Dear all, On 2016년 04월 08일 14:00, Chanwoo Choi wrote: > This patchset support the AMBA bus frequency scaling on Exynos5422-based > Odroid-XU3 board. But, this series only support the bus frequency scaling > for INT (Internal) block using VDD_INT power line. > > Also, to support the bus frequency scaling for Exynos542x SoC, > Exynos542x SoC has the specific 'NoC (Network on Chip) Probe' device > to measure the transfered data traffic on NoC (Network on Chip) > instead of PPMU (Platform Performance Monitoring Unit). NoC Probe device > provide the utilization for INT block of Exynos542x SoC. > > The generic exynos-bus frequency driver uses the 'NoC Probe' devfreq-event > device (drivers/devfreq/event/exynos-nocp.c) without any modification. > Just add the phandle of 'NoC Probe' dt node to bus dt node. > > Depend on: > This patchset depends on patch[1] which support the generic exynos-bus > frequency driver. > > [1] https://lkml.org/lkml/2016/4/8/14 > - [PATCH v8 00/20] PM / devferq: Add generic exynos bus frequency driver and > new passive governor
The dependency of these patch-set is changed from patches[1] to patches[2]. Because patches[1] has the possible recursive locking issue. Patches[2] fix this issue. [2] http://www.spinics.net/lists/arm-kernel/msg495976.html - [PATCH v9 00/20] PM / devferq: Add generic exynos bus frequency driver and new passive governor [snip] Best Regards, Chanwoo Choi
