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 Chanwoo Choi (7): PM / devfreq: event: Add new Exynos NoC probe driver PM / devfreq: exynos: Add the detailed correlation for Exynos5422 bus ARM: dts: Add NoC Probe dt node for Exynos542x SoC dt-bindings: clock: Add the clock id for ACLK clock of Exynos542x SoC clk: samsung: exynos542x: Add the clock id for ACLK ARM: dts: Add bus nodes using VDD_INT for Exynos542x SoC ARM: dts: Add support of Bus frequency using VDD_INT for exynos5422-odroidxu3 .../bindings/devfreq/event/exynos-nocp.txt | 86 +++++ .../devicetree/bindings/devfreq/exynos-bus.txt | 19 + arch/arm/boot/dts/exynos5420.dtsi | 407 +++++++++++++++++++++ arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi | 99 +++++ drivers/clk/samsung/clk-exynos5420.c | 85 +++-- drivers/devfreq/event/Kconfig | 8 + drivers/devfreq/event/Makefile | 2 + drivers/devfreq/event/exynos-nocp.c | 247 +++++++++++++ drivers/devfreq/event/exynos-nocp.h | 78 ++++ include/dt-bindings/clock/exynos5420.h | 24 +- 10 files changed, 1024 insertions(+), 31 deletions(-) create mode 100644 Documentation/devicetree/bindings/devfreq/event/exynos-nocp.txt create mode 100644 drivers/devfreq/event/exynos-nocp.c create mode 100644 drivers/devfreq/event/exynos-nocp.h -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
