linux-kernel - Re: [PATCH 1/2] dt-bindings: ufs: ti,j721e-ufs.yaml: Add binding for TI UFS wrapper

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Date:   Tue, 1 Oct 2019 07:08:26 -0500
From:   Rob Herring <robh@...nel.org>
To:     Vignesh Raghavendra <vigneshr@...com>
Cc:     Mark Rutland <mark.rutland@....com>, jejb@...ux.ibm.com,
        Martin K Petersen <martin.petersen@...cle.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        Pedro Sousa <pedrom.sousa@...opsys.com>,
        Janek Kotas <jank@...ence.com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
        nsekhar@...com
Subject: Re: [PATCH 1/2] dt-bindings: ufs: ti,j721e-ufs.yaml: Add binding for
 TI UFS wrapper

On Wed, Sep 18, 2019 at 07:09:20PM +0530, Vignesh Raghavendra wrote:
> Add binding documentation of TI wrapper for Cadence UFS Controller.
> 
> Signed-off-by: Vignesh Raghavendra <vigneshr@...com>
> ---
>  .../devicetree/bindings/ufs/ti,j721e-ufs.yaml | 45 +++++++++++++++++++
>  1 file changed, 45 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/ufs/ti,j721e-ufs.yaml
> 
> diff --git a/Documentation/devicetree/bindings/ufs/ti,j721e-ufs.yaml b/Documentation/devicetree/bindings/ufs/ti,j721e-ufs.yaml
> new file mode 100644
> index 000000000000..dabd7c795fbe
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ufs/ti,j721e-ufs.yaml
> @@ -0,0 +1,45 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/ufs/ti,j721e-ufs.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: TI J721e UFS Host Controller Glue Driver
> +
> +maintainers:
> +  - Vignesh Raghavendra <vigneshr@...com>
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: ti,j721e-ufs
> +
> +  reg:
> +    maxItems: 1
> +    description: address of TI UFS glue registers
> +
> +  clocks:
> +    maxItems: 1
> +    description: phandle to the M-PHY clock
> +
> +  power-domains:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - power-domains
> +
> +examples:
> +  - |
> +    ufs_wrapper: ufs-wrapper@...0000 {
> +       compatible = "ti,j721e-ufs";
> +       reg = <0x0 0x4e80000 0x0 0x100>;
> +       power-domains = <&k3_pds 277>;
> +       clocks = <&k3_clks 277 1>;
> +       assigned-clocks = <&k3_clks 277 1>;
> +       assigned-clock-parents = <&k3_clks 277 4>;
> +       #address-cells = <2>;
> +       #size-cells = <2>;

Based on the driver you expect to have a child node here with the UFS 
controller? You need to show that and have a schema for it.

> +    };
> -- 
> 2.23.0
>