refactor(ws2812): use DMA from device tree, not hardcoded#474
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refactor(ws2812): use DMA from device tree, not hardcoded#474
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Replace hardcoded DMA1 references in the WS2812 PWM STM32 driver with proper device tree-based DMA configuration using the Zephyr DMA API. - Replace LL DMA calls (LL_DMA_Init, LL_DMA_EnableChannel, etc.) with Zephyr DMA API (dma_config, dma_start, dma_stop) - Replace dma-channel/timer-number DTS properties with standard `dmas` phandle-array referencing the DMAMUX controller - Remove hardcoded DMA1 nodelabel, DMA IRQ base, DMAMUX request mapping table, and DMA channel-to-LL mapping tables - Remove DYNAMIC_INTERRUPTS Kconfig dependency (DMA driver handles IRQs) - Update pearl_main.dts to use dmas/dma-names properties with proper DMAMUX request IDs (TIM1_UP=0x2E, TIM20_UP=0x5A) Signed-off-by: Cyril Fougeray <[email protected]> Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>
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Replace hardcoded DMA1 references in the WS2812 PWM STM32 driver with proper device tree-based DMA configuration using the Zephyr DMA API.
dmasphandle-array referencing the DMAMUX controller