spi: cadence-qspi: Fix programming ospi flash speed
When the requested flash speed is 0, the baudrate division for the
requested speed causing drop in the performance. So set the ospi flash
to operate at max frequency when requested speed is zero.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220512100535.16364-6-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
index 5fb4d2f..907f5da 100644
--- a/drivers/spi/cadence_qspi.c
+++ b/drivers/spi/cadence_qspi.c
@@ -151,7 +151,7 @@
struct cadence_spi_priv *priv = dev_get_priv(bus);
int err;
- if (hz > plat->max_hz)
+ if (!hz || hz > plat->max_hz)
hz = plat->max_hz;
/* Disable QSPI */