Armando Visconti 455829248f drivers/i2s_ll_stm32.c: (FIX) use dma_reload() to re-start the DMA ... Fix issue #14618. The I2S controller may generate an underrun/overrun error whenever the current sample in the Data Register (DR) has not been read/written yet when a new one needs to be sent/received. When the DMA operation is completed there is no much time to re-enable it for a new transfer. For example, in the case of a PDM microphone clocked at 2MHz we only have 8us to re-program the DMA to receive the new 16-bit sample. Doing a complete DMA configuration using the dma_config() API is an operation that is consuming too much time and driver is close to the limit. Instead, the dma_reload() routine only programs the minimum needed information (src, dst, len) for the new transfer in order to restart the DMA. Signed-off-by: Armando Visconti <armando.visconti@st.com>		2019-03-18 11:22:19 -05:00
..
CMakeLists.txt	…
Kconfig	…
Kconfig.cavs	…
Kconfig.sam_ssc	…
Kconfig.stm32	kconfig: drivers: i2s: Remove redundant deps.	2019-03-09 10:01:12 -05:00
i2s_cavs.c	drivers: i2s_cavs: replace cache operation macros	2019-02-20 07:33:11 -05:00
i2s_cavs.h	drivers: i2s_cavs: add transmit underrun status	2019-02-04 00:52:15 -05:00
i2s_common.c	all: Update reserved function names	2019-03-11 13:48:42 -04:00
i2s_handlers.c	all: Update reserved function names	2019-03-11 13:48:42 -04:00
i2s_ll_stm32.c	drivers/i2s_ll_stm32.c: (FIX) use dma_reload() to re-start the DMA	2019-03-18 11:22:19 -05:00
i2s_ll_stm32.h	…
i2s_sam_ssc.c	…