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feat(gdma): set burst size and return alignment constraint

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burst size can affect the buffer alignment
This commit is contained in:
morris
2024-04-25 18:16:29 +08:00
parent 23cfe0826b
commit 2f0c9b3584
27 changed files with 432 additions and 307 deletions
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11
components/esp_driver_spi/src/gpspi/spi_common.c
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@@ -243,12 +243,13 @@ static esp_err_t alloc_dma_chan(spi_host_device_t host_id, spi_dma_chan_t dma_ch
gdma_connect(dma_ctx->rx_dma_chan, GDMA_MAKE_TRIGGER(GDMA_TRIG_PERIPH_SPI, 3));
}
#endif
gdma_transfer_ability_t ability = {
.psram_trans_align = 0, // fall back to use the same size of the psram data cache line size
.sram_trans_align = 4,
// TODO: add support to allow SPI transfer PSRAM buffer
gdma_transfer_config_t trans_cfg = {
.max_data_burst_size = 16,
.access_ext_mem = false,
};
ESP_RETURN_ON_ERROR(gdma_set_transfer_ability(dma_ctx->tx_dma_chan, &ability), SPI_TAG, "set gdma tx transfer ability failed");
ESP_RETURN_ON_ERROR(gdma_set_transfer_ability(dma_ctx->rx_dma_chan, &ability), SPI_TAG, "set gdma rx transfer ability failed");
ESP_RETURN_ON_ERROR(gdma_config_transfer(dma_ctx->tx_dma_chan, &trans_cfg), SPI_TAG, "config gdma tx transfer failed");
ESP_RETURN_ON_ERROR(gdma_config_transfer(dma_ctx->rx_dma_chan, &trans_cfg), SPI_TAG, "config gdma rx transfer failed");
}
return ret;
}