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Date:   Tue, 25 Aug 2020 09:33:45 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Lars Povlsen <lars.povlsen@...rochip.com>
Cc:     Adrian Hunter <adrian.hunter@...el.com>, SoC Team <soc@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: Re: [PATCH v4 1/3] dt-bindings: mmc: Add Sparx5 SDHCI controller bindings

On Mon, 24 Aug 2020 at 17:10, Lars Povlsen <lars.povlsen@...rochip.com> wrote:
>
> The Sparx5 SDHCI controller is based on the Designware controller IP.
>
> Signed-off-by: Lars Povlsen <lars.povlsen@...rochip.com>
> ---
>  .../mmc/microchip,dw-sparx5-sdhci.yaml        | 65 +++++++++++++++++++
>  1 file changed, 65 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mmc/microchip,dw-sparx5-sdhci.yaml
>
> diff --git a/Documentation/devicetree/bindings/mmc/microchip,dw-sparx5-sdhci.yaml b/Documentation/devicetree/bindings/mmc/microchip,dw-sparx5-sdhci.yaml
> new file mode 100644
> index 0000000000000..55883290543b9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/microchip,dw-sparx5-sdhci.yaml
> @@ -0,0 +1,65 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mmc/microchip,dw-sparx5-sdhci.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Microchip Sparx5 Mobile Storage Host Controller Binding
> +
> +allOf:
> +  - $ref: "mmc-controller.yaml"
> +
> +maintainers:
> +  - Lars Povlsen <lars.povlsen@...rochip.com>
> +
> +# Everything else is described in the common file
> +properties:
> +  compatible:
> +    const: microchip,dw-sparx5-sdhci
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +    description:
> +      Handle to "core" clock for the sdhci controller.
> +
> +  clock-names:
> +    items:
> +      - const: core
> +
> +  microchip,clock-delay:
> +    description: Delay clock to card to meet setup time requirements.
> +      Each step increase by 1.25ns.
> +    $ref: "/schemas/types.yaml#/definitions/uint32"
> +    minimum: 1
> +    maximum: 15
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +  - clock-names
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/clock/microchip,sparx5.h>
> +    sdhci0: mmc@...800000 {

Nitpick:

I think we should use solely "mmc[n]" here. So:

mmc0@...800000 {

Please update patch3/3 accordingly as well.

> +        compatible = "microchip,dw-sparx5-sdhci";
> +        reg = <0x00800000 0x1000>;
> +        pinctrl-0 = <&emmc_pins>;
> +        pinctrl-names = "default";
> +        clocks = <&clks CLK_ID_AUX1>;
> +        clock-names = "core";
> +        assigned-clocks = <&clks CLK_ID_AUX1>;
> +        assigned-clock-rates = <800000000>;
> +        interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
> +        bus-width = <8>;
> +        microchip,clock-delay = <10>;
> +    };

Kind regards
Uffe

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