Triple Modular Redundancy(TMR) subsystem contains three microblaze cores, subsystem is fault-tolerant and continues to operate nominally after encountering an error. Together with the capability to detect and recover from errors, the implementation ensures the reliability of the entire subsystem. TMR Manager is responsible for performing recovery of the subsystem detects the fault via a break signal it invokes microblaze software break handler which calls the tmr manager driver api to update the error count and status. Signed-off-by: Appana Durga Kedareswara rao <appana.durga.kedareswara.rao@xxxxxxx> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> --- Changes for v5: --> None. Changes for v4: --> None. Changes for v3: --> Added Krzysztof Reviewed by. Changes for v2: --> Added minimum and maximum values for xlnx,magic1 property as suggested by Michal. --> Fixed 80 char limit in description as suggested by Michal. .../bindings/misc/xlnx,tmr-manager.yaml | 47 +++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 Documentation/devicetree/bindings/misc/xlnx,tmr-manager.yaml diff --git a/Documentation/devicetree/bindings/misc/xlnx,tmr-manager.yaml b/Documentation/devicetree/bindings/misc/xlnx,tmr-manager.yaml new file mode 100644 index 000000000000..27de12147a52 --- /dev/null +++ b/Documentation/devicetree/bindings/misc/xlnx,tmr-manager.yaml @@ -0,0 +1,47 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/misc/xlnx,tmr-manager.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Xilinx Triple Modular Redundancy(TMR) Manager IP + +maintainers: + - Appana Durga Kedareswara rao <appana.durga.kedareswara.rao@xxxxxxx> + +description: | + The Triple Modular Redundancy(TMR) Manager is responsible for handling the + TMR subsystem state, including fault detection and error recovery. The core + is triplicated in each of the sub-blocks in the TMR subsystem, and provides + majority voting of its internal state. + +properties: + compatible: + enum: + - xlnx,tmr-manager-1.0 + + reg: + maxItems: 1 + + xlnx,magic1: + minimum: 0 + maximum: 255 + description: + Magic byte 1, When configured it allows the controller to perform + recovery. + $ref: /schemas/types.yaml#/definitions/uint32 + +required: + - compatible + - reg + - xlnx,magic1 + +additionalProperties: false + +examples: + - | + tmr-manager@44a10000 { + compatible = "xlnx,tmr-manager-1.0"; + reg = <0x44a10000 0x10000>; + xlnx,magic1 = <0x46>; + }; -- 2.25.1
