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Message-ID: <CAL_Jsq+X3w=1-_SpXPTdO_UGg5er9vU-XETT-NbS96LSfNLUVQ@mail.gmail.com>
Date:   Mon, 19 Oct 2020 08:38:40 -0500
From:   Rob Herring <robh+dt@...nel.org>
To:     Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
        PCI <linux-pci@...r.kernel.org>, devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...com>
Subject: Re: [PATCH 2/6] Documetation: dt-bindings: add the
 samsung,exynos-pcie binding

On Mon, Oct 19, 2020 at 4:47 AM Marek Szyprowski
<m.szyprowski@...sung.com> wrote:
>
> From: Jaehoon Chung <jh80.chung@...sung.com>
>
> Add dt-bindings for the Samsung Exynos PCIe controller (Exynos5433
> variant).
>
> Signed-off-by: Jaehoon Chung <jh80.chung@...sung.com>
> [mszyprow: updated the binding to latest driver changes, rewrote it in yaml,
>            rewrote commit message]
> Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
> ---
>  .../bindings/pci/samsung,exynos-pcie.yaml     | 106 ++++++++++++++++++
>  1 file changed, 106 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml
>
> diff --git a/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml b/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml
> new file mode 100644
> index 000000000000..48fb569c238c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml
> @@ -0,0 +1,104 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pci/samsung,exynos-pcie.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Samsung SoC series PCIe Host Controller Device Tree Bindings
> +
> +maintainers:
> +  - Jaehoon Chung <jh80.chung@...sung.com>
> +
> +description: |+
> +  Exynos5433 SoC PCIe host controller is based on the Synopsys DesignWare
> +  PCIe IP and thus inherits all the common properties defined in
> +  designware-pcie.txt.
> +
> +allOf:
> +  - $ref: /schemas/pci/pci-bus.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - samsung,exynos5433-pcie
> +
> +  reg:
> +    items:
> +      - description: External Local Bus interface (ELBI) registers.
> +      - description: Data Bus Interface (DBI) registers.
> +      - description: PCIe configuration space region.
> +
> +  reg-names:
> +    items:
> +      - const: elbi
> +      - const: bdi

dbi

> +      - const: config
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: PCIe bridge clock
> +      - description: PCIe bus clock
> +
> +  clock-names:
> +    items:
> +      - const: pcie
> +      - const: pcie_bus
> +
> +  phys:
> +    maxItems: 1
> +
> +  phy-names:
> +    const: pcie-phy

Kind of a pointless name.

> +
> +  vdd10-supply:
> +    description:
> +      Phandle to a regulator that provides 1.0V power to the PCIe block.
> +
> +  vdd18-supply:
> +    description:
> +      Phandle to a regulator that provides 1.8V power to the PCIe block.
> +
> +required:
> +  - reg
> +  - reg-names
> +  - interrupts
> +  - interrupt-names
> +  - clocks
> +  - clock-names
> +  - phys
> +  - phy-names
> +  - vdd10-supply
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/clock/exynos5433.h>
> +
> +    pcie: pcie@...00000 {
> +        compatible = "samsung,exynos5433-pcie";
> +        reg = <0x156b0000 0x1000>, <0x15700000 0x1000>, <0x0c000000 0x1000>;
> +        reg-names = "elbi", "dbi", "config";
> +        #address-cells = <3>;
> +        #size-cells = <2>;
> +        #interrupt-cells = <1>;
> +        device_type = "pci";
> +        interrupts = <GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>;
> +        clocks = <&cmu_fsys CLK_PCIE>, <&cmu_fsys CLK_PCLK_PCIE_PHY>;
> +        clock-names = "pcie", "pcie_bus";
> +        phys = <&pcie_phy>;
> +        phy-names = "pcie-phy";
> +        pinctrl-names = "default";
> +        pinctrl-0 = <&pcie_bus &pcie_wlanen>;
> +        num-lanes = <1>;
> +        bus-range = <0x00 0xff>;
> +        ranges = <0x81000000 0 0         0x0c001000 0 0x00010000>,
> +                 <0x82000000 0 0x0c011000 0x0c011000 0 0x03feefff>;
> +        vdd10-supply = <&ldo6_reg>;
> +        vdd18-supply = <&ldo7_reg>;
> +        iterrupt-map-mask = <0 0 0 0>;

typo

> +        interrupt-map = <0 0 0 0 &gic GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>;
> +    };
> --
> 2.17.1
>

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