From: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
To: Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>
Cc: "linux-fbdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
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Ian Campbell
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Jean-Christophe Plagniol-Villard
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Tomi Valkeinen <tomi.valkeinen-l0cyMroinI0@public.gmane.org>,
Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
Arnd Bergmann
<arnd.bergmann-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Sylwester Nawrocki
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Subject: Re: [PATCH v3 1/2] video: ARM CLCD: Add DT support
Date: Tue, 17 Sep 2013 15:34:49 -0600 [thread overview]
Message-ID: <5238CAF9.6040400@wwwdotorg.org> (raw)
In-Reply-To: <1379436716.9205.25.camel@hornet>
On 09/17/2013 10:51 AM, Pawel Moll wrote:
> Uh, sorry, missed one...
>
> On Tue, 2013-09-17 at 17:36 +0100, Pawel Moll wrote:
>> On Mon, 2013-09-16 at 20:52 +0100, Stephen Warren wrote:
>>>> +- arm,pl11x,panel-data-pads: array of 24 cells, each of them describing
>>>> + a function of one of the CLD pads,
>>>> + starting from 0 up to 23; each pad can
>>>> + be described by one of the following values:
>>>> + - 0: reserved (not connected)
>>>> + - 0x100-0x107: color upper STN panel data 0 to 7
>>> ...
>>>
>>> I assume those are the raw values that go into the HW?
>
> No, they can be considered "labels", defining the way pads are used
> (wired). Then, basing on this information, the driver is configuring the
> cell, eg. selecting STN or TFT mode (thus switching the output between
> panel formatter and raw RGB data source).
Oh, why not just use the raw values from the HW registers for this?
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WARNING: multiple messages have this Message-ID (diff)
From: Stephen Warren <swarren@wwwdotorg.org>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 1/2] video: ARM CLCD: Add DT support
Date: Tue, 17 Sep 2013 21:34:49 +0000 [thread overview]
Message-ID: <5238CAF9.6040400@wwwdotorg.org> (raw)
In-Reply-To: <1379436716.9205.25.camel@hornet>
On 09/17/2013 10:51 AM, Pawel Moll wrote:
> Uh, sorry, missed one...
>
> On Tue, 2013-09-17 at 17:36 +0100, Pawel Moll wrote:
>> On Mon, 2013-09-16 at 20:52 +0100, Stephen Warren wrote:
>>>> +- arm,pl11x,panel-data-pads: array of 24 cells, each of them describing
>>>> + a function of one of the CLD pads,
>>>> + starting from 0 up to 23; each pad can
>>>> + be described by one of the following values:
>>>> + - 0: reserved (not connected)
>>>> + - 0x100-0x107: color upper STN panel data 0 to 7
>>> ...
>>>
>>> I assume those are the raw values that go into the HW?
>
> No, they can be considered "labels", defining the way pads are used
> (wired). Then, basing on this information, the driver is configuring the
> cell, eg. selecting STN or TFT mode (thus switching the output between
> panel formatter and raw RGB data source).
Oh, why not just use the raw values from the HW registers for this?
WARNING: multiple messages have this Message-ID (diff)
From: swarren@wwwdotorg.org (Stephen Warren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 1/2] video: ARM CLCD: Add DT support
Date: Tue, 17 Sep 2013 15:34:49 -0600 [thread overview]
Message-ID: <5238CAF9.6040400@wwwdotorg.org> (raw)
In-Reply-To: <1379436716.9205.25.camel@hornet>
On 09/17/2013 10:51 AM, Pawel Moll wrote:
> Uh, sorry, missed one...
>
> On Tue, 2013-09-17 at 17:36 +0100, Pawel Moll wrote:
>> On Mon, 2013-09-16 at 20:52 +0100, Stephen Warren wrote:
>>>> +- arm,pl11x,panel-data-pads: array of 24 cells, each of them describing
>>>> + a function of one of the CLD pads,
>>>> + starting from 0 up to 23; each pad can
>>>> + be described by one of the following values:
>>>> + - 0: reserved (not connected)
>>>> + - 0x100-0x107: color upper STN panel data 0 to 7
>>> ...
>>>
>>> I assume those are the raw values that go into the HW?
>
> No, they can be considered "labels", defining the way pads are used
> (wired). Then, basing on this information, the driver is configuring the
> cell, eg. selecting STN or TFT mode (thus switching the output between
> panel formatter and raw RGB data source).
Oh, why not just use the raw values from the HW registers for this?
next prev parent reply other threads:[~2013-09-17 21:34 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-16 17:18 [PATCH v3 1/2] video: ARM CLCD: Add DT support Pawel Moll
2013-09-16 17:18 ` Pawel Moll
2013-09-16 17:18 ` Pawel Moll
[not found] ` <1379351934-25415-1-git-send-email-pawel.moll-5wv7dgnIgG8@public.gmane.org>
2013-09-16 17:18 ` [PATCH v3 2/2] ARM: vexpress: Add CLCD Device Tree properties Pawel Moll
2013-09-16 17:18 ` Pawel Moll
2013-09-16 17:18 ` Pawel Moll
2013-09-16 19:52 ` [PATCH v3 1/2] video: ARM CLCD: Add DT support Stephen Warren
2013-09-16 19:52 ` Stephen Warren
2013-09-16 19:52 ` Stephen Warren
[not found] ` <52376180.1090001-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-09-17 16:36 ` Pawel Moll
2013-09-17 16:36 ` Pawel Moll
2013-09-17 16:36 ` Pawel Moll
2013-09-17 16:51 ` Pawel Moll
2013-09-17 16:51 ` Pawel Moll
2013-09-17 16:51 ` Pawel Moll
2013-09-17 21:34 ` Stephen Warren [this message]
2013-09-17 21:34 ` Stephen Warren
2013-09-17 21:34 ` Stephen Warren
2013-09-17 21:38 ` Stephen Warren
2013-09-17 21:38 ` Stephen Warren
2013-09-17 21:38 ` Stephen Warren
[not found] ` <5238CBE9.2060800-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-09-18 16:39 ` Pawel Moll
2013-09-18 16:39 ` Pawel Moll
2013-09-18 16:39 ` Pawel Moll
2013-09-23 16:03 ` Stephen Warren
2013-09-23 16:03 ` Stephen Warren
2013-09-23 16:03 ` Stephen Warren
[not found] ` <52406646.709-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-09-23 16:06 ` Russell King - ARM Linux
2013-09-23 16:06 ` Russell King - ARM Linux
2013-09-23 16:06 ` Russell King - ARM Linux
[not found] ` <20130923160640.GT12758-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2013-09-23 16:30 ` Stephen Warren
2013-09-23 16:30 ` Stephen Warren
2013-09-23 16:30 ` Stephen Warren
[not found] ` <52406C97.3010800-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-09-23 16:43 ` Russell King - ARM Linux
2013-09-23 16:43 ` Russell King - ARM Linux
2013-09-23 16:43 ` Russell King - ARM Linux
[not found] ` <20130923164302.GW12758-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2013-09-23 19:52 ` Stephen Warren
2013-09-23 19:52 ` Stephen Warren
2013-09-23 19:52 ` Stephen Warren
[not found] ` <52409C0C.1000406-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-09-23 20:29 ` Russell King - ARM Linux
2013-09-23 20:29 ` Russell King - ARM Linux
2013-09-23 20:29 ` Russell King - ARM Linux
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