mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-03 15:47:36 +00:00
Code Issues Releases Wiki Activity

spi: imx: mx51-ecspi: Fix CONFIGREG delay comment

Browse source 
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: 6fd8b8503a ("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>
This commit is contained in:
Marek Vasut 2021-07-27 18:04:28 +02:00 committed by Mark Brown
parent 53ca18acbe
commit 36c2530ea9
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/spi/spi-imx.c
View file

@ -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);