On 7/1/20 2:59 PM, Benjamin Gaignard wrote: > 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. Please forget this version, the incoming version 7 should have fix your remarks. Sorry, Benjamin > version 6: > - come back to version 4 and follow Valentin's suggestions about notifier > > version 5: > - add a mutex to protect dcmi_irq_notifier_notify() > - register notifier a probe time > > version 4: > - simplify irq affinity handling by using only dcmi_irq_notifier_notify() > > version 3: > - add a cpumask field to track boosted CPUs > - add irq_affinity_notify callback > - protect cpumask field with a mutex > > 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 | 138 +++++++++++++++++++-- > 3 files changed, 139 insertions(+), 8 deletions(-) >
