...eedtech.com>
---
 .../devicetree/bindings/mfd/aspeed-lpc.yaml   | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/aspeed-lpc.yaml b/Documentation/devicetree/bindings/mfd/aspeed-lpc.yaml
index 5dfe77aca167..367847bd7e75 100644
--- a/Documentation/devicetree/bindings/mfd/aspeed-lpc.yaml
+++ b/Documentation/devicetree/bindings/mfd/aspeed-lpc.yaml
@@ -149,6 +149,35 @@ patternProperties:
       - interrupts
       - snoop-ports
 
+  "^lpc-pcc@[0-9a-f]+$":
+    type: object
+    additionalProperties: false
+
+    description:
+      The LPC pcc interface allows the BMC to listen on and record the data
+      bytes written by the Host to the targeted LPC I/O pots.
+
+    properties:
+      compatible:
+        items:
+          - enum:
+              - aspeed,ast2600-lpc-pcc
+
+      reg:
+        maxItems: 1
+
+      interrupts:
+        maxItems: 1
+
+      pcc-ports:
+        $ref: /schemas/types.yaml#/definitions/uint32-array
+        description: The LPC I/O ports to pcc
+
+    required:
+      - compatible
+      - interrupts
+      - pcc-ports
+
   "^uart-routing@[0-9a-f]+$":
     $ref: /schemas/soc/aspeed/uart-routing.yaml#
     description: The UART routing control under LPC register space
@@ -176,6 +205,13 @@ examples:
         #size-cells = <1>;
         ranges = <0x0 0x1e789000 0x1000>;
 
+        lpc_pcc: lpc-pcc@0 {
+            compatible = "aspeed,ast2600-lpc-pcc";
+            reg = <0x0 0x140>;
+            interrupts = <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
+            pcc-ports = <0x80>;
+        };
+
         lpc_ctrl: lpc-ctrl@80 {
             compatible = "aspeed,ast2600-lpc-ctrl";
             reg = <0x80 0x80>;
-- 
2.34.1