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From: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Dmitry Torokhov
	<dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Maxime Ripard
	<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
	Tong Zhang <lovewilliam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	LM Sensors <lm-sensors-GZX6beZjE8VD60Wz+7aTrA@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: [PATCH 1/2] touchscreen: sun4i-ts: A10 (sun4i) has double the temperature precision
Date: Tue, 17 Jun 2014 19:15:39 +0200	[thread overview]
Message-ID: <53A077BB.2090203@redhat.com> (raw)
In-Reply-To: <20140616213048.GA422-WlK9ik9hQGAhIp7JRqBPierSzoNAToWh@public.gmane.org>

Hi,

On 06/16/2014 11:30 PM, Dmitry Torokhov wrote:
> Hi Hans,
>
> On Mon, Jun 16, 2014 at 08:24:28PM +0200, Hans de Goede wrote:
>> Testing has revealed that the temperature in the rtp controller of the A10
>> (sun4i) SoC has a resolution of 50 milli degrees / step, where as the
>> A13 (sun5i) and later models have 100 milli degrees / step.
>>
>> Add a new sun5i-a13-ts compatible to differentiate the newer models and
>> set the resolution based on the compatible string.
>>
>> This fixes the temperature reported on the A10 being twice as high as expected.
>
> Should we maybe add explicit temperature steps property so that we won;t
> need to patch again if they decided to change resolution again?

Self NAK, further testing has revealed that it is likely not the resolution which is
different on the A10, but that we need to apply a different offset.

Regards,

Hans

  parent reply	other threads:[~2014-06-17 17:15 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-16 18:24 [PATCH 0/2] touchscreen: sun4i-ts: fix reported temperature on A10 Hans de Goede
     [not found] ` <1402943069-19420-1-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-06-16 18:24   ` [PATCH 1/2] touchscreen: sun4i-ts: A10 (sun4i) has double the temperature precision Hans de Goede
     [not found]     ` <1402943069-19420-2-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-06-16 21:30       ` Dmitry Torokhov
     [not found]         ` <20140616213048.GA422-WlK9ik9hQGAhIp7JRqBPierSzoNAToWh@public.gmane.org>
2014-06-17  6:31           ` Hans de Goede
2014-06-17 17:15           ` Hans de Goede [this message]
2014-06-16 18:24   ` [PATCH 2/2] ARM: dts: sunxi: Adjust touchscreen compatible for sun5i and later Hans de Goede

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