From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Mon, 2 Mar 2020 02:19:58 +0200
Subject: spi: spi-fsl-dspi: Convert the instantiations that support it to DMA
Git-commit: 0feaf8f5afe057c397a440e76865b3d746dc9f7e
Patch-mainline: v5.7-rc1
References: bsc#1167260
The A-011218 eDMA/DSPI erratum affects most of the older Layerscape SoCs
with DSPI, and its workaround is a bit intrusive.
After this patch, there are no users of TCFQ mode that don't also
support XSPI (previously there was LS2085A).
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Message-Id: <20200302001958.11105-7-olteanv@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de>
---
drivers/spi/spi-fsl-dspi.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c
index c26a42f8ecbc..c357c3247232 100644
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -147,42 +147,49 @@ static const struct fsl_dspi_devtype_data devtype_data[] = {
.fifo_size = 4,
},
[LS1021A] = {
+ /* Has A-011218 DMA erratum */
.trans_mode = DSPI_TCFQ_MODE,
.max_clock_factor = 8,
.xspi_mode = true,
.fifo_size = 4,
},
[LS1012A] = {
+ /* Has A-011218 DMA erratum */
.trans_mode = DSPI_TCFQ_MODE,
.max_clock_factor = 8,
.xspi_mode = true,
.fifo_size = 16,
},
[LS1043A] = {
+ /* Has A-011218 DMA erratum */
.trans_mode = DSPI_TCFQ_MODE,
.max_clock_factor = 8,
.xspi_mode = true,
.fifo_size = 16,
},
[LS1046A] = {
+ /* Has A-011218 DMA erratum */
.trans_mode = DSPI_TCFQ_MODE,
.max_clock_factor = 8,
.xspi_mode = true,
.fifo_size = 16,
},
[LS2080A] = {
- .trans_mode = DSPI_TCFQ_MODE,
+ .trans_mode = DSPI_DMA_MODE,
+ .dma_bufsize = 8,
.max_clock_factor = 8,
.xspi_mode = true,
.fifo_size = 4,
},
[LS2085A] = {
- .trans_mode = DSPI_TCFQ_MODE,
+ .trans_mode = DSPI_DMA_MODE,
+ .dma_bufsize = 8,
.max_clock_factor = 8,
.fifo_size = 4,
},
[LX2160A] = {
- .trans_mode = DSPI_TCFQ_MODE,
+ .trans_mode = DSPI_DMA_MODE,
+ .dma_bufsize = 8,
.max_clock_factor = 8,
.xspi_mode = true,
.fifo_size = 4,
--
2.26.2