diff options
| -rw-r--r-- | chip/stm32/spi.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/chip/stm32/spi.c b/chip/stm32/spi.c index 7873fe7772..057827cc7a 100644 --- a/chip/stm32/spi.c +++ b/chip/stm32/spi.c @@ -41,11 +41,17 @@ static const struct dma_option dma_tx_option = { STM32_DMAC_SPI1_TX, (void *)&SPI_TXDR, STM32_DMA_CCR_MSIZE_8_BIT | STM32_DMA_CCR_PSIZE_8_BIT +#ifdef CHIP_FAMILY_STM32F4 + | STM32_DMA_CCR_CHANNEL(STM32_SPI1_TX_REQ_CH) +#endif }; static const struct dma_option dma_rx_option = { STM32_DMAC_SPI1_RX, (void *)&SPI_RXDR, STM32_DMA_CCR_MSIZE_8_BIT | STM32_DMA_CCR_PSIZE_8_BIT +#ifdef CHIP_FAMILY_STM32F4 + | STM32_DMA_CCR_CHANNEL(STM32_SPI1_RX_REQ_CH) +#endif }; /* @@ -667,7 +673,12 @@ static void spi_init(void) /* Delay 1 APB clock cycle after the clock is enabled */ clock_wait_bus_cycles(BUS_APB, 1); - /* Select the right DMA request for the variants using it */ + /* + * Select the right DMA request for the variants using it. + * This is not required for STM32F4 since the channel (aka request) is + * set directly in the respective dma_option. In fact, it would be + * overridden in dma-stm32f4::prepare_stream(). + */ #ifdef CHIP_FAMILY_STM32L4 dma_select_channel(STM32_DMAC_SPI1_TX, 1); dma_select_channel(STM32_DMAC_SPI1_RX, 1); |