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arch/xtensa/esp32s3: Deinitialize ESP32-S3 QSPI GDMA engine.

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Correctly releasing channels after using QSPI is crucial
to prevent issues caused by multiple requests that may lead
to DMA channel resource conflicts.
This commit is contained in:
nuttxs 2024-07-17 15:04:24 +08:00 committed by Xiang Xiao
parent 7780cfc5a6
commit de3737cd90
1 changed files with 31 additions and 2 deletions
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33
arch/xtensa/src/esp32s3/esp32s3_qspi.c
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@ -1207,6 +1207,36 @@ void esp32s3_qspi_init_dma(struct esp32s3_qspi_priv_s *priv)
putreg32((SPI_SLV_RX_SEG_TRANS_CLR_EN_M | SPI_SLV_TX_SEG_TRANS_CLR_EN_M),
SPI_DMA_CONF_REG(config->id));
}
/****************************************************************************
* Name: esp32s3_qspi_dma_deinit
*
* Description:
* Deinitialize ESP32-S3 QSPI GDMA engine.
*
* Input Parameters:
* dev - Device-specific state data
*
* Returned Value:
* None.
*
****************************************************************************/
void esp32s3_qspi_dma_deinit(struct esp32s3_qspi_priv_s *priv)
{
/* Release a DMA channel from peripheral */
esp32s3_dma_release(priv->dma_channel);
/* Deinitialize DMA controller */
esp32s3_dma_deinit();
/* Disable DMA clock for the SPI peripheral */
modifyreg32(SYSTEM_PERIP_CLK_EN0_REG, priv->config->dma_clk_bit, 0);
}
#endif
/****************************************************************************
@ -1391,8 +1421,7 @@ static void esp32s3_qspi_deinit(struct esp32s3_qspi_priv_s *priv)
const struct esp32s3_qspi_config_s *config = priv->config;
#ifdef CONFIG_ESP32S3_SPI_DMA
modifyreg32(SYSTEM_PERIP_RST_EN0_REG, 0, config->dma_rst_bit);
modifyreg32(SYSTEM_PERIP_CLK_EN0_REG, config->dma_clk_bit, 0);
esp32s3_qspi_dma_deinit(priv);
#endif
modifyreg32(SYSTEM_PERIP_RST_EN0_REG, 0, config->rst_bit);