drm/sun4i: Enable the output on the pins (tcon0)

Browse source

I noticed that with 4.16-rc1 LVDS output on A83T based TBS A711 tablet doesn't
work (there's output but it's garbled). I compared some older patches for LVDS
support with the mainlined ones and this change is missing from mainline Linux.

I don't know what the register does exactly and the harcoded register value
doesn't inspire much confidence that it will work in a general case, so I'm
sending this RFC.

This patch fixes the issue on A83T.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180222161217.23904-1-megous@megous.com

...

This commit is contained in:

Ondrej Jirman 2018-02-22 17:12:17 +01:00 • committed by Maxime Ripard

parent c20bb155c2

commit 80b79e31c4

No known key found for this signature in database

GPG key ID: D2B4C094214DAF74

1 changed files with 3 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

drivers/gpu/drm/sun4i/sun4i_tcon.c

View file