linux-kernel - [PATCH v2 1/2] dt-bindings: devapc: add bindings for mtk-devapc

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Message-ID: <1594285927-1840-2-git-send-email-neal.liu@mediatek.com>
Date:   Thu, 9 Jul 2020 17:12:06 +0800
From:   Neal Liu <neal.liu@...iatek.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
CC:     Neal Liu <neal.liu@...iatek.com>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        lkml <linux-kernel@...r.kernel.org>, <wsd_upstream@...iatek.com>
Subject: [PATCH v2 1/2] dt-bindings: devapc: add bindings for mtk-devapc

Add bindings for mtk-devapc.

Signed-off-by: Neal Liu <neal.liu@...iatek.com>
---
 .../devicetree/bindings/soc/mediatek/devapc.yaml   |   82 ++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/mediatek/devapc.yaml

diff --git a/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml b/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml
new file mode 100644
index 0000000..f08243e
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# # Copyright 2020 MediaTek Inc.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/mediatek/devapc.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: MediaTek Device Access Permission Control driver
+
+description: |
+  MediaTek bus fabric provides TrustZone security support and data
+  protection to prevent slaves from being accessed by unexpected masters.
+  The security violation is logged and sent to the processor for further
+  analysis and countermeasures.
+
+maintainers:
+  - Neal Liu <neal.liu@...iatek.com>
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt6779-devapc
+
+  reg:
+    description: The base address of devapc register bank
+    maxItems: 1
+
+  interrupts:
+    description: A single interrupt specifier
+    maxItems: 1
+
+  clocks:
+    description: Contains module clock source and clock names
+    maxItems: 1
+
+  clock-names:
+    description: Names of the clocks list in clocks property
+    maxItems: 1
+
+  mediatek-slv_type_num:
+    description: Numbers of slave type in mediatek platform
+    maxItems: 1
+
+  mediatek-vio_dbgs:
+    description: The mask bit and start bit of devapc violation debug registers
+    maxItems: 5
+
+  mediatek-pds_offset:
+    description: The offset of devapc pds registers
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - mediatek-slv_type_num
+  - mediatek-vio_dbgs
+  - mediatek-pds_offset
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/mt6779-clk.h>
+
+    devapc: devapc@...07000 {
+      compatible = "mediatek,mt6779-devapc";
+      reg = <0x10207000 0x1000>;
+      interrupts = <GIC_SPI 168 IRQ_TYPE_LEVEL_LOW>;
+      clocks = <&infracfg_ao CLK_INFRA_DEVICE_APC>;
+      clock-names = "devapc-infra-clock";
+
+      mediatek-slv_type_num = /bits/ 8 <1>;
+      mediatek-vio_dbgs = <0x0000FFFF 0x0>,
+                          <0x003F0000 0x10>,
+                          <0x00400000 0x16>,
+                          <0x00800000 0x17>,
+                          <0x0F000000 0x18>;
+      mediatek-pds_offset = <0x0 0x400 0x900 0x904
+                             0xF00 0xF10 0xF14 0xF20>;
+    };
-- 
1.7.9.5