diff options
| author | Robert Marko <robert.marko@sartura.hr> | 2022-10-06 22:48:19 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-10-17 14:46:59 +0300 |
| commit | b40af6183b685b0cf7870987b858de0d48db9ea0 (patch) | |
| tree | 8df886e47133b3c7780c793d6ccc984fc21ae2d2 /drivers/spi | |
| parent | 6a43cd02ddbc597dc9a1f82c1e433f871a2f6f06 (diff) | |
| download | linux-b40af6183b685b0cf7870987b858de0d48db9ea0.tar.xz | |
spi: qup: support using GPIO as chip select line
Most of the device with QUP SPI adapter are actually using GPIO-s for
chip select.
However, this stopped working after ("spi: Retire legacy GPIO handling")
as it introduced a check on ->use_gpio_descriptors flag and since spi-qup
driver does not set the flag it meant that all of boards using GPIO-s and
with QUP adapter SPI devices stopped working.
So, to enable using GPIO-s again set ->use_gpio_descriptors to true and
populate ->max_native_cs.
Fixes: f48dc6b96649 ("spi: Retire legacy GPIO handling")
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Cc: luka.perkov@sartura.hr
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20221006194819.1536932-1-robert.marko@sartura.hr
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-qup.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c index 7d89510dc3f0..678dc51ef017 100644 --- a/drivers/spi/spi-qup.c +++ b/drivers/spi/spi-qup.c @@ -1057,6 +1057,8 @@ static int spi_qup_probe(struct platform_device *pdev) else master->num_chipselect = num_cs; + master->use_gpio_descriptors = true; + master->max_native_cs = SPI_NUM_CHIPSELECTS; master->bus_num = pdev->id; master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP; master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32); |