Hi Stefan, On Tue, Aug 23, 2016 at 10:54 PM, Chris Packham <judge.pack...@gmail.com> wrote: > On Tue, Aug 23, 2016 at 6:57 PM, Stefan Roese <s...@denx.de> wrote: >> Hi Chris, >> >> On 22.08.2016 02:38, Chris Packham wrote: >>> >>> From: Chris Packham <chris.pack...@alliedtelesis.co.nz> >>> >>> Add pin control settings for the NAND flash interface. This interface >>> is multiplexed with the device bus interface to the function is "dev" >>> not "nand" as one might expect. >>> >>> Signed-off-by: Chris Packham <chris.pack...@alliedtelesis.co.nz> >>> Cc: Luka Perkov <luka.per...@sartura.hr> >>> Cc: Dirk Eibach <eib...@gdsys.de> >>> --- >>> I don't think this is strictly necessary. A quick scan of boards that >>> use this family of processor all seem to set their MPP configurations >>> manually. >> >> >> Correct. Unfortunately we don't have a pin-ctrl driver for AXP / A38x >> in U-Boot yet. Such a driver would be very welcome though. ;) >> >>> Another issue is that technically on the Armada-385 there are 4 possible >>> CE pins. The board I'm looking at happens to use CE#0 (mpp25) but mpp26, >>> mpp27 and mpp6 are all potentially available. I guess if any boards >>> actually use them they can add them to their pin specification. At the >>> very least such boards would need to update the num-cs property anyway. >> >> >> How is this handled in the kernel? > > I haven't seen anything in the kernel yet that uses these chip selects. > >> I would very much like to see >> these changes in the dts in sync with the kernel as much as >> possible. Does the kernel also use "dev" instead of "nand" here? > > Yes I based this on > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/armada-39x.dtsi > I haven't got round to porting the kernel to my board so I imagine a > similar change will be required to armada-38x.dtsi in the kernel. >
I've sent a kernel patch for the armada-38x[1] so perhaps we should just drop this one and sync up if/when the kernel patch is accepted. [1] - http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/451027.html _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
