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xtensa/esp32: Fix MISO/MOSI data length field configuration

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Both fields were being configured with the total number of remaining
bytes instead of the number of bytes actually bound to DMA descriptors.
This commit is contained in:
Gustavo Henrique Nihei 2021-03-29 09:35:52 -03:00 committed by Xiang Xiao
parent b4dbae1b10
commit 5e8eb420b7
1 changed files with 2 additions and 2 deletions
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4
arch/xtensa/src/esp32/esp32_spi.c
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@ -908,7 +908,7 @@ static void esp32_spi_dma_exchange(FAR struct esp32_spi_priv_s *priv,
SPI_OUTLINK_ADDR_V;
esp32_spi_set_reg(priv, SPI_DMA_OUT_LINK_OFFSET,
regval | SPI_OUTLINK_START_M);
esp32_spi_set_reg(priv, SPI_MOSI_DLEN_OFFSET, bytes * 8 - 1);
esp32_spi_set_reg(priv, SPI_MOSI_DLEN_OFFSET, n * 8 - 1);
esp32_spi_set_regbits(priv, SPI_USER_OFFSET, SPI_USR_MOSI_M);
tp += n;
@ -922,7 +922,7 @@ static void esp32_spi_dma_exchange(FAR struct esp32_spi_priv_s *priv,
SPI_INLINK_ADDR_V;
esp32_spi_set_reg(priv, SPI_DMA_IN_LINK_OFFSET,
regval | SPI_INLINK_START_M);
esp32_spi_set_reg(priv, SPI_MISO_DLEN_OFFSET, bytes * 8 - 1);
esp32_spi_set_reg(priv, SPI_MISO_DLEN_OFFSET, n * 8 - 1);
esp32_spi_set_regbits(priv, SPI_USER_OFFSET, SPI_USR_MISO_M);
rp += n;