On 22.01.19 17:37, Alexander Graf wrote: > > > On 22.01.19 17:28, Alexander Graf wrote: >> >> >> On 22.01.19 17:17, Oskari Lemmelä wrote: >>> Hi, >>> >>> On 22.1.2019 16.54, Alexander Graf wrote: >>>> >>>> On 05.01.19 18:52, Oskari Lemmela wrote: >>>>> Minimal changes to support sun6i based Allwinner SOCs >>>>> Changes are based to SPL driver arch/arm/mach-sunxi/spl_spi_sunxi.c >>>>> >>>>> Signed-off-by: Oskari Lemmela <osk...@lemmela.net> >>>> I just tried to see if this patch gives me "sf" access on a SoPine >>>> system. Unfortunately, it seems as if the sun4i_spi driver doesn't even >>>> get probed? >>>> >>>> How did you manage to actually make use of this driver? >>>> >>>> >>>> Alex >>> >>> You need to add spi0 alias to dts and enable needed drivers to defconfig. >>> You can take look from Jagan's patch [1]. >>> >>> I didn't include those changes as Maxime already commented [2] >>> that Kconfig depends/defaults should be modified first. >> >> I don't see any relation between the dts change and the Kconfig >> dependency issues? >> >> But thanks for the pointer, I'll give this patch a try. > > Ok, so I now get the SPI controller initialized, but it seems to only > returns zeros when trying to access the SPI flash device. > > In other words, it doesn't work for me :). But maybe I'm missing all the > other clk patches to actually get it working?
Ok, so turns out the problem is that you can't have eMMC and SPI both working. I don't quite know yet whether this is just a pinmux problem (so potentially software workaroundable) or if it's a hardware limitation (eMMC pulling a line required for SPI). But either way, without the eMMC module, things seem to work: Tested-by: Alexander Graf <ag...@suse.de> Alex _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
