Check the "spi-nor,ddr-quad-read-dummy" DT property to get the
dummy cycles for DDR quad read.
Signed-off-by: Huang Shijie <b32955@xxxxxxxxxxxxx>
---
drivers/mtd/spi-nor/fsl-quadspi.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index 8d659a2..15bdeb9 100644
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -883,6 +883,7 @@ static int fsl_qspi_probe(struct platform_device *pdev)
for_each_available_child_of_node(dev->of_node, np) {
const struct spi_device_id *id;
char modalias[40];
+ u32 dummy = 0;
/* skip the holes */
if (!has_second_chip)
@@ -918,6 +919,12 @@ static int fsl_qspi_probe(struct platform_device *pdev)
if (ret < 0)
goto map_failed;
+ /* Set the dummy cycles for the DDR Quad Read */
+ ret = of_property_read_u32(np, "spi-nor,ddr-quad-read-dummy",
+ &dummy);
+ if (!ret && dummy > 0 && dummy < 8)
+ nor->read_dummy = dummy;
+
/* set the chip address for READID */
fsl_qspi_set_base_addr(q, nor);
--
1.7.2.rc3
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