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H A D | mt8173.dtsi | 7fcef92d Thu Jan 12 20:30:05 CST 2017 Daniel Kurtz <djkurtz@chromium.org> arm64: dts: mt8173: Fix cpu_thermal cooling-maps contributions
According to [0], the contribution field for each cooling-device express their relative power efficiency. Higher weights express higher power efficiency. Weighting is relative such that if each cooling device has a weight of 1 they are considered equal. This is particularly useful in heterogeneous systems where two cooling devices may perform the same kind of compute, but with different efficiency.
[0] Documentation/thermal/power_allocator.txt
According to Mediatek IC designer, the power efficiency ratio between the LITTLE core cluster (cooling-device cpu0) and big core cluster (cooling-device cpu1) is around 3:1 (3072:1024).
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com> 7fcef92d Thu Jan 12 20:30:05 CST 2017 Daniel Kurtz <djkurtz@chromium.org> arm64: dts: mt8173: Fix cpu_thermal cooling-maps contributions According to [0], the contribution field for each cooling-device express their relative power efficiency. Higher weights express higher power efficiency. Weighting is relative such that if each cooling device has a weight of 1 they are considered equal. This is particularly useful in heterogeneous systems where two cooling devices may perform the same kind of compute, but with different efficiency. [0] Documentation/thermal/power_allocator.txt According to Mediatek IC designer, the power efficiency ratio between the LITTLE core cluster (cooling-device cpu0) and big core cluster (cooling-device cpu1) is around 3:1 (3072:1024). Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
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