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[v6,3/9] dt-bindings: arm: tegra: Add NVIDIA Tegra194 axi2apb binding

Message ID 20220511201651.30695-5-sumitg@nvidia.com
State Accepted
Commit 3bf80f8d4fd91f1af09272416348a428e6430fc1
Headers show
Series CBB driver for Tegra194, Tegra234 & Tegra-Grace | expand

Commit Message

Sumit Gupta May 11, 2022, 8:16 p.m. UTC 
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>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../arm/tegra/nvidia,tegra194-axi2apb.yaml    | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/tegra/nvidia,tegra194-axi2apb.yaml
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Patch

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>;
+    };