spi: cadence_qspi: Better debug information on the SPI clock rate

Show what the output clock rate actually is.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>

diff --git a/drivers/spi/cadence_qspi_apb.c b/drivers/spi/cadence_qspi_apb.c
index b5c664f..0a2963d 100644 (file)
--- a/drivers/spi/cadence_qspi_apb.c
+++ b/drivers/spi/cadence_qspi_apb.c
@@ -280,13 +280,13 @@ void cadence_qspi_apb_config_baudrate_div(void *reg_base,
         */
        div = DIV_ROUND_UP(ref_clk_hz, sclk_hz * 2) - 1;
 
-       debug("%s: ref_clk %dHz sclk %dHz Div 0x%x\n", __func__,
-             ref_clk_hz, sclk_hz, div);
-
        /* ensure the baud rate doesn't exceed the max value */
        if (div > CQSPI_REG_CONFIG_BAUD_MASK)
                div = CQSPI_REG_CONFIG_BAUD_MASK;
 
+       debug("%s: ref_clk %dHz sclk %dHz Div 0x%x, actual %dHz\n", __func__,
+             ref_clk_hz, sclk_hz, div, ref_clk_hz / (2 * (div + 1)));
+
        reg |= (div << CQSPI_REG_CONFIG_BAUD_LSB);
        writel(reg, reg_base + CQSPI_REG_CONFIG);