[U-Boot] [PATCH] spi: cadence_qspi: Ensure spi_calibration is run when sclk change

[Chin Liang See]

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 <clsee at altera.com>
Cc: Dinh Nguyen <dinguyen at opensource.altera.com>
Cc: Marek Vasut <marex at denx.de>
Cc: Stefan Roese <sr at denx.de>
Cc: Vikas Manocha <vikas.manocha at st.com>
Cc: Jagannadh Teki <jteki at openedev.com>
Cc: Pavel Machek <pavel at denx.de>
---
 drivers/spi/cadence_qspi.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
index 34a0f46..512bf2d 100644
--- a/drivers/spi/cadence_qspi.c
+++ b/drivers/spi/cadence_qspi.c
@@ -128,6 +128,9 @@ static int cadence_spi_set_speed(struct udevice *bus, uint hz)
 
 	cadence_spi_write_speed(bus, hz);
 
+	/* to ensure spi_calibration is run when SCLK frequency change */
+	plat->max_hz = 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)) {
-- 
1.7.7.4