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From: Rob Herring <robh@kernel.org>
To: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Cc: Andy Gross <agross@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Mark Rutland <mark.rutland@arm.com>,
	devicetree@vger.kernel.org, Borislav Petkov <bp@alien8.de>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Tony Luck <tony.luck@intel.com>,
	James Morse <james.morse@arm.com>,
	Robert Richter <rrichter@marvell.com>,
	linux-edac@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	Stephen Boyd <swboyd@chromium.org>,
	Evan Green <evgreen@chromium.org>,
	tsoni@codeaurora.org, psodagud@codeaurora.org
Subject: Re: [PATCH 1/2] dt-bindings: edac: Add DT bindings for Kryo EDAC
Date: Wed, 18 Dec 2019 17:37:14 -0600
Message-ID: <20191218233714.GA30302@bogus> (raw)
In-Reply-To: <0101016ed57a3259-eee09e9e-e99a-40f1-ab1c-63e58a42615c-000000@us-west-2.amazonses.com>

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
> 

  reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <cover.1575529553.git.saiprakash.ranjan@codeaurora.org>
2019-12-05  9:53 ` Sai Prakash Ranjan
2019-12-18 23:37   ` Rob Herring [this message]
2019-12-19  6:50     ` Sai Prakash Ranjan
2019-12-19 13:58       ` Rob Herring
2019-12-19 14:48         ` Sai Prakash Ranjan
2020-01-15 18:48   ` James Morse
2020-01-24 14:21     ` Sai Prakash Ranjan
2019-12-05  9:53 ` [PATCH 2/2] drivers: edac: Add EDAC support for Kryo CPU caches Sai Prakash Ranjan
     [not found] ` <0101016ed57a6311-e815485c-4b77-4342-a3de-203673941602-000000@us-west-2.amazonses.com>
2019-12-11 19:32   ` Evan Green
     [not found]     ` <5df16ebe.1c69fb81.6481f.a011@mx.google.com>
2019-12-13  5:31       ` Sai Prakash Ranjan
     [not found] ` <0101016ed57a6559-46c6c649-db28-4945-a11c-7441b8e9ac5b-000000@us-west-2.amazonses.com>
2019-12-30 11:50   ` Borislav Petkov
2020-01-13  5:44     ` Sai Prakash Ranjan
2020-01-15 18:49       ` James Morse
2020-01-24 14:52         ` Sai Prakash Ranjan

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