From: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Geert Uytterhoeven <geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org>
Cc: Tomi Valkeinen <tomi.valkeinen-l0cyMroinI0@public.gmane.org>,
Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
Jean-Christophe Plagniol-Villard
<plagnioj-sclMFOaUSTBWk0Htik3J/w@public.gmane.org>,
Grant Likely
<grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Luc Verhaegen <libv-AgBVmzD5pcezQB+pC5nmwQ@public.gmane.org>,
Maxime Ripard
<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Mike Turquette
<mturquette-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
David Herrmann
<dh.herrmann-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Linux Fbdev development list
<linux-fbdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
devicetree <devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
linux-sunxi <linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
Subject: Re: [PATCH 1/4] dt-bindings: simplefb: Specify node location and handoff related properties
Date: Thu, 13 Nov 2014 09:43:24 +0100 [thread overview]
Message-ID: <54646F2C.1000707@redhat.com> (raw)
In-Reply-To: <CAMuHMdU4YTwyMrD5U1i3DYy=cvpocmzXqajySUfgBKVRhcAJVw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
Hi,
On 11/13/2014 09:38 AM, Geert Uytterhoeven wrote:
> On Wed, Nov 12, 2014 at 11:08 PM, Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
>> Since simplefb nodes do not relate directly to hw typically they have been
>> placed in the root of the devicetree. As the represent runtime information
>> having them as sub-nodes of /chosen is more logical, specify this.
>>
>> Also specify when to set the chosen stdout-path property to a simplefb node.
>>
>> For reliable handover to a hardware specific driver, that driver needs to
>> know which simplefb to unregister when taking over, specify how the hw driver
>> can find the matching simplefb node.
>>
>> Last add some advice on how to fill and use simplefb nodes from a firmware
>> pov.
>>
>> Signed-off-by: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
>
> Acked-by: Geert Uytterhoeven <geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org>
Thanks.
>
>> ---
>> .../bindings/video/simple-framebuffer.txt | 37 +++++++++++++++++++++-
>> 1 file changed, 36 insertions(+), 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/video/simple-framebuffer.txt b/Documentation/devicetree/bindings/video/simple-framebuffer.txt
>> index 8f35718..95fe284 100644
>> --- a/Documentation/devicetree/bindings/video/simple-framebuffer.txt
>> +++ b/Documentation/devicetree/bindings/video/simple-framebuffer.txt
>> @@ -4,6 +4,26 @@ A simple frame-buffer describes a frame-buffer setup by firmware or
>> the bootloader, with the assumption that the display hardware has already
>> been set up to scan out from the memory pointed to by the reg property.
>>
>> +Since simplefb nodes represent runtime information they must be sub-nodes of
>> +the chosen node (*). The primary display node must be named framebuffer0,
>> +additional nodes must be called framebuffer1, etc.
>> +
>> +If a simplefb node represents the preferred console for user interaction,
>> +then the chosen node's stdout-path property must point to it.
>
> You may want to add an stdout-path property to the example.
That is a good idea, done for v2.
Regards,
Hans
prev parent reply other threads:[~2014-11-13 8:43 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-12 22:08 [PATCH 1/4] dt-bindings: simplefb: Specify node location and handoff related properties Hans de Goede
[not found] ` <1415830124-28787-1-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-11-12 22:08 ` [PATCH 2/4] simplefb: Add support for enumerating simplefb dt nodes in /chosen Hans de Goede
[not found] ` <1415830124-28787-2-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-11-12 23:39 ` Julian Calaby
[not found] ` <CAGRGNgW_Q6oghpe5Mw-8aYPVVj1YZ6R3iaqOQzCE9dSD1nYSyA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-13 8:27 ` Hans de Goede
[not found] ` <54646B5B.1070604-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-11-13 8:34 ` Geert Uytterhoeven
[not found] ` <CAMuHMdVSfYyHc52Tdu_wzb6ZYPzeZtOzweUwADHxiJLypuBQNw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-13 8:40 ` Hans de Goede
[not found] ` <54646E83.9070704-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-11-13 8:47 ` Julian Calaby
2014-11-13 10:24 ` Grant Likely
2014-11-13 8:15 ` Geert Uytterhoeven
[not found] ` <CAMuHMdWdtxcmDc7fDbQHfVa425sR3MGwJ70cRnh2Wb50iAo2CQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-13 8:16 ` Geert Uytterhoeven
[not found] ` <CAMuHMdWCF5+N3h890fUpPjAYWBEf6HcFEacz0j5GsLwNoF1Smw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-13 8:28 ` Hans de Goede
2014-11-12 22:08 ` [PATCH 3/4] simplefb: Change simplefb_init from module_init to fs_initcall Hans de Goede
[not found] ` <1415830124-28787-3-git-send-email-hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-11-13 8:52 ` Maxime Ripard
2014-11-13 8:58 ` Geert Uytterhoeven
[not found] ` <CAMuHMdXZ4V4GHvyDLOP8FYvPuGArc5G0aO6NCE9FKHT24YRGPg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-18 10:19 ` Thierry Reding
2014-11-18 11:01 ` Hans de Goede
[not found] ` <546B26F4.50302-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-11-18 11:21 ` Thierry Reding
2014-11-18 11:46 ` Hans de Goede
[not found] ` <546B31A7.9020804-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-11-18 12:44 ` Hans de Goede
[not found] ` <546B3F3C.6050202-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-11-18 15:16 ` Thierry Reding
2014-11-18 15:28 ` Maxime Ripard
2014-11-13 9:24 ` Hans de Goede
[not found] ` <546478B5.2040002-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-11-13 10:29 ` Grant Likely
[not found] ` <CACxGe6u8B854PEWw8XzwhyX8joMWwOsHOOXtmBmC1TgCGjGtdg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-13 10:31 ` Grant Likely
[not found] ` <CACxGe6sYD-Ow2wcwAKuXpR3A9VZozo2sgz=eEcWXi5ayKd2jWQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-13 12:01 ` Hans de Goede
2014-11-13 10:42 ` Maxime Ripard
2014-11-13 16:13 ` Stefan Monnier
[not found] ` <jwvy4rf2i7h.fsf-monnier+gmane.comp.hardware.netbook.arm.sunxi-mXXj517/zsQ@public.gmane.org>
2014-11-13 19:04 ` Hans de Goede
2014-11-12 22:08 ` [PATCH 4/4] fbcon: Change fbcon_init " Hans de Goede
2014-11-13 8:38 ` [PATCH 1/4] dt-bindings: simplefb: Specify node location and handoff related properties Geert Uytterhoeven
[not found] ` <CAMuHMdU4YTwyMrD5U1i3DYy=cvpocmzXqajySUfgBKVRhcAJVw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-13 8:43 ` Hans de Goede [this message]
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