From: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Maxime Ripard
<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Cc: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>,
Vishnu Patekar
<vishnupatekar0510-Re5JQEeQqe8AvxtiuMwx3w@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 v2 6/6] ARM: sun8i: dts: Add Ippo-q8h v1.2 with A33 and 1024x600 lcd support
Date: Tue, 02 Jun 2015 10:29:09 +0200 [thread overview]
Message-ID: <556D6955.8030708@redhat.com> (raw)
In-Reply-To: <20150602081459.GO23777@lukather>
Hi,
On 02-06-15 10:14, Maxime Ripard wrote:
> On Sat, May 30, 2015 at 04:55:06PM +0200, Hans de Goede wrote:
>> The Ippo-q8h is a tablet circuit board commonly found in cheap Android
>> tablets. The v1.2 version can be used with either an A23 or A33 SoC.
>>
>> This adds a dts file for the v1.2 board with an A33 SoC and a 1024x600
>> LCD screen (most of these tablets have a 800x480 screen).
>
> I think the difference between the resolution here is more of a case
> for the DT quirks interface:
> https://lkml.org/lkml/2015/2/18/258
I would expect the only difference between the 2 dts files to be the
node describing the lcd panel, so yes that makes somewhat sense.
> Do you know if there's some way to autodetect the two board versions
> (like a board id somewhere in an EEPROM)?
No, AFAIK there is no way to tell the difference. There is no eeprom no
the board, and we really cannot rely on the nand contents.
> If not, then maybe u-boot can simply add that board compatible to the
> list, and we'll base our logic on that when we'll need it.
That means extra logic in u-boot, and on the kernel side, for what
benefit exactly? Such logic would make sense if there was one u-boot
image which runtime adjusted itself, but that is not an option.
And we can avoid copy and paste on the dts side by putting all
the common stuff in a common file and including that, I believe
that that is better (KISS = better) since we've no way to runtime
do the right thing AFAICT.
Regards,
Hans
WARNING: multiple messages have this Message-ID (diff)
From: hdegoede@redhat.com (Hans de Goede)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 6/6] ARM: sun8i: dts: Add Ippo-q8h v1.2 with A33 and 1024x600 lcd support
Date: Tue, 02 Jun 2015 10:29:09 +0200 [thread overview]
Message-ID: <556D6955.8030708@redhat.com> (raw)
In-Reply-To: <20150602081459.GO23777@lukather>
Hi,
On 02-06-15 10:14, Maxime Ripard wrote:
> On Sat, May 30, 2015 at 04:55:06PM +0200, Hans de Goede wrote:
>> The Ippo-q8h is a tablet circuit board commonly found in cheap Android
>> tablets. The v1.2 version can be used with either an A23 or A33 SoC.
>>
>> This adds a dts file for the v1.2 board with an A33 SoC and a 1024x600
>> LCD screen (most of these tablets have a 800x480 screen).
>
> I think the difference between the resolution here is more of a case
> for the DT quirks interface:
> https://lkml.org/lkml/2015/2/18/258
I would expect the only difference between the 2 dts files to be the
node describing the lcd panel, so yes that makes somewhat sense.
> Do you know if there's some way to autodetect the two board versions
> (like a board id somewhere in an EEPROM)?
No, AFAIK there is no way to tell the difference. There is no eeprom no
the board, and we really cannot rely on the nand contents.
> If not, then maybe u-boot can simply add that board compatible to the
> list, and we'll base our logic on that when we'll need it.
That means extra logic in u-boot, and on the kernel side, for what
benefit exactly? Such logic would make sense if there was one u-boot
image which runtime adjusted itself, but that is not an option.
And we can avoid copy and paste on the dts side by putting all
the common stuff in a common file and including that, I believe
that that is better (KISS = better) since we've no way to runtime
do the right thing AFAICT.
