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@xxxxxxxxxx> Signed-off-by: Thierry Reding <treding@xxxxxxxxxx> Reviewed-by: Rob Herring <robh@xxxxxxxxxx> --- .../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@xxxxxxxxxx> + +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
