Messages in this thread | | | Date | Thu, 21 Jan 2021 16:14:52 +0100 | From | Michael Walle <> | Subject | Re: [PATCH 0/3] add Ebang EBAZ4205 support |
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Am 2021-01-21 14:16, schrieb Michal Simek: > On 1/21/21 11:41 AM, Michael Walle wrote: >> Am 2021-01-21 11:23, schrieb Michal Simek: >>>>> Back to your case. Board is cheap which is not all the time case >>>>> for >>>>> any >>>>> xilinx board but you have only uart, sd and partially described >>>>> ethernet >>>>> which doesn't work without PL. Is it worth to have this described? >>>> >>>> I got your point. But it is at least a jump start for the users if >>>> that >>>> board boots out of the box. And yes, its unfortunate, that ethernet >>>> just works if the PL is configured. This is already done by the >>>> bootloader, because there I do have the same problem. >>> >>> Zynq/ZynqMP boards can use U-Boot SPL. "Advantage" of this solution >>> especially for Zynq is that in u-boot there is open a way for adding >>> ps7_init file which is determined by device tree name. >>> I think it would make sense to add these DTs and also ps7_init to >>> U-Boot >>> project and wire it up with zynq_virt platform and then you can boot >>> Linux with using U-Boot's DT pointed by $fdtcontroladdr. >>> Then you will get support from scratch to be able to boot. >> >> I already have patches for u-boot (using SPL). But my impression was >> that linux is the master for the device trees. Esp. if there are some >> problems with the board its often useful to have an in-tree device >> tree. >> >> What is the difference between this board and the other zynq boards >> in the kernel? >> >> In any case, please make this decision now: will you accept this >> device tree or not? > > If you promise to regularly test it I am fine with it.
I might even integrate it into our lava lab.
-michael
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