Re: [PATCH v3 3/5] devicetree: create a separate binding description for sata_highbank

[Kumar Gala]

On Aug 7, 2013, at 10:52 AM, Mark Langsdorf wrote:

> The Calxeda sata_highbank driver has been adding its descriptions to the
> ahci driver. Separate them properly.
> 
> Signed-off-by: Mark Langsdorf <mark.langsdorf@xxxxxxxxxxx>
> Acked-by: Rob Herring <rob.herring@xxxxxxxxxxx>
> ---
> Changes from v2
> 	Fixed some indenting.
> Changes from v1
> 	None.
> 
> .../devicetree/bindings/ata/ahci-platform.txt      | 18 +++---------
> .../devicetree/bindings/ata/sata_highbank.txt      | 32 ++++++++++++++++++++++
> 2 files changed, 36 insertions(+), 14 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/ata/sata_highbank.txt
> 
> diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt
> index 3ec0c5c..89de156 100644
> --- a/Documentation/devicetree/bindings/ata/ahci-platform.txt
> +++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt
> @@ -4,27 +4,17 @@ SATA nodes are defined to describe on-chip Serial ATA controllers.
> Each SATA controller should have its own node.
> 
> Required properties:
> -- compatible        : compatible list, contains "calxeda,hb-ahci" or "snps,spear-ahci"
> +- compatible        : compatible list, contains "snps,spear-ahci"
> - interrupts        : <interrupt mapping for SATA IRQ>
> - reg               : <registers mapping>
> 
> Optional properties:
> -- calxeda,port-phys: phandle-combophy and lane assignment, which maps each
> -			SATA port to a combophy and a lane within that
> -			combophy
> -- calxeda,sgpio-gpio: phandle-gpio bank, bit offset, and default on or off,
> -			which indicates that the driver supports SGPIO
> -			indicator lights using the indicated GPIOs
> -- calxeda,led-order : a u32 array that map port numbers to offsets within the
> -			SGPIO bitstream.
> - dma-coherent      : Present if dma operations are coherent
> 
> Example:
>         sata@ffe08000 {
> -		compatible = "calxeda,hb-ahci";
> -                reg = <0xffe08000 0x1000>;
> -                interrupts = <115>;
> -		calxeda,port-phys = <&combophy5 0 &combophy0 0 &combophy0 1
> -					&combophy0 2 &combophy0 3>;
> +		compatible = "snps,spear-ahci";
> +		reg = <0xffe08000 0x1000>;
> +		interrupts = <115>;
> 
>         };
> diff --git a/Documentation/devicetree/bindings/ata/sata_highbank.txt b/Documentation/devicetree/bindings/ata/sata_highbank.txt
> new file mode 100644
> index 0000000..1ac6d3d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ata/sata_highbank.txt
> @@ -0,0 +1,32 @@
> +* Calxeda AHCI SATA Controller
> +
> +SATA nodes are defined to describe on-chip Serial ATA controllers.
> +The Calxeda SATA controller mostly conforms to the AHCI interface
> +with some special extensions to add functionality.
> +Each SATA controller should have its own node.
> +
> +Required properties:
> +- compatible        : compatible list, contains "calxeda,hb-ahci"
> +- interrupts        : <interrupt mapping for SATA IRQ>
> +- reg               : <registers mapping>
> +
> +Optional properties:
> +- dma-coherent      : Present if dma operations are coherent
> +- calxeda,port-phys: phandle-combophy and lane assignment, which maps each
> +			SATA port to a combophy and a lane within that
> +			combophy
> +- calxeda,sgpio-gpio: phandle-gpio bank, bit offset, and default on or off,
> +			which indicates that the driver supports SGPIO
> +			indicator lights using the indicated GPIOs
> +- calxeda,led-order : a u32 array that map port numbers to offsets within the
> +			SGPIO bitstream.

nit: whitespace after :

> +
> +Example:
> +        sata@ffe08000 {
> +		compatible = "calxeda,hb-ahci";
> +		reg = <0xffe08000 0x1000>;
> +		interrupts = <115>;
> +		calxeda,port-phys = <&combophy5 0 &combophy0 0 &combophy0 1
> +					&combophy0 2 &combophy0 3>;
> +

Its probably good to show all optional props (dma-coherent, calxeda,sgpio-gpios, & calxeda,led-order) in the example.

> +        };
> -- 
> 1.8.1.2
> 
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