linux-kernel - Re: [PATCH 3/5] dt-bindings: ufs: ti: Fix address properties handling

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Date:   Wed, 13 May 2020 13:19:00 +0530
From:   Vignesh Raghavendra <vigneshr@...com>
To:     Rob Herring <robh@...nel.org>, <devicetree@...r.kernel.org>
CC:     <linux-clk@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        <linux-spi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH 3/5] dt-bindings: ufs: ti: Fix address properties handling



On 13/05/20 2:15 am, Rob Herring wrote:
> The ti,j721e-ufs schema and example have a couple of problems related to
> address properties. First, the default #size-cells and #address-cells
> are 1 for examples, so they need to be overriden with a bus node.
> Second, address translation for the child ufs node is broken because
> 'ranges', '#address-cells', and '#size-cells' are missing from the
> schema.
> 
> Cc: Vignesh Raghavendra <vigneshr@...com>
> Signed-off-by: Rob Herring <robh@...nel.org>
> ---

Acked-by: Vignesh Raghavendra <vigneshr@...com>

Regards
Vignesh

> Please ack, dependency for patch 5.
> 
>  .../devicetree/bindings/ufs/ti,j721e-ufs.yaml | 57 ++++++++++++-------
>  1 file changed, 36 insertions(+), 21 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/ufs/ti,j721e-ufs.yaml b/Documentation/devicetree/bindings/ufs/ti,j721e-ufs.yaml
> index c8a2a92074df..b503b1a918a5 100644
> --- a/Documentation/devicetree/bindings/ufs/ti,j721e-ufs.yaml
> +++ b/Documentation/devicetree/bindings/ufs/ti,j721e-ufs.yaml
> @@ -25,6 +25,14 @@ properties:
>    power-domains:
>      maxItems: 1
>  
> +  "#address-cells":
> +    const: 2
> +
> +  "#size-cells":
> +    const: 2
> +
> +  ranges: true
> +
>  required:
>    - compatible
>    - reg
> @@ -44,25 +52,32 @@ examples:
>      #include <dt-bindings/interrupt-controller/irq.h>
>      #include <dt-bindings/interrupt-controller/arm-gic.h>
>  
> -    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>;
> -
> -       ufs@...4000 {
> -          compatible = "cdns,ufshc-m31-16nm", "jedec,ufs-2.0";
> -          reg = <0x0 0x4e84000 0x0 0x10000>;
> -          interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
> -          freq-table-hz = <19200000 19200000>;
> -          power-domains = <&k3_pds 277>;
> -          clocks = <&k3_clks 277 1>;
> -          assigned-clocks = <&k3_clks 277 1>;
> -          assigned-clock-parents = <&k3_clks 277 4>;
> -          clock-names = "core_clk";
> -       };
> +    bus {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        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>;
> +
> +            ranges = <0x0 0x0 0x0 0x4e80000 0x0 0x14000>;
> +            #address-cells = <2>;
> +            #size-cells = <2>;
> +
> +            ufs@...0 {
> +                compatible = "cdns,ufshc-m31-16nm", "jedec,ufs-2.0";
> +                reg = <0x0 0x4000 0x0 0x10000>;
> +                interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
> +                freq-table-hz = <19200000 19200000>;
> +                power-domains = <&k3_pds 277>;
> +                clocks = <&k3_clks 277 1>;
> +                assigned-clocks = <&k3_clks 277 1>;
> +                assigned-clock-parents = <&k3_clks 277 4>;
> +                clock-names = "core_clk";
> +            };
> +        };
>      };
>