Messages in this thread |  | | From | Benjamin Gaignard <> | Subject | [PATCH v7 0/3] DCMI set minimum cpufreq requirement | Date | Wed, 1 Jul 2020 15:01:26 +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 7: - rebase on v5.8-rc3 - add reviewed and ack-by - fix test condition
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(-)
-- 2.15.0
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