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SubjectRe: [PATCH 1/2] dt-bindings: edac: Add DT bindings for Kryo EDAC
On Thu, Dec 05, 2019 at 09:53:05AM +0000, Sai Prakash Ranjan wrote:
> This adds DT bindings for Kryo EDAC implemented with RAS
> extensions on KRYO{3,4}XX CPU cores for reporting of cache
> errors.
>
> Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
> ---
> .../bindings/edac/qcom-kryo-edac.yaml | 67 +++++++++++++++++++
> 1 file changed, 67 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/edac/qcom-kryo-edac.yaml
>
> diff --git a/Documentation/devicetree/bindings/edac/qcom-kryo-edac.yaml b/Documentation/devicetree/bindings/edac/qcom-kryo-edac.yaml
> new file mode 100644
> index 000000000000..1a39429a73b4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/edac/qcom-kryo-edac.yaml
> @@ -0,0 +1,67 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/edac/qcom-kryo-edac.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Kryo Error Detection and Correction(EDAC)
> +
> +maintainers:
> + - Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
> +
> +description: |
> + Kryo EDAC is defined to describe on-chip error detection and correction
> + for the Kryo CPU cores which implement RAS extensions. It will report
> + all Single Bit Errors and Double Bit Errors found in L1/L2 caches in
> + in two registers ERXSTATUS_EL1 and ERXMISC0_EL1. L3-SCU cache errors
> + are reported in ERR1STATUS and ERR1MISC0 registers.
> + ERXSTATUS_EL1 - Selected Error Record Primary Status Register, EL1
> + ERXMISC0_EL1 - Selected Error Record Miscellaneous Register 0, EL1
> + ERR1STATUS - Error Record Primary Status Register
> + ERR1MISC0 - Error Record Miscellaneous Register 0
> + Current implementation of Kryo ECC(Error Correcting Code) mechanism is
> + based on interrupts.
> +
> +properties:
> + compatible:
> + enum:
> + - qcom,kryo-edac
> +
> + interrupts:
> + minItems: 1
> + maxItems: 4
> + items:
> + - description: l1-l2 cache faultirq interrupt
> + - description: l1-l2 cache errirq interrupt
> + - description: l3-scu cache errirq interrupt
> + - description: l3-scu cache faultirq interrupt
> +
> + interrupt-names:
> + minItems: 1
> + maxItems: 4
You are saying only these combinations are valid:

l1-l2-faultirq

l1-l2-faultirq
l1-l2-errirq

l1-l2-faultirq
l1-l2-errirq
l3-scu-errirq

l1-l2-faultirq
l1-l2-errirq
l3-scu-errirq
l3-scu-faultirq

Is that your intent?

> + items:
> + - const: l1-l2-faultirq
> + - const: l1-l2-errirq
> + - const: l3-scu-errirq
> + - const: l3-scu-faultirq
> +
> +required:
> + - compatible
> + - interrupts
> + - interrupt-names
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> + kryo_edac {
> + compatible = "qcom,kryo-edac";
> + interrupts = <GIC_PPI 6 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "l1-l2-faultirq",
> + "l1-l2-errirq",
> + "l3-scu-errirq",
> + "l3-scu-faultirq";
> + };
> --
> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
> of Code Aurora Forum, hosted by The Linux Foundation
>

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