lkml.org 
[lkml]   [2020]   [Mar]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 6/6] spi: spi-fsl-dspi: Convert the instantiations that support it to DMA
Date
From: Vladimir Oltean <vladimir.oltean@nxp.com>

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>
---
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,
--
2.17.1
\
 
 \ /
  Last update: 2020-03-02 01:21    [W:0.110 / U:1.860 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site