linux-kernel - Re: [PATCHv3 0/5] ARM:sunxi:ps2 Added support for A10/A20 ps2 controller.

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Message-ID: <CAGb2v659jEj7cxPCu1UNPb-p6iaH6Sjcp4LCgsBOyBh-odSUhw@mail.gmail.com>
Date:	Mon, 15 Dec 2014 23:41:59 +0800
From:	Chen-Yu Tsai <wens@...e.org>
To:	Hans de Goede <hdegoede@...hat.com>
Cc:	Vishnu Patekar <vishnupatekar0510@...il.com>,
	"mark.rutland@....com" <mark.rutland@....com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"jdelvare@...e.de" <jdelvare@...e.de>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"pawel.moll@....com" <pawel.moll@....com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	"benh@...nel.crashing.org" <benh@...nel.crashing.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ralf@...ux-mips.org" <ralf@...ux-mips.org>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"msalter@...hat.com" <msalter@...hat.com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Kumar Gala <galak@...eaurora.org>,
	"maxime.ripard@...e-electrons.com" <maxime.ripard@...e-electrons.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCHv3 0/5] ARM:sunxi:ps2 Added support for A10/A20 ps2 controller.

Hi,

On Mon, Dec 15, 2014 at 11:13 PM, Hans de Goede <hdegoede@...hat.com> wrote:
> Hi,
>
>
> On 15-12-14 15:13, Vishnu Patekar wrote:
>>
>> Hi,
>>
>> On Sun, Dec 14, 2014 at 2:31 PM, Hans de Goede <hdegoede@...hat.com>
>> wrote:
>>>
>>> Hi,
>>>
>>> On 13-12-14 21:01, Vishnu Patekar wrote:
>>>>
>>>>
>>>> Hello Hans,
>>>> Please find my comments inlined.
>>>>
>>>> On 12/13/14, Hans de Goede <hdegoede@...hat.com> wrote:
>>>>>
>>>>>
>>>>> Hi VishnuPatekar,
>>>>>
>>>>> The patch mangling for this set seems to have gone a bit wrong I'm
>>>>> afraid
>>>>
>>>>
>>>>
>>>> No, this time I've corrected it. Infact, last version of patch did not
>>>> used the status bit error macros.
>>>>
>>>>> a lot of the patches have my fixup commit messages (which should have
>>>>> disappeared when squashing in the patches), please replace those by
>>>>> proper
>>>>> commit messages describing what the patch actually does.
>>>>
>>>>
>>>> Yes, [PATCHv3 3/5] uses fixup. I'll correct it.
>>>>>
>>>>>
>>>>>
>>>>> Also the adding of the commented nodes for the lime2 seems to be gone
>>>>> entirely
>>>>> from the set, instead now only a comment about the conflict with the
>>>>> hdmi
>>>>> pins is added, but it is above the i2c node instead of above a ps2
>>>>> node.
>>>>>
>>>> Maxime's suggested that we should not add commented nodes specially
>>>> when its trivial to apply. And just note saying ps20 pins conflict
>>>> with HDMI.
>>>
>>>
>>>
>>> Ah, I see.
>>>
>>>> Should I remove the this comment as well?
>>>> Or
>>>> Put this note in start of DTS file?
>>>
>>>
>>>
>>> The comment should be added to where the pinctrl bits are, not to the
>>> lime2
>>> file, ps0 will conflict with hdmi on all boards.
>>
>>
>> Well, In that case,PS2_0 pins conflicts with HDMI, PS2_1 pins
>> conflicts with LCD. Every pin has multiplexing.
>
>
> Almost every A10 board has a hdmi connector, and only the hdmi ddc pins
> are multiplexed, so this is sort of special, but yes if we do not have
> the commented nodes in the dts file, then this comment can be dropped too
> I guess.

All the HDMI pins have dedicated pins. In addition, the DDC pins are
multiplexed. On the Lime, the dedicated pins (ball # R23, R22) are
used. I just checked the schematics. There should be no conflict.

ChenYu
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