From: Rob Herring <robh@kernel.org>
To: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Cc: Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
yuji2.ishikawa@toshiba.co.jp, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] iommu: bindings: Add binding documentation for Toshiba Visconti5 IOMMU device
Date: Thu, 2 Jun 2022 08:43:54 -0500 [thread overview]
Message-ID: <20220602134354.GA2170842-robh@kernel.org> (raw)
In-Reply-To: <20220525013147.2215355-3-nobuhiro1.iwamatsu@toshiba.co.jp>
On Wed, May 25, 2022 at 10:31:46AM +0900, Nobuhiro Iwamatsu wrote:
> Add documentation for the binding of Toshiba Visconti5 SoC's IOMMU.
>
> Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
> ---
> .../bindings/iommu/toshiba,visconti-atu.yaml | 62 +++++++++++++++++++
> 1 file changed, 62 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iommu/toshiba,visconti-atu.yaml
>
> diff --git a/Documentation/devicetree/bindings/iommu/toshiba,visconti-atu.yaml b/Documentation/devicetree/bindings/iommu/toshiba,visconti-atu.yaml
> new file mode 100644
> index 000000000000..af8d6688fa70
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iommu/toshiba,visconti-atu.yaml
> @@ -0,0 +1,62 @@
> +# SPDX-License-Identifier: GPL-2.0-only
Dual license: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iommu/toshiba,visconti-atu.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Toshiba ARM SoC Visconti5 IOMMU (ATU)
> +
> +maintainers:
> + - Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
> +
> +description: |+
> + IOMMU (ATU) driver can bse used for Visconti5's multimedia IPs, such as
Bindings are for hardware, not drivers.
> + DCNN (Deep Convolutional Neural Network), VIIF(Video Input), VOIF(Video
> + output), and others.
> +
> +properties:
> + compatible:
> + const: toshiba,visconti-atu
> +
> + reg:
> + maxItems: 1
> +
> + "#iommu-cells":
> + const: 0
> +
> + toshiba,max-entry:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: The size of entry for address
> + enum:
> + - 16
> + - 32
> +
> + toshiba,reserved-entry:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: The reserve number of entry address.
> + default: 0
> + minimum: 0
> + maximum: 32
These 2 need a better description of what they are for.
> +
> +required:
> + - compatible
> + - reg
> + - "#iommu-cells"
> + - toshiba,max-entry
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + atu_affine0: iommu@1400f000 {
Drop unused labels.
> + compatible = "toshiba,visconti-atu";
> + reg = <0 0x1400F000 0 0x1000>;
> + toshiba,max-entry = <16>;
> + toshiba,reserved-entry = <1>;
> + #iommu-cells = <0>;
> + };
> + };
> --
> 2.36.0
>
>
>
next prev parent reply other threads:[~2022-06-02 13:44 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-25 1:31 [PATCH 0/3] Add Visconti5 IOMMU driver Nobuhiro Iwamatsu
2022-05-25 1:31 ` [PATCH 1/3] iommu: " Nobuhiro Iwamatsu
2022-05-25 4:45 ` kernel test robot
2022-05-25 6:09 ` kernel test robot
2022-05-25 6:26 ` Baolu Lu
2022-05-25 18:26 ` Jason Gunthorpe
2022-05-26 0:43 ` Tian, Kevin
2022-05-26 1:40 ` Jason Gunthorpe
2022-06-20 5:49 ` nobuhiro1.iwamatsu
2022-06-24 13:39 ` Jason Gunthorpe
2022-06-20 2:15 ` nobuhiro1.iwamatsu
2022-05-25 9:36 ` kernel test robot
2022-05-25 1:31 ` [PATCH 2/3] iommu: bindings: Add binding documentation for Toshiba Visconti5 IOMMU device Nobuhiro Iwamatsu
2022-06-02 13:43 ` Rob Herring [this message]
2022-05-25 1:31 ` [PATCH 3/3] MAINTAINERS: Add entries for Toshiba Visconti5 IOMMU Nobuhiro Iwamatsu
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