| Message ID | 20220720060016.1646317-2-appana.durga.kedareswara.rao@amd.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drivers: misc: Add support for TMR Manager and Inject IPs | expand |
On 20/07/2022 08:00, Appana Durga Kedareswara rao wrote: > From: Appana Durga Kedareswara rao <appana.durga.rao@xilinx.com> > > 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@amd.com> > Signed-off-by: Appana Durga Kedareswara rao <appana.durga.rao@xilinx.com> Use one identity, not two. > --- > Changes for v2: > --> Improved description for xlnx,magic1 property as suggested by Krzysztof. > --> Fixed style issues (indentation of example node title description > etc..) > .../bindings/misc/xlnx,tmr-manager.yaml | 47 +++++++++++++++++++ It's a pity it was put into misc, but since we did not reach consensus during last discussion and there is no fault-handler-like subsystem yet, we might move it there later: Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
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..f7e6ac1d5867 --- /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.rao@xilinx.com> + +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>; + };