[PATCHv4 3/5] pinctrl: mvebu: pinctrl driver for 98DX3236 SoC

Sebastian Hesselbarth sebastian.hesselbarth at gmail.com
Thu Jan 19 15:19:13 PST 2017

On 19.01.2017 22:12, Chris Packham wrote:
> On 14/01/17 20:50, Chris Packham wrote:
>> On 13/01/17 22:54, Sebastian Hesselbarth wrote:
>>> On 13.01.2017 10:12, Chris Packham wrote:
>>>> From: Kalyan Kinthada <kalyan.kinthada at alliedtelesis.co.nz>
>>>> This pinctrl driver supports the 98DX3236, 98DX3336 and 98DX4251 SoCs
>>>> from Marvell.
>>>> Signed-off-by: Kalyan Kinthada <kalyan.kinthada at alliedtelesis.co.nz>
>>>> Signed-off-by: Chris Packham <chris.packham at alliedtelesis.co.nz>
>>>> Acked-by: Rob Herring <robh at kernel.org>
>>>> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth at gmail.com>
>>>> ---
>>>> Notes:
>>>>     Changes in v2:
>>>>     - include sdio support for the 98DX4251
>>>>     Changes in v3:
>>>>     - None
>>>>     Changes in v4:
>>>>     - Correct some discrepencies between binding and driver.
>>> Well, unfortunately I still see differences between the "gpio" in
>>> the binding and "gpo" in the driver.
>>> Please go back to that list I sent you yesterday and fix them all.
>> I think you may have missed my initial reply [1]. Or I have missed your
>> response to it. Long story short "gpo" is intentional because some of
>> those pins can't be used as inputs. But if you still want me to change
>> it I will.
>> [1] - https://lkml.org/lkml/2017/1/12/117
> Did you get a chance to consider this. Do you still want me to change 
> gpo -> gpio given the information above?


sorry if I wasn't clear enough. I don't want you to change every gpo
into gpio. All I was referring to is the _difference_ between driver
implementation and device tree binding - and soley resolve that.

So, for the gpo's I see that the binding doc still says "gpio" for the
available functions where the driver expects "gpo".

e.g. the binding has this:

mpp6          6        gpio, sd0(clk), dev(a2)

if you change it to

mpp6          6        gpo, sd0(clk), dev(a2)

both binding and driver are the same, right?

I do understand that the hardware is gp-output only and you correctly
reflected that in the pinctrl driver - but the binding doc does not
reflect that for those mpps in the list.

Did I make it clearer now or am I still missing the point?


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