Hi! On Wed, Aug 08, 2018 at 06:36:56PM +0800, Icenowy Zheng wrote: > 在 2018-07-26四的 14:41 +0200，Maxime Ripard写道： > > On Wed, Jul 25, 2018 at 12:36:55AM +0800, Icenowy Zheng wrote: > > > Banana Pi designs the BPi M2 Berry board to be software compatible > > > with > > > BPi M2 Ultra, > > > > Do you have a reference for this? > > > > > so it's based on M2 Ultra with some function cuts, including: > > > > > > - 2048MiB DRAM -> 1024MiB (this should be proceed by the > > > bootloader); > > > - dropped a LED; > > > - dropped eMMC; > > > - dropped USB2 and connect USB1 to a 4-port HUB. > > > > Is it the exhaustive list? > > I have asked Mikey from Sinovoip, and he has agreed this. > > Here's a list provided by him, which covers some things I forgot: > - 2GiB -> 1GiB > - no eMMC > - no onboard microphone > - no IR > - no charging (and power jack to USB) > - USB change > - one less LED > > Should I add this to the device tree's comment? Not really, because... > > > > I'm a bit reluctant to merge that kind of patches usually, since that > > would also imply that each time someone will commit something to the > > M2-Ultra, it would automatically apply to the M2-Berry, without any > > easy way to tell and / or test. ... this still applies. Maxime -- Maxime Ripard, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com
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