Hi Andy,
On Wed, Feb 9, 2022 at 2:48 PM Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> 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@xxxxxxxxxx> 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@xxxxxxxxxxxxxx
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
