Not-Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
Not intended for upstream merge.
---
drivers/spi/spi-sh-msiof.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index ffa5efdf266a8276..72f80a088cddd395 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -272,6 +272,13 @@ static void sh_msiof_spi_set_clk_regs(struct sh_msiof_spi_priv *p,
k = min_t(int, k, ARRAY_SIZE(sh_msiof_spi_div_table) - 1);
scr = sh_msiof_spi_div_table[k].brdv | SCR_BRPS(brps);
+ dev_info(&p->pdev->dev, "clk at %lu Hz, brps = %u, brdv = %u%s\n",
+ parent_rate, brps, sh_msiof_spi_div_table[k].div,
+ ((sh_msiof_spi_div_table[k].div == 1 && brps > 2) ||
+ (brps > 32)) ? " INVALID!" : "");
+ dev_info(&p->pdev->dev, "wanted: %u Hz, actual: %lu Hz\n", spi_hz,
+ parent_rate / sh_msiof_spi_div_table[k].div / brps);
+
sh_msiof_write(p, TSCR, scr);
if (!(p->master->flags & SPI_MASTER_MUST_TX))
sh_msiof_write(p, RSCR, scr);
@@ -523,6 +530,16 @@ static int sh_msiof_spi_setup(struct spi_device *spi)
{
struct device_node *np = spi->master->dev.of_node;
struct sh_msiof_spi_priv *p = spi_master_get_devdata(spi->master);
+ u32 max_speed_hz, min_speed_hz;
+ unsigned long rate;
+
+ rate = clk_get_rate(p->clk);
+ max_speed_hz = rate;
+ min_speed_hz = rate / 1024;
+
+ dev_info(&p->pdev->dev,
+ "%s: master speed min %u max %u, device speed max = %u\n",
+ __func__, min_speed_hz, max_speed_hz, spi->max_speed_hz);
pm_runtime_get_sync(&p->pdev->dev);
--
1.9.1
