forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

HACK: OMAP: DSS2: add delay after enabling clocks

Browse source 
On omap4 the registers may not be accessible right after enabling the
clocks. At some point this will be handled by pm_runtime, but, for the
time begin, adding a small delay after clk_enable() should make things
work.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Tomi Valkeinen 2011-03-03 13:16:23 +02:00
parent f2988ab9f4
commit 85604b0a24
1 changed files with 8 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

8
drivers/video/omap2/dss/dss.c
View file

@ -850,6 +850,14 @@ void dss_clk_enable(enum dss_clock clks)
dss_clk_enable_no_ctx(clks); dss_clk_enable_no_ctx(clks);
/*
* HACK: On omap4 the registers may not be accessible right after
* enabling the clocks. At some point this will be handled by
* pm_runtime, but for the time begin this should make things work.
*/
if (cpu_is_omap44xx() && check_ctx)
udelay(10);
if (check_ctx && cpu_is_omap34xx() && dss_need_ctx_restore()) if (check_ctx && cpu_is_omap34xx() && dss_need_ctx_restore())
restore_all_ctx(); restore_all_ctx();
} }