On Fri, Jul 3, 2026 at 3:42 PM r00tnomade <[email protected]> wrote: > > Hey team, > > I just put together a patch to fix that annoying "spi-rx-bus-width 0 not > supported" warning we keep seeing on every boot for the Flipper One. > > Turns out the Device Tree binding explicitly says a value of 0 means the line > isn't wired up (like a write-only display with MISO left disconnected). > However, spi_child_post_bind() was only looking for 1, 2, 4, or 8, so it > threw a warning even though our DT is completely correct. > > What I changed: > > Added the SPI_NO_RX and SPI_NO_TX flags to include/spi.h (matching Linux's > naming convention). > > Handled the 0 case explicitly in drivers/spi/spi-uclass.c so it applies those > flags instead of triggering the warning. > > This should finally clear up the boot logs and close out issue #33. Let me > know if it looks good to merge!
Hi Sami, Looks like your patch body didn't get through. Would you mind resending in plaintext using b4 or git send-email? Please also see https://source.denx.de/u-boot/u-boot/-/blob/master/doc/develop/process.rst?ref_type=heads Best regards, Alexey
