diff options
| author | Vijaya Krishna Nivarthi <quic_vnivarth@quicinc.com> | 2022-12-16 20:38:13 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2022-12-28 09:56:11 +0300 |
| commit | 25e8ac233d24051e2c4ff64c34f60609b0988568 (patch) | |
| tree | 55f6c22434b3235d65059656e80c284cf30f7925 /drivers/dma/qcom | |
| parent | 1b929c02afd37871d5afb9d498426f83432e71c2 (diff) | |
| download | linux-25e8ac233d24051e2c4ff64c34f60609b0988568.tar.xz | |
dmaengine: qcom: gpi: Set link_rx bit on GO TRE for rx operation
Rx operation on SPI GSI DMA is currently not working.
As per GSI spec, link_rx bit is to be set on GO TRE on tx
channel whenever there is going to be a DMA TRE on rx
channel. This is currently set for duplex operation only.
Set the bit for rx operation as well.
This is part of changes required to bring up Rx.
Fixes: 94b8f0e58fa1 ("dmaengine: qcom: gpi: set chain and link flag for duplex")
Signed-off-by: Vijaya Krishna Nivarthi <quic_vnivarth@quicinc.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/1671212293-14767-1-git-send-email-quic_vnivarth@quicinc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/qcom')
| -rw-r--r-- | drivers/dma/qcom/gpi.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/dma/qcom/gpi.c b/drivers/dma/qcom/gpi.c index 061add832295..59a36cbf9b5f 100644 --- a/drivers/dma/qcom/gpi.c +++ b/drivers/dma/qcom/gpi.c @@ -1756,6 +1756,7 @@ static int gpi_create_spi_tre(struct gchan *chan, struct gpi_desc *desc, tre->dword[3] = u32_encode_bits(TRE_TYPE_GO, TRE_FLAGS_TYPE); if (spi->cmd == SPI_RX) { tre->dword[3] |= u32_encode_bits(1, TRE_FLAGS_IEOB); + tre->dword[3] |= u32_encode_bits(1, TRE_FLAGS_LINK); } else if (spi->cmd == SPI_TX) { tre->dword[3] |= u32_encode_bits(1, TRE_FLAGS_CHAIN); } else { /* SPI_DUPLEX */ |