From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: "Javier Martinez Canillas" <javierm@redhat.com>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
"Linux Fbdev development list" <linux-fbdev@vger.kernel.org>,
"Linux PWM List" <linux-pwm@vger.kernel.org>,
"David Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel.vetter@ffwll.ch>,
"Mark Brown" <broonie@kernel.org>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
"DRI Development" <dri-devel@lists.freedesktop.org>,
"Liam Girdwood" <lgirdwood@gmail.com>,
"Rob Herring" <robh+dt@kernel.org>,
"Noralf Trønnes" <noralf@tronnes.org>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Maxime Ripard" <maxime@cerno.tech>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Lee Jones" <lee.jones@linaro.org>,
"Sam Ravnborg" <sam@ravnborg.org>
Subject: Re: [PATCH v2 0/4] drm/tiny: Add driver for Solomon SSD1307 OLED displays
Date: Wed, 9 Feb 2022 15:27:22 +0100 [thread overview]
Message-ID: <CAMuHMdXQdL_Do8Hjay1egfmd9H05R7BjNeKfLGq67mU4bQNVZA@mail.gmail.com> (raw)
In-Reply-To: <YgPF1cBMsd9973Dx@smile.fi.intel.com>
Hi Andy,
On Wed, Feb 9, 2022 at 2:48 PM Andy Shevchenko
<andriy.shevchenko@linux.intel.com> wrote:
> On Tue, Feb 08, 2022 at 04:10:49PM +0100, Javier Martinez Canillas wrote:
> > On 2/8/22 15:19, Geert Uytterhoeven wrote:
> > > On Fri, Feb 4, 2022 at 2:43 PM Javier Martinez Canillas
> > > <javierm@redhat.com> wrote:
> > > - Kernel size increased by 349 KiB,
> > > - The "Memory:" line reports 412 KiB less memory,
> > > - On top of that, "free" shows ca. 92 KiB more memory in use after
> > > bootup.
>
> The memory consumption should really be taken seriously, because these kind of
> displays are for embedded platforms with limited amount of resources.
Thanks for your concern!
Looking at the options that are auto-enabled, a few stand out that
look like they're not needed on systems witch such small displays,
or on legacy systems predating DDC:
menuconfig DRM
tristate "Direct Rendering Manager (XFree86 4.1.0 and
higher DRI support)"
depends on (AGP || AGP=n) && !EMULATED_CMPXCHG && HAS_DMA
select DRM_NOMODESET
select DRM_PANEL_ORIENTATION_QUIRKS
select HDMI
Not everyone pays HDMI royalties ;-)
select FB_CMDLINE
select I2C
select I2C_ALGOBIT
I do need I2C, as it's the transport for my SSD1306 display, but not
everyone needs it.
select DMA_SHARED_BUFFER
select SYNC_FILE
# gallium uses SYS_kcmp for os_same_file_description() to de-duplicate
# device and dmabuf fd. Let's make sure that is available for our userspace.
select KCMP
And:
config DRM_BRIDGE
def_bool y
depends on DRM
help
Bridge registration and lookup framework.
config DRM_PANEL_BRIDGE
def_bool y
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
next prev parent reply other threads:[~2022-02-09 14:27 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-04 13:43 [PATCH v2 0/4] drm/tiny: Add driver for Solomon SSD1307 OLED displays Javier Martinez Canillas
2022-02-04 13:43 ` [PATCH v2 1/4] drm/format-helper: Add drm_fb_{xrgb8888,gray8}_to_mono_reversed() Javier Martinez Canillas
2022-02-04 15:52 ` Thomas Zimmermann
2022-02-04 16:00 ` Thomas Zimmermann
2022-02-04 19:31 ` Javier Martinez Canillas
2022-02-04 20:35 ` Thomas Zimmermann
2022-02-04 21:02 ` Ilia Mirkin
2022-02-07 12:44 ` [PATCH v2 1/4] drm/format-helper: Add drm_fb_{xrgb8888, gray8}_to_mono_reversed() Thomas Zimmermann
2022-02-04 13:43 ` [PATCH v2 2/4] drm/tiny: Add driver for Solomon SSD130X OLED displays Javier Martinez Canillas
2022-02-04 14:26 ` Andy Shevchenko
2022-02-04 19:19 ` Javier Martinez Canillas
2022-02-05 13:04 ` Andy Shevchenko
2022-02-05 17:40 ` Javier Martinez Canillas
2022-02-04 13:43 ` [PATCH v2 3/4] MAINTAINERS: Add entry for Solomon SSD130X OLED displays DRM driver Javier Martinez Canillas
2022-02-04 13:57 ` Andy Shevchenko
2022-02-04 14:12 ` Javier Martinez Canillas
2022-02-04 14:28 ` Andy Shevchenko
2022-02-04 14:33 ` Javier Martinez Canillas
2022-02-04 13:43 ` [PATCH v2 4/4] dt-bindings: display: ssd1307fb: Add myself as binding co-maintainer Javier Martinez Canillas
2022-02-09 22:14 ` Rob Herring
2022-02-04 14:31 ` [PATCH v2 0/4] drm/tiny: Add driver for Solomon SSD1307 OLED displays Geert Uytterhoeven
2022-02-04 14:37 ` Javier Martinez Canillas
2022-02-08 14:19 ` Geert Uytterhoeven
2022-02-08 15:10 ` Javier Martinez Canillas
2022-02-08 15:18 ` Mark Brown
2022-02-08 15:32 ` Javier Martinez Canillas
2022-02-08 15:23 ` Geert Uytterhoeven
2022-02-08 15:40 ` Javier Martinez Canillas
2022-02-08 17:19 ` Javier Martinez Canillas
2022-02-09 13:47 ` Andy Shevchenko
2022-02-09 14:27 ` Geert Uytterhoeven [this message]
2022-02-09 14:42 ` Javier Martinez Canillas
2022-02-09 15:32 ` Andy Shevchenko
2022-02-10 8:32 ` Maxime Ripard
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