linux-kernel - [PATCH 05/17] dt-bindings: soc: mediatek: apu: Add apu logger compatible

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Date:   Sat, 11 Dec 2021 01:25:53 +0800
From:   Flora Fu <flora.fu@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Yong Wu <yong.wu@...iatek.com>,
        Pi-Cheng Chen <pi-cheng.chen@...iatek.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-media@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>,
        <linaro-mm-sig@...ts.linaro.org>, Flora Fu <flora.fu@...iatek.com>,
        JB Tsai <jb.tsai@...iatek.com>
Subject: [PATCH 05/17] dt-bindings: soc: mediatek: apu: Add apu logger compatible

Add new document for apu logger compatible.

Signed-off-by: Flora Fu <flora.fu@...iatek.com>

---
 .../soc/mediatek/mediatek,apu-logger.yaml     | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/mediatek/mediatek,apu-logger.yaml

diff --git a/Documentation/devicetree/bindings/soc/mediatek/mediatek,apu-logger.yaml b/Documentation/devicetree/bindings/soc/mediatek/mediatek,apu-logger.yaml
new file mode 100644
index 000000000000..9e56fb3b8080
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/mediatek/mediatek,apu-logger.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2021 (C) MediaTek Inc.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/mediatek/mediatek,apu-logger.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: MediaTek APU Logger for debug into microprocessor
+
+description: |
+  The APU logger is for debug usage. The APU remote microprocessor's logs
+  will be output to the mapped memory and application processor can read
+  logs from the dedicated reserved registers.
+
+maintainers:
+  - Flora Fu <flora.fu@...iatek.com>
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - mediatek,apu-sw-logger
+  reg:
+    maxItems: 1
+
+  iommus:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/memory/mt8192-larb-port.h>
+    apusys_sw_logger@...00040 {
+      compatible = "mediatek,apu-sw-logger";
+      reg = <0x19000040 0x10>;
+      iommus = <&iommu_apu IOMMU_PORT_APU_DATA>;
+    };
-- 
2.18.0