Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates
 12.22.5.236 as permitted sender) receiver=protection.outlook.com;
 client-ip=12.22.5.236; helo=mail.nvidia.com;
From:   Sumit Gupta <sumitg@nvidia.com>
To:     <linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <thierry.reding@gmail.com>,
        <jonathanh@nvidia.com>, <robh+dt@kernel.org>
CC:     <kbuild-all@lists.01.org>, <sumitg@nvidia.com>, <bbasu@nvidia.com>,
        <vsethi@nvidia.com>, <jsequeira@nvidia.com>,
        Thierry Reding <treding@nvidia.com>
Subject: [Patch v3 3/9] dt-bindings: arm: tegra: Add NVIDIA Tegra194 axi2apb binding
Date:   Tue, 21 Dec 2021 18:21:11 +0530
Message-ID: <20211221125117.6545-4-sumitg@nvidia.com>
In-Reply-To: <20211221125117.6545-1-sumitg@nvidia.com>
References: <20211221125117.6545-1-sumitg@nvidia.com>
MIME-Version: 1.0
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Dec 2021 12:51:34.4473
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 2f40c18a-13dd-418c-2581-08d9c4809e9f
X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[12.22.5.236];Helo=[mail.nvidia.com]
X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT007.eop-nam11.prod.protection.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4818
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Add device-tree binding documentation to represent the axi2apb bridges
used by Control Backbone (CBB) 1.0 in Tegra194 SOC. All errors for APB
slaves are reported as slave error because APB bas single bit to report
error. So, CBB driver needs to further check error status registers of
all the axi2apb bridges to find error type.

Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 .../arm/tegra/nvidia,tegra194-axi2apb.yaml    | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/tegra/nvidia,tegra194-axi2apb.yaml

diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra194-axi2apb.yaml b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra194-axi2apb.yaml
new file mode 100644
index 000000000000..788a13f8aa93
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra194-axi2apb.yaml
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/arm/tegra/nvidia,tegra194-axi2apb.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: NVIDIA Tegra194 AXI2APB bridge
+
+maintainers:
+  - Sumit Gupta <sumitg@nvidia.com>
+
+properties:
+  $nodename:
+    pattern: "^axi2apb@([0-9a-f]+)$"
+
+  compatible:
+    enum:
+      - nvidia,tegra194-axi2apb
+
+  reg:
+    maxItems: 6
+    description: Physical base address and length of registers for all bridges
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    axi2apb: axi2apb@2390000 {
+      compatible = "nvidia,tegra194-axi2apb";
+      reg = <0x02390000 0x1000>,
+            <0x023a0000 0x1000>,
+            <0x023b0000 0x1000>,
+            <0x023c0000 0x1000>,
+            <0x023d0000 0x1000>,
+            <0x023e0000 0x1000>;
+    };
-- 
2.17.1