Regards,
Hans
next prev parent reply other threads:[~2015-06-02 8:29 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-30 14:55 [PATCH v2 0/6] Introduce Allwinner A33 support Hans de Goede
2015-05-30 14:55 ` Hans de Goede
[not found] ` <1432997706-20172-1-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-05-30 14:55 ` [PATCH v2 1/6] ARM: sunxi: Add Machine support for A33 Hans de Goede
2015-05-30 14:55 ` Hans de Goede
[not found] ` <1432997706-20172-2-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-06-02 7:28 ` Maxime Ripard
2015-06-02 7:28 ` Maxime Ripard
2015-05-30 14:55 ` [PATCH v2 2/6] pinctrl: sunxi: Add allwinner A33 PIO controller support Hans de Goede
2015-05-30 14:55 ` Hans de Goede
2015-05-30 14:55 ` [PATCH v2 3/6] ARM: dts: sun8i: Add sun8i-a23-a33 dtsi Hans de Goede
2015-05-30 14:55 ` Hans de Goede
[not found] ` <1432997706-20172-4-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-06-02 7:51 ` Maxime Ripard
2015-06-02 7:51 ` Maxime Ripard
2015-06-02 8:08 ` Hans de Goede
2015-06-02 8:08 ` Hans de Goede
[not found] ` <556D6487.4010207-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-06-02 8:21 ` Maxime Ripard
2015-06-02 8:21 ` Maxime Ripard
2015-05-30 14:55 ` [PATCH v2 4/6] ARM: dts: sun8i: Add sun8i-a33 dtsi Hans de Goede
2015-05-30 14:55 ` Hans de Goede
[not found] ` <1432997706-20172-5-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-06-02 7:55 ` Maxime Ripard
2015-06-02 7:55 ` Maxime Ripard
2015-05-30 14:55 ` [PATCH v2 5/6] ARM: dts: sun8i: Add ET-Q8 A33 support Hans de Goede
2015-05-30 14:55 ` Hans de Goede
[not found] ` <1432997706-20172-6-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-06-02 7:56 ` Maxime Ripard
2015-06-02 7:56 ` Maxime Ripard
2015-05-30 14:55 ` [PATCH v2 6/6] ARM: sun8i: dts: Add Ippo-q8h v1.2 with A33 and 1024x600 lcd support Hans de Goede
2015-05-30 14:55 ` Hans de Goede
[not found] ` <1432997706-20172-7-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-06-02 8:14 ` Maxime Ripard
2015-06-02 8:14 ` Maxime Ripard
2015-06-02 8:29 ` Hans de Goede [this message]
2015-06-02 8:29 ` Hans de Goede
[not found] ` <556D6955.8030708-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-06-03 9:45 ` Maxime Ripard
2015-06-03 9:45 ` Maxime Ripard
2015-06-03 11:12 ` Hans de Goede
2015-06-03 11:12 ` Hans de Goede
[not found] ` <556EE104.3090803-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-06-13 13:50 ` Maxime Ripard
2015-06-13 13:50 ` Maxime Ripard
2015-06-13 14:18 ` Hans de Goede
2015-06-13 14:18 ` Hans de Goede
[not found] ` <557C3BD3.6030105-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-06-16 17:41 ` Maxime Ripard
2015-06-16 17:41 ` Maxime Ripard
2015-06-17 7:16 ` Hans de Goede
2015-06-17 7:16 ` Hans de Goede
[not found] ` <55811EB2.4060302-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-06-18 18:37 ` Maxime Ripard
2015-06-18 18:37 ` Maxime Ripard
2015-06-18 20:16 ` Hans de Goede
2015-06-18 20:16 ` Hans de Goede
2015-06-14 18:16 ` Pantelis Antoniou
2015-06-14 18:16 ` Pantelis Antoniou
[not found] ` <85E62D2D-5387-433B-A944-7F2145459F08-OWPKS81ov/FWk0Htik3J/w@public.gmane.org>
2015-06-16 17:55 ` Maxime Ripard
2015-06-16 17:55 ` Maxime Ripard
2015-06-16 19:33 ` Pantelis Antoniou
2015-06-16 19:33 ` Pantelis Antoniou
[not found] ` <D4216F2D-0556-4849-B1DF-8E4D250006B4-OWPKS81ov/FWk0Htik3J/w@public.gmane.org>
2015-06-17 7:19 ` Hans de Goede
2015-06-17 7:19 ` Hans de Goede
[not found] ` <55811F94.3080608-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-06-17 7:26 ` Pantelis Antoniou
2015-06-17 7:26 ` Pantelis Antoniou
2015-06-17 7:16 ` Hans de Goede
2015-06-17 7:16 ` Hans de Goede
[not found] ` <55811ED9.9090503-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-06-18 17:52 ` Maxime Ripard
2015-06-18 17:52 ` Maxime Ripard
2015-05-30 20:43 ` [PATCH v2 0/6] Introduce Allwinner A33 support jonsmirl-Re5JQEeQqe8AvxtiuMwx3w
2015-05-30 20:43 ` [linux-sunxi] " jonsmirl at gmail.com
2015-06-02 7:43 ` Chen-Yu Tsai
2015-06-02 7:43 ` Chen-Yu Tsai
2016-06-13 19:10 ` ernestovm07
2016-06-13 19:10 ` ernestovm07 at gmail.com
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