Le 27/11/2019 à 11:02, Linus Walleij a écrit :
On Wed, Nov 27, 2019 at 10:34 AM Christophe Leroy
<christophe.leroy@xxxxxx> wrote:
In the meantime, I have tried changing "gpios" by "cs-gpios" in the
device tree, and I get the following warning:
(...)
[ 3.156654] WARNING: CPU: 0 PID: 1 at drivers/spi/spi-fsl-spi.c:716
fsl_spi_cs_control+0x64/0x7c
That should be this one:
if (WARN_ON_ONCE(!pinfo->immr_spi_cs))
return;
That happens when spi->cs_gpiod is NULL so the
chipselect isn't found and assigned, and the code
goes on to check the native CS and find that this isn't
available either and issues the warning.
That's in spi_add_device(), it is spi->cs_gpio and not spi->cs_gpiod
which is assigned, so spi->cs_gpiod remains NULL.
Christophe
That one is a bit puzzling because I know we have this
working with other "cs-gpios" consumer drivers working
just fine. :/
Yours,
Linus Walleij
