From 1d0f199473bfb0398c23371622ddb29fe6ffa9ec Mon Sep 17 00:00:00 2001 From: mei Date: Mon, 3 Jun 2019 01:57:43 +0800 Subject: [PATCH] [sunxi-dev][h6] update opp table (#1394) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit use more powerfull 'cpuburn-a53' to do pressure test. power meter shows that 'cpuburn-a53' consumes much more power than 'stress -c 4' in the same condition. 930mV is not enough when running 'cpuburn-a53' meanwhile 950mV is the minimum voltage. When running 'cpuburn-a53' at 1.8G, h6 consumes lots of power and generate such amount of heat that an active cooling is necessary otherwise h6 gets overheat and system crashes. Even with active cooling and heatsink is in low temperature the junction temperature is still quit high that it reaches about 88~90 ℃ . Maybe the high thermal resistance of plastic package causes the problem. --- patch/kernel/sunxi-dev/0012-general-h6-new-opp-table.patch | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/patch/kernel/sunxi-dev/0012-general-h6-new-opp-table.patch b/patch/kernel/sunxi-dev/0012-general-h6-new-opp-table.patch index d44ac1e175..c895dd5e8c 100644 --- a/patch/kernel/sunxi-dev/0012-general-h6-new-opp-table.patch +++ b/patch/kernel/sunxi-dev/0012-general-h6-new-opp-table.patch @@ -56,14 +56,14 @@ index 141fd186b..5356ca6f6 100644 opp@1640000000 { opp-hz = /bits/ 64 <1640000000>; - opp-microvolt = <1160000 1160000 1160000>; -+ opp-microvolt = <910000 900000 920000>; ++ opp-microvolt = <910000 910000 920000>; clock-latency-ns = <244144>; /* 8 32k periods */ }; opp@1800000000 { opp-hz = /bits/ 64 <1800000000>; - opp-microvolt = <1160000 1160000 1160000>; -+ opp-microvolt = <930000 920000 940000>; ++ opp-microvolt = <950000 930000 950000>; clock-latency-ns = <244144>; /* 8 32k periods */ }; };