Check the "spi-nor,ddr-quad-read-dummy" DT property to get the dummy cycles for DDR quad read.
Signed-off-by: Huang Shijie <[email protected]> --- 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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
