xref: /openbmc/linux/Documentation/ABI/testing/sysfs-bus-iio-dma-buffer (revision c0ecca6604b80e438b032578634c6e133c7028f6)
1What:		/sys/bus/iio/devices/iio:deviceX/buffer/length_align_bytes
2KernelVersion:	5.4
3Contact:	linux-iio@vger.kernel.org
4Description:
5		DMA buffers tend to have a alignment requirement for the
6		buffers. If this alignment requirement is not met samples might
7		be dropped from the buffer.
8
9		This property reports the alignment requirements in bytes.
10		This means that the buffer size in bytes needs to be a integer
11		multiple of the number reported by this file.
12
13		The alignment requirements in number of sample sets will depend
14		on the enabled channels and the bytes per channel. This means
15		that the alignment requirement in samples sets might change
16		depending on which and how many channels are enabled. Whereas
17		the alignment requirement reported in bytes by this property
18		will remain static and does not depend on which channels are
19		enabled.
20