On 24.01.23 21:01, Michael Grzeschik wrote: > There are in sum 952 dwords available for g-rx-fifo-size, > g-np-tx-fifo-size and the eight entries of g-tx-fifo-size. For high > speed endpoints the maximal packet size is 512 (for full speed it's 64) > bytes. So a tx-fifo-size of more than 128 (dwords) isn't sensible. There is no driver support for this binding, so this patch achieves nothing. > > So instead of one (too) big and several small fifos, use two big fifos > and to better use the remaining available space increase one of the > small fifos. > > This patch is already discussed for the mainline kernel. > > https://lore.kernel.org/linux-arm-kernel/20230112112013.1086787-1-u.kleine-koenig@xxxxxxxxxxxxxx/ > > Until this is fix has reached the synced kernel dts tree in barebox we > fix this locally. > > Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx> > --- > v1 -> v2: - added this patch to solve the fifo issue on stm32 dwc2 when loading fastboot > > arch/arm/dts/stm32mp151.dtsi | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/arch/arm/dts/stm32mp151.dtsi b/arch/arm/dts/stm32mp151.dtsi > index d3e924dc00..602bcd60b2 100644 > --- a/arch/arm/dts/stm32mp151.dtsi > +++ b/arch/arm/dts/stm32mp151.dtsi > @@ -52,3 +52,7 @@ > barebox,mode-serial = <0xFF>; > }; > }; > + > +&usbotg_hs { > + g-tx-fifo-size = <128 128 16 16 16 16 16 16>; > +}; -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
