Messages in this thread | | | From | Benjamin Gaignard <> | Subject | [PATCH v3 0/3] DCMI set minimum cpufreq requirement | Date | Thu, 4 Jun 2020 14:39:29 +0200 |
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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.
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 | 187 ++++++++++++++++++++- 3 files changed, 188 insertions(+), 8 deletions(-)
-- 2.15.0
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