diff options
| author |   Marek Vasut <marex@denx.de> | 2021-07-27 18:04:28 +0200 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2021-07-28 16:39:22 +0100 |
| commit | 36c2530ea963884eeb0097169f853fdc36f16ad7 (patch) | |
| tree | 61c6e1e997630d474460de7d75d23d3607ee81ca /drivers/spi | |
| parent | spi: imx: mx51-ecspi: Fix low-speed CONFIGREG delay calculation (diff) | |
| download | linux-dev-36c2530ea963884eeb0097169f853fdc36f16ad7.tar.xz linux-dev-36c2530ea963884eeb0097169f853fdc36f16ad7.zip | |
spi: imx: mx51-ecspi: Fix CONFIGREG delay comment
For (2 * 1000000) / min_speed_hz < 10 to be true in naturals with zero,
the min_speed_hz must be above 200000 (i.e. 200001 rounds down to 9, so
the condition triggers). Update the comment. No functional change.
Fixes: 6fd8b8503a0dc ("spi: spi-imx: Fix out-of-order CS/SCLK operation at low speeds")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Mark Brown <broonie@kernel.org>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20210727160428.7673-1-marex@denx.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-imx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 2872993550bd..fa68e9817929 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -593,7 +593,7 @@ static int mx51_ecspi_prepare_message(struct spi_imx_data *spi_imx, } delay = (2 * 1000000) / min_speed_hz; - if (likely(delay < 10)) /* SCLK is faster than 100 kHz */ + if (likely(delay < 10)) /* SCLK is faster than 200 kHz */ udelay(delay); else /* SCLK is _very_ slow */ usleep_range(delay, delay + 10); |