Hello Ian, On 01.11.21 18:40, Ian Abbott wrote: > Since commit 90bdf1e5d1e4 ("mci: dw_mmc: match against StarFive MMC > compatibles"), the dw_mmc driver requires a reset line called "reset". > The slightly earlier commit a3cf324593ea ("mci: dw_mmc: add optional > reset line") introduced the reset line support, but made it optional. Ouch. That doesn't look intended. Perhaps it's an artifact of a rebase. :/ I've sent out a partial revert. We can still apply this patch here to actually use the reset, but forcing platforms to specify a reset was not my intention as described in the first commit you referenced. > The device tree node for SoCFPGA's MMC device has the "resets" property, > but is missing the "reset-names" property, so MMC no longer works. > Barebox produces the error message: > > ERROR: dw_mmc ff704000.dwmmc0@xxxxxxxxxxx: probe failed: Invalid argument > > Add the missing "reset-names" property to the "&mmc" node in > "arch/arm/dts/socfpga.dtsi". It probably needs fixing in the upstream > Linux device tree sources too! > > Cc: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx> > Cc: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx> > Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx> > --- > arch/arm/dts/socfpga.dtsi | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/arch/arm/dts/socfpga.dtsi b/arch/arm/dts/socfpga.dtsi > index 7789c9d3b5..56dbf0b97d 100644 > --- a/arch/arm/dts/socfpga.dtsi > +++ b/arch/arm/dts/socfpga.dtsi > @@ -4,6 +4,10 @@ > }; > }; > > +&mmc { > + reset-names = "reset"; FWIW, this now adheres to the synopsys-dw-mshc-common binding: Reviewed-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx> > +}; > + > &watchdog0 { > resets = <&rst L4WD0_RESET>; > }; > -- 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 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox