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From: hdegoede@redhat.com (Hans de Goede)
To: linux-arm-kernel@lists.infradead.org
Subject: [linux-sunxi] Re: [PATCH 1/3] Revert "ARM: dts: sun8i: Add new sun8i-a33-q8-tzx-723q4.dts file"
Date: Fri, 25 Sep 2015 10:00:23 +0200	[thread overview]
Message-ID: <5604FF17.7000005@redhat.com> (raw)
In-Reply-To: <20150925064258.GA4684@lukather>

Hi,

On 25-09-15 08:42, Maxime Ripard wrote:
> On Thu, Sep 24, 2015 at 05:23:52PM +0200, Hans de Goede wrote:
>> The tzx-723q[a]4 board variant of A33 based Q8 formfactor tablets was
>> given its own dts file because the mmc would not work with a drive
>> strength of 30mA, Android seemed to be using a lower drive-strength
>> and doing the same with the upstream kernel seemed to fix this issue.
>>
>> While working on a similar fix for u-boot I noticed that Android did
>> not use a lower drive strength for mmc0, but for mmc1, so mmc0 should
>> work fine with a drive strength of 30mA.
>>
>> Further investigation has shown that Allwinner is using slightly
>> tweaked clock sample phase settings in newer Android kernels, and
>> that updating the mainstream sunxi mmc driver to these settings fixes
>> this.
>>
>> With this fixed we no longer need a dts file specifically for these
>> pcb varants -> drop this dts file.
>
> I dropped the patch.
>
>> This reverts commit fb61c559a810f1487892b83d2d0606af1d020318.
>
> Checkpatch prints an error about this one. Make sure you have the
> right commit format.

<sigh> going off-topic here (very much so), but that line is actually
auto-generated by "git revert" it would be nice if the git and checkpatch
people got get together and agree on a common format here.

Regards,

Hans

WARNING: multiple messages have this Message-ID (diff)
From: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Maxime Ripard
	<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Cc: Ian Campbell <ijc-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
	Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>,
	Vishnu Patekar
	<vishnupatekar0510-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Jelle van der Waa <jelle-oJJ1AqDjjO4@public.gmane.org>,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	devicetree <devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
Subject: Re: Re: [PATCH 1/3] Revert "ARM: dts: sun8i: Add new sun8i-a33-q8-tzx-723q4.dts file"
Date: Fri, 25 Sep 2015 10:00:23 +0200	[thread overview]
Message-ID: <5604FF17.7000005@redhat.com> (raw)
In-Reply-To: <20150925064258.GA4684@lukather>

Hi,

On 25-09-15 08:42, Maxime Ripard wrote:
> On Thu, Sep 24, 2015 at 05:23:52PM +0200, Hans de Goede wrote:
>> The tzx-723q[a]4 board variant of A33 based Q8 formfactor tablets was
>> given its own dts file because the mmc would not work with a drive
>> strength of 30mA, Android seemed to be using a lower drive-strength
>> and doing the same with the upstream kernel seemed to fix this issue.
>>
>> While working on a similar fix for u-boot I noticed that Android did
>> not use a lower drive strength for mmc0, but for mmc1, so mmc0 should
>> work fine with a drive strength of 30mA.
>>
>> Further investigation has shown that Allwinner is using slightly
>> tweaked clock sample phase settings in newer Android kernels, and
>> that updating the mainstream sunxi mmc driver to these settings fixes
>> this.
>>
>> With this fixed we no longer need a dts file specifically for these
>> pcb varants -> drop this dts file.
>
> I dropped the patch.
>
>> This reverts commit fb61c559a810f1487892b83d2d0606af1d020318.
>
> Checkpatch prints an error about this one. Make sure you have the
> right commit format.

<sigh> going off-topic here (very much so), but that line is actually
auto-generated by "git revert" it would be nice if the git and checkpatch
people got get together and agree on a common format here.

Regards,

Hans

  reply	other threads:[~2015-09-25  8:00 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-24 15:23 [PATCH 1/3] Revert "ARM: dts: sun8i: Add new sun8i-a33-q8-tzx-723q4.dts file" Hans de Goede
2015-09-24 15:23 ` Hans de Goede
2015-09-24 15:23 ` [PATCH 2/3] ARM: dts: sun8i: Add sun8i-a33-q8-tablet.dts file Hans de Goede
2015-09-24 15:23   ` Hans de Goede
2015-09-28  8:34   ` Maxime Ripard
2015-09-28  8:34     ` Maxime Ripard
2015-09-24 15:23 ` [PATCH 3/3] ARM: dts: sun8i: Make ippo-q8h-v1.2.dts a symlink to q8-tablet.dts Hans de Goede
2015-09-24 15:23   ` Hans de Goede
2015-09-25  6:42 ` [PATCH 1/3] Revert "ARM: dts: sun8i: Add new sun8i-a33-q8-tzx-723q4.dts file" Maxime Ripard
2015-09-25  6:42   ` Maxime Ripard
2015-09-25  8:00   ` Hans de Goede [this message]
2015-09-25  8:00     ` Hans de Goede

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