]> git.karo-electronics.de Git - linux-beck.git/commit
ARM: dts: remove display power domain for exynos5420
authorRahul Sharma <rahul.sharma@samsung.com>
Tue, 15 Jul 2014 23:37:00 +0000 (08:37 +0900)
committerKukjin Kim <kgene.kim@samsung.com>
Tue, 15 Jul 2014 23:37:00 +0000 (08:37 +0900)
commitd51cad7df87119ab625ad8ba15eb3e8f9ea44fc9
tree99ad67f5ff0c8da39120b66fe3f1b075b65fe0cc
parent5a852743a495b8628ad6c848a74254ec8fcc9c27
ARM: dts: remove display power domain for exynos5420

Display domain is removed due to instability issues. Explaining
the problem below:

exynos_init_late triggers the pm_genpd_poweroff_unused which powers
off the unused power domains. This call hits before the trigger to
deferred probes.

DRM DP Panel defers the probe due to supply get failure. By the time,
deferred probe is scheduled again, Display Power Domain is powered
off by pm_genpd_poweroff_unused.

FIMD and DP drivers are accessing registers during Probe and Bind
callbacks. If display domain is enabled/disabled around register
accesses, display domain gets unstable and we are getting Power Domain
Disable fail notification. Increasing the Timeout also didn't help.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
arch/arm/boot/dts/exynos5420.dtsi