linux-kernel - Re: [PATCH 1/2] dt-bindings: ata: add DT bindings for ahci-dm816 SATA controller

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Message-ID: <2d0ede95-86d6-4d52-6cf5-91de35a29145@cogentembedded.com>
Date:   Mon, 13 Mar 2017 19:53:00 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Tejun Heo <tj@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Michael Turquette <mturquette@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Patrick Titiano <ptitiano@...libre.com>
Cc:     linux-ide@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: ata: add DT bindings for ahci-dm816 SATA
 controller

Hello!

On 03/13/2017 07:36 PM, Bartosz Golaszewski wrote:

> Add DT bindings for the onboard SATA controller present on the DM816x
> SoCs.
>
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
> ---
>  Documentation/devicetree/bindings/ata/ahci-dm816.txt | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/ata/ahci-dm816.txt
>
> diff --git a/Documentation/devicetree/bindings/ata/ahci-dm816.txt b/Documentation/devicetree/bindings/ata/ahci-dm816.txt
> new file mode 100644
> index 0000000..b87ed5a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ata/ahci-dm816.txt
> @@ -0,0 +1,20 @@
> +Device tree binding for the TI DM816 AHCI SATA Controller
> +---------------------------------------------------------
> +
> +Required properties:
> +  - compatible: must be "ti,dm816-ahci"
> +  - reg: physical base address and size of the register region used by
> +         the controller (as defined by the AHCI 1.1 standard)
> +  - interrupts: interrupt specifier (refer to the interrupt binding)
> +  - clocks: clock specifiers (refer to the clock binding); two clocks

    There should be a phandle preceding the clock specifier, all new such 
props are different to the old "interrupts" (which had phandle in a separate 
"interrupt-parent" prop).

> +            must be specified: the functional clock and an external
> +            reference clock
> +
> +Example:
> +
> +	sata: sata@...40000 {
> +		compatible = "ti,dm816-ahci";
> +		reg = <0x4a140000 0xffff>;

   I think you meant 0x10000 ISO 0xffff -- this is a size, not limit.

> +		interrupts = <16>;
> +		clocks = <&sysclk5_ck>, <&sata_refclk>;
> +	};
>

MBR, Sergei