[v2,0/3] DCMI set minimum cpufreq requirement

Message

Benjamin GAIGNARD June 3, 2020, 12:45 p.m. UTC

This series allow to STM32 camera interface (DCMI) to require a minimum
frequency to the CPUs before start streaming frames from the sensor.
The minimum frequency requirement is provided in the devide-tree node.

Setting a minimum frequency for the CPUs is needed to ensure a quick handling
of the interrupts between two sensor frames and avoid dropping half of them.

Benjamin Gaignard (3):
  dt-bindings: media: stm32-dcmi: Add DCMI min frequency property
  media: stm32-dcmi: Set minimum cpufreq requirement
  ARM: dts: stm32: Set DCMI frequency requirement for stm32mp15x

 .../devicetree/bindings/media/st,stm32-dcmi.yaml   |  8 ++
 arch/arm/boot/dts/stm32mp151.dtsi                  |  1 +
 drivers/media/platform/stm32/stm32-dcmi.c          | 90 ++++++++++++++++++++--
 3 files changed, 91 insertions(+), 8 deletions(-)