diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/spi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/spi.h b/include/spi.h index 49bddd3cc3..5cf3389e91 100644 --- a/include/spi.h +++ b/include/spi.h @@ -88,6 +88,8 @@ int spi_transaction(const struct spi_device_t *spi_device, /* Similar to spi_transaction(), but hands over to DMA for reading response. * Must call spi_transaction_flush() after this to make sure the response is * received. + * Contrary the regular spi_transaction(), this function does NOT lock the + * SPI port, it's up to the caller to ensure proper mutual exclusion if needed. */ int spi_transaction_async(const struct spi_device_t *spi_device, const uint8_t *txdata, int txlen, |