diff options
| -rw-r--r-- | drivers/spi/spi-fsl-espi.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c index 2635a33b8e98..4fbcc36fa891 100644 --- a/drivers/spi/spi-fsl-espi.c +++ b/drivers/spi/spi-fsl-espi.c @@ -314,13 +314,6 @@ static void fsl_espi_setup_transfer(struct spi_device *spi, if (pm > 15) { cs->hw_mode |= CSMODE_DIV16; pm = DIV_ROUND_UP(espi->spibrg, hz * 16 * 4) - 1; - - WARN_ONCE(pm > 15, - "%s: Requested speed is too low: %u Hz. Will use %u Hz instead.\n", - dev_name(&spi->dev), hz, - espi->spibrg / (4 * 16 * (15 + 1))); - if (pm > 15) - pm = 15; } cs->hw_mode |= CSMODE_PM(pm); @@ -460,9 +453,6 @@ static int fsl_espi_setup(struct spi_device *spi) u32 loop_mode; struct fsl_espi_cs *cs = spi_get_ctldata(spi); - if (!spi->max_speed_hz) - return -EINVAL; - if (!cs) { cs = kzalloc(sizeof(*cs), GFP_KERNEL); if (!cs) @@ -673,6 +663,9 @@ static int fsl_espi_probe(struct device *dev, struct resource *mem, ret = -EINVAL; goto err_probe; } + /* determined by clock divider fields DIV16/PM in register SPMODEx */ + master->min_speed_hz = DIV_ROUND_UP(espi->spibrg, 4 * 16 * 16); + master->max_speed_hz = DIV_ROUND_UP(espi->spibrg, 4); init_completion(&espi->done); |