Ensuring spi_calibration is run when there is a change of sclk
frequency. This will ensure the qspi flash access works for high
sclk frequency
Signed-off-by: Chin Liang See <cl...@altera.com>
Cc: Dinh Nguyen <dingu...@opensource.altera.com>
Cc: Dinh Nguyen <dinh.li...@gmail.com>
Cc: Marek Vasut <ma...@denx.de>
Cc: Stefan Roese <s...@denx.de>
Cc: Vikas Manocha <vikas.mano...@st.com>
Cc: Jagannadh Teki <jt...@openedev.com>
Cc: Pavel Machek <pa...@denx.de>
---
drivers/spi/cadence_qspi.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
index 34a0f46..300934e 100644
--- a/drivers/spi/cadence_qspi.c
+++ b/drivers/spi/cadence_qspi.c
@@ -37,7 +37,7 @@ static int cadence_spi_write_speed(struct udevice *bus, uint
hz)
}
/* Calibration sequence to determine the read data capture delay register */
-static int spi_calibration(struct udevice *bus)
+static int spi_calibration(struct udevice *bus, uint hz)
{
struct cadence_spi_platdata *plat = bus->platdata;
struct cadence_spi_priv *priv = dev_get_priv(bus);
@@ -64,7 +64,7 @@ static int spi_calibration(struct udevice *bus)
}
/* use back the intended clock and find low range */
- cadence_spi_write_speed(bus, plat->max_hz);
+ cadence_spi_write_speed(bus, hz);
for (i = 0; i < CQSPI_READ_CAPTURE_MAX_DELAY; i++) {
/* Disable QSPI */
cadence_qspi_apb_controller_disable(base);
@@ -111,7 +111,7 @@ static int spi_calibration(struct udevice *bus)
(range_hi + range_lo) / 2, range_lo, range_hi);
/* just to ensure we do once only when speed or chip select change */
- priv->qspi_calibrated_hz = plat->max_hz;
+ priv->qspi_calibrated_hz = hz;
priv->qspi_calibrated_cs = spi_chip_select(bus);
return 0;
@@ -131,7 +131,7 @@ static int cadence_spi_set_speed(struct udevice *bus, uint
hz)
/* Calibration required for different SCLK speed or chip select */
if (priv->qspi_calibrated_hz != plat->max_hz ||
priv->qspi_calibrated_cs != spi_chip_select(bus)) {
- err = spi_calibration(bus);
+ err = spi_calibration(bus, hz);
if (err)
return err;
}
--
1.7.7.4
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