drivers: spi_mcux_lpspi: Fix DMA path on RT (92d02878) · Commits · Wenxi XU / zephyr

drivers/spi/spi_mcux_lpspi.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -483,7 +483,9 @@ static int transceive_dma(const struct device dev, const struct spi_config spi
		return ret;
		}

		#ifdef CONFIG_SOC_SERIES_MCXN
		base->TCR \|= LPSPI_TCR_CONT_MASK;
		#endif

		/* DMA is fast enough watermarks are not required */
		LPSPI_SetFifoWatermarks(base, 0U, 0U);
		@@ -500,9 +502,11 @@ static int transceive_dma(const struct device dev, const struct spi_config spi
		goto out;
		}

		#ifdef CONFIG_SOC_SERIES_MCXN
		while (!(LPSPI_GetStatusFlags(base) & kLPSPI_TxDataRequestFlag)) {
		/* wait until previous tx finished */
		}
		#endif

		/* Enable DMA Requests */
		LPSPI_EnableDMA(base, kLPSPI_TxDmaEnable \| kLPSPI_RxDmaEnable);
		@@ -513,6 +517,12 @@ static int transceive_dma(const struct device dev, const struct spi_config spi
		goto out;
		}

		#ifndef CONFIG_SOC_SERIES_MCXN
		while ((LPSPI_GetStatusFlags(base) & kLPSPI_ModuleBusyFlag)) {
		/* wait until module is idle */
		}
		#endif

		/* Disable DMA */
		LPSPI_DisableDMA(base, kLPSPI_TxDmaEnable \| kLPSPI_RxDmaEnable);