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author | 2015-10-07 17:14:40 +0800 | |
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committer | 2015-10-14 15:34:43 +0200 | |
commit | 41b3e0f067c26dd17837aa49fba13fcb5c6319e1 (patch) | |
tree | bd8bb92f2cc008f98efed6b4e89bac8db5ce8824 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
parent | soc: mediatek: add scpsys support active_wakeup (diff) | |
download | linux-dev-41b3e0f067c26dd17837aa49fba13fcb5c6319e1.tar.xz linux-dev-41b3e0f067c26dd17837aa49fba13fcb5c6319e1.zip |
soc: mediatek: Fix random hang up issue while kernel init
In kernel late init, it turns off all unused clocks, which
needs to access subsystem registers such as VENC and VENC_LT.
Accessing MT8173 VENC registers needs two top clocks, mm_sel and
venc_sel. Accessing VENC_LT registers needs mm_sel and venclt_sel.
So we need to keep these clocks on before accessing their registers.
This patch keeps venc_sel / venclt_sel clock on when
VENC / VENC_LT's power is on, to prevent system hang up while
accessing its registeres.
Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
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