diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2017-07-27 18:49:33 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-07-28 15:33:18 +0300 |
| commit | d35f2dc9a2a84f4985d8b16b47040fd6291788ad (patch) | |
| tree | f3b69e50dd090bbe8f8e6f8077a8e9958c4c4b1d /drivers/spi/spi-pxa2xx.c | |
| parent | 6ac5a435ae6739c06ebbf79939e86e721b88a90f (diff) | |
| download | linux-d35f2dc9a2a84f4985d8b16b47040fd6291788ad.tar.xz | |
spi: pxa2xx: Don't touch CS pin until we have a transfer pending
GPIO descriptors, when being requested, may configure pin at the same
time. In case of SPI chip select we shouldn't do any assumptions of the
state of pin since we don't know yet what chip is connected there and if
it uses high or low active state. So, leave the state of pin as is until
transfer will start.
Fixes: 99f499cd6504 ("spi: pxa2xx: Add support for GPIO descriptor chip selects")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westeberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-pxa2xx.c')
| -rw-r--r-- | drivers/spi/spi-pxa2xx.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 38d053682892..6e5af88b7c6f 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1769,8 +1769,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) for (i = 0; i < master->num_chipselect; i++) { struct gpio_desc *gpiod; - gpiod = devm_gpiod_get_index(dev, "cs", i, - GPIOD_OUT_HIGH); + gpiod = devm_gpiod_get_index(dev, "cs", i, GPIOD_ASIS); if (IS_ERR(gpiod)) { /* Means use native chip select */ if (PTR_ERR(gpiod) == -ENOENT) |