diff options
Diffstat (limited to 'drivers/spi/spi-bcm2835aux.c')
| -rw-r--r-- | drivers/spi/spi-bcm2835aux.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/spi/spi-bcm2835aux.c b/drivers/spi/spi-bcm2835aux.c index a105db371417..99414319001a 100644 --- a/drivers/spi/spi-bcm2835aux.c +++ b/drivers/spi/spi-bcm2835aux.c @@ -403,8 +403,20 @@ static int bcm2835aux_spi_setup(struct spi_device *spi) /* sanity check for native cs */ if (spi->mode & SPI_NO_CS) return 0; - if (gpio_is_valid(spi->cs_gpio)) - return 0; + if (gpio_is_valid(spi->cs_gpio)) { + /* with gpio-cs set the GPIO to the correct level + * and as output (in case the dt has the gpio not configured + * as output but native cs) + */ + ret = gpio_direction_output(spi->cs_gpio, + (spi->mode & SPI_CS_HIGH) ? 0 : 1); + if (ret) + dev_err(&spi->dev, + "could not set gpio %i as output: %i\n", + spi->cs_gpio, ret); + + return ret; + } /* for dt-backwards compatibility: only support native on CS0 * known things not supported with broken native CS: |