Hi,
On Thursday 05 December 2013 03:13 PM, Andrew Lunn wrote:
> On Thu, Dec 05, 2013 at 11:33:46AM +0530, Kishon Vijay Abraham I wrote:
>> Hi,
>>
>> On Wednesday 04 December 2013 10:46 PM, Andrew Lunn wrote:
>>> Describe the binding for the Marvell MVEBU SATA phy. This driver
>>> can be used at least with Kirkwood, Dove and maybe others.
>>> Additionally, update the SATA binding with the properties to link
>>> to the phy nodes.
>>>
>>> Signed-off-by: Andrew Lunn <andrew@xxxxxxx>
>>> ---
>>> Documentation/devicetree/bindings/ata/marvell.txt | 6 ++++++
>>> .../devicetree/bindings/phy/phy-mvebu-sata.txt | 22 ++++++++++++++++++++++
>>> 2 files changed, 28 insertions(+)
>>> create mode 100644 Documentation/devicetree/bindings/phy/phy-mvebu-sata.txt
>>>
>>> diff --git a/Documentation/devicetree/bindings/ata/marvell.txt b/Documentation/devicetree/bindings/ata/marvell.txt
>>> index b5cdd20cde9c..e072fa105b49 100644
>>> --- a/Documentation/devicetree/bindings/ata/marvell.txt
>>> +++ b/Documentation/devicetree/bindings/ata/marvell.txt
>>> @@ -6,11 +6,17 @@ Required Properties:
>>> - interrupts : Interrupt controller is using
>>> - nr-ports : Number of SATA ports in use.
>>>
>>> +Optional Properties:
>>> +- phys : List of phandles to sata phys
>>> +- phy-names : Should be "0", "1", etc, one number per phandle
>>
>> over aligned..
>
> Could you explain please? Here is what it looks like without the patch
> formatting, which could be messing up the display of tabs, due to the
> + at the beginning:
ah.. yeah. Sorry for the noise.
Thanks
Kishon
>
> Required Properties:
> - compatibility : "marvell,orion-sata"
> - reg : Address range of controller
> - interrupts : Interrupt controller is using
> - nr-ports : Number of SATA ports in use.
>
> Optional Properties:
> - phys : List of phandles to sata phys
> - phy-names : Should be "0", "1", etc, one number per phandle
>
>
>
>>> +
>>> Example:
>>>
>>> sata@80000 {
>>> compatible = "marvell,orion-sata";
>>> reg = <0x80000 0x5000>;
>>> interrupts = <21>;
>>> + phys = <&sata_phy0>, <&sata_phy1>;
>>> + phy-names = "0", "1";
>>
>> more descriptive phy-names? sata-phy0?
>>> nr-ports = <2>;
>
> I could do, but i was following how the clocks work. Unfortunately,
> the binding documentation is out of date and does not contain
> clocks. A real example is:
>
> sata@80000 {
> compatible = "marvell,orion-sata";
> reg = <0x80000 0x5000>;
> interrupts = <21>;
> clocks = <&gate_clk 14>, <&gate_clk 15>;
> clock-names = "0", "1";
> phys = <&sata_phy0>, <&sata_phy1>;
> phy-names = "0", "1";
> status = "disabled";
> };
>
> So clocks and the phy are described nearly identically. I can however
> handle phys differently if you wish.
>
> I will also submit a separate patch to the binding documentation to
> add the clocks.
>
>
>>> }
>>> diff --git a/Documentation/devicetree/bindings/phy/phy-mvebu-sata.txt b/Documentation/devicetree/bindings/phy/phy-mvebu-sata.txt
>>> new file mode 100644
>>> index 000000000000..1cf9cef50b4b
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/phy/phy-mvebu-sata.txt
>>
>> Just name this mvebu-phy.txt so that we can add bindings of other mvebu PHYs
>> here when it's added.
>
> O.K. I also have a pcie phy driver, but it does not work
> yet. devm_phy_get() is too restrictive for a complex device like a
> PCIe controller.
>
>>> + sata-phy@1 {
>>
>> The value after '@' must match the first address specified in the reg property
>> of the node according to the ePAPR spec.
>
> O.K, will fix.
>
>>> + compatible = "marvell,mvebu-sata-phy";
>>> + reg = <0x84000 0x0334>;
>>> + clocks = <&gate_clk 15>;
>>> + clock-names = "sata";
>>> + #phy-cells = <1>;
>>
>> Is it on purpose that your are having phy-cells value to 1?
>
> Yes. Each instance only controls one phy.
>
> Thanks
> Andrew
>
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